When Trees Start Dying

When Trees Start Dying

Signs You Have a Diseased Tree

Do you notice any funky-looking growths on your trees? One of the signs you have a diseased tree, for instance, is the appearance of fungi– which can be colorful growths, looking like a mushroom, conk or shelf-life structure.

Fungi typically appear after a tree has been wounded. How does that happen? Well, say you’re cutting the lawn and you accidentally swipe the base of the tree with a part of your lawn mower. You think nothing of it, but now that tree has a flesh wound. Or maybe you take your pruning shears to some tree branches… and when you’re done, there are parts of the “inner” parts of the branches left exposed to the elements. Their protective covering has been pruned away, whether on purpose or accidentally. Hey, it happens. Other ways trees get wounded include excavators (coming along to carve out areas for sidewalks, for instance), trench builders (putting in or taking out water/gas lines), and even good ol’ wind damage thanks to Mother Nature.

Fungi are looking for a place to grow, and tree wounds are ideal. Therefore, a fungus will enter a wound and start to discolor it. Essentially, fungi cause wood to decay. Wood fibers get weakened. In many cases, roots get weakened, too, causing structural support problems for the tree– and it begins to look like it’s going to fall. Perhaps the tree begins to take on an asymmetrical shape. If you start to notice you’ve got large limbs that look like they’re dying and, indeed, they start to fall off the tree at the slightest hint of wind, you probably have a diseased tree.

Once a tree gets diseased it’s very hard to turn it around and make it completely healthy again– some might say it’s impossible. Over time, the tree may decay to the point where it becomes a danger to people and property around it. In that case, it’s time to call S & J Tree Care to come take it down and remove it safely and properly.

How To Hire A Tree Care Company

How To Hire A Tree Care Company

Hiring a Tree Care Company

Trees have the power to increase property values, improve air quality, reduce household energy costs, improve water quality and more according to the Unites States Department of Agriculture (USDA) Forest Service. When trees are present in our everyday landscape it’s easy to forget just how significant they are to all of our lives. Trees of the right variety placed properly and cared for professionally provide enormous benefits and have significant economic, environmental and societal value.

 

Become an intelligent tree care consumer. And remember, without regular care, trees can quickly change from a valuable resource to a costly burden.

What is an arborist?

Be aware that the credentials of someone calling themselves an arborist can vary widely. Don’t just hire someone with a chain saw who knocks on your door!

An arborist is a professional who cares for trees and other woody plants by pruning, fertilizing, monitoring for insects and diseases, consulting on tree related issues, and occasionally planting, transplanting and removing trees.

Beware of the fly-by-night “individuals” who call themselves arborists. “With hundreds and possibly thousands of dollars at stake, not to mention the integrity and appearance of your property and your personal safety, make sure that you take your time in deciding which company you should hire,” warns Peter Gerstenberger, director of safety and education for TCIA. “Disreputable companies are renowned for ripping gutters off, breaking fences and bird baths, and even dropping trees on houses. Then they typically fold up and leave, never to be seen again.”

How do I find an arborist/tree care company?

Use TCIA’s search to find a TCIA tree care member company in your area. 

When you hire a TCIA-member tree care company, you are assured that the company you are hiring has access to the most recent information on tree care practices, and that they are insured and/or bonded to protect you and your valuable property. Verify additional professional affiliations the company might have, such as membership in International Society of Arboriculture (ISA).

You can also seek recommendations from neighbors, friends or business associates who you know have had professional tree care work done in the past and check the Better Business Bureau to find information about companies in your area. When reviewing companies, look for information about the company: number of years in business, professional affiliations, licenses, certification, etc.  Also check with your City Hall and see if your municipality requires licensing for arborists; many communities do.

You may also consider hiring a TCIA Accredited company. TCIA Accreditation is a voluntary program that credentials companies which meet stringent criteria for professionalism, employee training, state and federal safety regulations, business ethics and customer satisfaction. Under the process, businesses undergo an extensive review and a comprehensive audit of professional and business practices aimed at safeguarding consumers.

Accreditation is the only business practices and compliance program for tree care companies in America. Companies accredited by TCIA are required to provide documented proof in many areas that protect consumers. When you hire an accredited tree care company, you can rest assured that TCIA has checked for proper insurance, applicable business and pesticide licenses, and customer service that is reliable and ethical. Make an informed decision – choose a company with the TCIA Accreditation “seal of approval.” Find an Accredited TCIA member company by company name, zip code, services or other criteria.

What should I ask when I meet my arborist?

  • When meeting with your arborist for the first time, ask to see current certificates of liability and workers’ compensation insurance, if applicable.
  • Ask for references, and check on the quality of their work.
  • Don’t be rushed by a bargain, don’t pay in advance, get estimates in writing and insist on a written work order. Get additional estimates or opinion of the needed work.
  • Insist on a signed contract as to cost, dates when work is to be performed, and exactly what is to be done.
  • Ask about ANSI Standards. A professional arborist will be aware of the current safety, pruning, fertilizing, and cabling standards.
  • Insist that climbing spikes are used only if the tree is to be cut down; spikes damage the tree.

What if I don’t want to hire a professional?

Care for your trees needs to be done by skilled, trained and insured professionals, both for the health and beauty of your trees and for your safety and financial well-being.

For your safety, do not perform tree-work. Taken from published reports, TCIA maintains a monthly list of Accident Briefs that outlines the sad details of homeowners getting severely injured or killed when attempting their own tree work. If you are at all uncertain about what could happen by attempting your own tree work, contact a qualified tree care professional for help.

For your financial protection, hire a company that is professional. Studies published in the Journal of Arboriculture have demonstrated that it is actually cheaper to regularly prune trees rather than neglecting them, and cleaning up the resulting damage! And no matter when you’re hiring them, be aware that if the tree care company doesn’t have insurance or is not a legal company – you, the homeowner – could be held responsible as a contractor.

When to Hire an Arborist

Bonus Tip: Break with tradition and shop in the off-season.

Spring and summer are typically when our thoughts turn to the yard and the trees, but shopping for tree care in the winter offers several potential benefits:

  • Many reputable companies offer modest price discounts on winter work. They do this to provide employment to their loyal help and to improve their cash flow.
  • You can get the service when you need it. The best service providers typically have huge backlogs of work in the summer, but can respond to your needs more quickly in the off season.
  • Winter is a good time to look at and work on most trees. The tree architecture is highly visible, and there are no leaves to add to the cleanup time.

Written By www.TCIA.org

Drought Season

Drought Season

As humans, we seem to struggle with things that we have no control over. Bullies at your kids’ school, the driver of the car in front of you on the highway and prices at the grocery store are everyday examples. The weather is another. The common sense approach to dealing with any of these circumstances is the same. First, it’s about acceptance. Take a deep breath, accept it, and then examine the options and management strategies going forward.

Recent rainfall patterns

Many regions throughout the U.S. have been in soil water deficit patterns the past few years. While this is not a surprise to tree care providers in those locations, arborists in other areas can benefit by being aware of the drought condition of the country as a whole. One of the best sources of this information is the National Drought Mitigation Center website, coordinated cooperatively by several agencies. As you peruse this site, be sure to click on the Drought Monitor icon to investigate current conditions; this helpful tool is updated on a regular basis throughout the year.

Trees on a slope suffer because runoff occurs before adequate infiltration takes place. Photos courtesy of John Fech.

Trees on a slope suffer because runoff occurs before adequate infiltration takes place.
Photos courtesy of John Fech.

Droughty sites

Regardless of how wet or dry it has been in various locales, some landscape features and microclimates are simply better than others in terms of water efficiency.

  • Slopes — In terms of dealing with drought, slopes are horrible. The main issue is that there’s no way to retain the water before it runs off. When rain occurs as a gradual light precipitation event, the effects are reduced, but they still occur. Clay soils add insult to injury in that they offer much reduced opportunity for infiltration at the top of the slope. Slopes that are hard to mow are good indicators where this will occur, but even gradual slopes will be subject to uneven infiltration if trees are growing in clay soils.
  • Thin narrow strips in the landscape — Usually covered with concrete or another impervious surface, trees in these locations rarely gain the full effect of natural rainfall events. Considering that less than a quarter of the potential roots are below soil or a modified soil, it’s no wonder they often struggle. In a similar problematic way, flat expanses of asphalt and concrete materials that surround a tree and cover the roots are also frequently encountered in both residential and commercial sites. In addition to being restrictive for water percolation, the covering also cuts off oxygen exchange.
  • Low-maintenance areas of the landscape — Various out-of-the-way locations, such as alleys, rural cemeteries, parks, golf course roughs, museums and school grounds, can be droughty sites for several reasons. Many of these areas contain buried debris, pea gravel, perched water tables and compacted soils, which limit infiltration and tree root expansion.

Separate turf from ornamentals

Turf and trees differ greatly in the amount of water they need, with trees requiring about one-third (on average) of what is necessary for turf. If placed together in the landscape, problems arise. Two main outcomes can occur if they are co-located.

Good mulching practices are important when dealing with drought.

Good mulching practices are important when dealing with drought.

When water is applied with the goal of keeping turf green and healthy, the result is that the rootzone stays moist to soggy for the benefit of the turf and the trees tend to be overwatered, with water filling the spaces between soil particles for long periods of time. Likewise, when water is applied to meet the needs of the trees, the turf may suffer.

A best management practice concerning trees and turf is that they should be separated in the landscape and cared for as separate masses of plant materials. Whenever possible, work with landscape designers and architects to encourage their division.

Young and old, deep and shallow

Efforts to keep the root systems of young trees moist (not soggy or dry) are more important than efforts aimed at older trees, at least in the short term. Younger trees have smaller root systems and have less capacity to recover from periodic droughts than older trees with extensive and expansive roots. As such, in terms of prioritization, if several weeks go by without a significant rainfall event, focus your initial efforts on providing supplemental irrigation for young or newly planted trees.

In order to determine the moisture content of trees (or turf for that matter), insert a deep probe into the root profile, pull it out carefully and slowly and feel the tip end. If it goes into the soil easily and a slight sloshing sound is made, then the soil is too wet. If the soil is dry and powdery, then it’s too dry. If it feels cool and moist, then, like Goldilocks with the Three Bears, it’s just right.

Drip irrigation is a good slow and steady water delivery method. Photo: John Fech

Drip irrigation is a good slow and steady water delivery method. Photo: John Fech

Whether trees are young or old, the goal is to deliver water to the bottom of the roots and keep them moist. It takes some experimentation at first to know how deeply various trees are rooted, but starting with the mindset that the majority of feeder roots are in the upper 24 to 30 inches of the soil profile is helpful in terms of overall rooting depth. When problems are encountered, excavation exercises can help you gain insights during the diagnosis.

Methods

There’s more than one way to bake a cake, and the same can be said for watering a tree in a drought.

Slow trickle – Probably my favorite. With a drip irrigation system, soaker hose or a hose laid on the ground, the slow and gradual emitting of water limits evaporation and facilitation of infiltration, which is beneficial for clay or compacted soils.

Water bladders – Especially good for young trees, placing 15 to 20 gallons of water near the base of the tree to be absorbed slowly can be quite effective. These work well, however, the need to refill these can be a limiting factor to their success.

Delayed starts – On slopes and in narrow strips, adjusting a time clock controller to run a particular zone for a short time (10 minutes or so), then stopping to allow the applied water to percolate downward, and then start again after a couple of hours to finish the job is a good way to overcome the natural tendency for water to run off before it infiltrates.

Overhead – From an efficiency and uniformity standpoint, overhead irrigation is generally not considered a good method. However, it’s easy to see where the water is going, and easy to measure how much is being received. Overhead irrigation replicates Mother Nature to some degree as well.

Water lance – Attached to a water tank or spigot, a slender pipe with a hole in the end can be effective because it limits evaporation; however, it can create excessive water channels or chasms underground. In addition, there’s the potential to push valuable water past the rootzone. When using a water lance, push it into the soil about 6 to 12 inches deep and use low water pressure.

When tree roots are covered with concrete, gaining the full effect of natural rainfall is limited. Photo: John Fech

When tree roots are covered with concrete, gaining the full effect of natural rainfall is limited. Photo: John Fech

Mulch for retention

After a rainfall, it’s desirable to hold on to the water and not let it evaporate. Proper mulch installation begins about 3 inches away from the trunk and extends to the drip line of the tree (or as far away as your client will allow). Obviously, several options exist, but the best advice on depth, type and placement comes from Mother Nature. She uses natural mulch, not rock or rubber; she allows it to accumulate to about 3 inches in depth before decomposing and recycling nutrients back to the roots; and she uses a variety of materials including bark, leaves, fruits, flowers and stems. As you communicate with your customers about mulch product options, point out a few well-mulched landscapes, either naturally placed or replicated by an arborist.

Tree Care After the Storm

Tree Care After the Storm

When the call goes out to tree service companies to work on widespread storm damage, anybody with a chain saw and a pickup can respond, but it’s the companies that are prepared and have experience in this field that excel and come out making money.

In general, there are three segments of storm response: preparation and planning, executing the tree work, and the cleanup and follow-up phase. The following companies have done this kind of arduous work after many storms in different areas of the country, and each has its own methodology for dealing with the fallout.

Storm damage crews must be highly skilled in the response phase, though more ground workers are required for the cleanup phase. Photo: Bartlett Tree Experts

Preparation

“You’ve got to drop everything you’re doing. It’s very challenging from that standpoint,” says Ryan Lombardo, owner of Lombardo Management General Contractors of Atlanta, Georgia. He should know, his grandfather “traveled the storms” for years, and now Lombardo has set up a unique way of dealing with everyday tree services, as well as storm catastrophes.

A storm demands services bigger in scale than a company would normally be able to cope with, Lombardo says. A company must be prepared to ramp up its activities to the level demanded by its clients. LMGC is an unusual company, in that it has about 50 talented supervisors, some of them part-time workers, who contract on-the-ground work through a wide network of other companies in its service area and beyond.

In preparation for storm emergencies, LMGC maintains equipment that will be used only in the event of major storms. The company has responded to Louisiana hurricanes and ice storms in Massachusetts. It purchased 30-foot construction trailers outfitted with the communications and tree removal equipment needed on a large scale.

“We were in on the Katrina cleanup, and we could hardly make a phone call out,” says Lombardo, who explains that chaos and confusion ensue in a community hit by a major disaster. Thus, the company’s emergency trailers are equipped with satellite communications, Motorola radios that will reach out 15 miles and fuel supplies for up to two weeks of operation.

The trailers also store food, water and bunks for sleeping, as none of these basic human requirements may be available in a disaster area. The trailers, which cost up to $100,000 stocked, also have the computers and office equipment needed to service the paperwork and plans needed to deal with the Federal Emergency Management Agency and county and municipal clients. LMGC relies on other contracted companies to provide crews and heavy equipment, but it has to be able to manage and coordinate them.

Planning and execution of the cleanup will be different for every community, and the company has collected plans for cities from Texas to North Carolina in order to be prepared. It also keeps records of the different emergency management plans and contacts for the agencies involved. Lombardo’s company must abide by those, as well as insurance company rules. This is when that network of companies with trained personnel comes into play.

Having experienced supervisors who know the procedures, as well as the labor and equipment required, is a big part of such jobs, because from the initial scouting on it will be extremely difficult to work under the tight emergency constraints. Training is another major element in preparedness. LMGC may have training sessions every day during the periods before disaster seasons. This may consist of the nuts and bolts of emergency management or how to keep a backpack with a change of clothes and other personal needs, because when a disaster strikes, the company may need to go into action immediately.

Insurance for clients must be examinedtree removal is usually covered, but roots and stumps are not. Photo: Bartlett Tree Experts

Execution

David McMaster is a storm master. He’s the vice president and division manager for The Bartlett Tree Experts in Southampton, N.Y., overseeing operations for five offices in the Long Island, Queens and Brooklyn areas, as well as several counties in Connecticut. Over his 29 years with Bartlett, he has experienced hurricanes, ice storms and tornadoes. The 120 production employees he oversees are not storm chasers, but they must respond to clients’ needs.

Bartlett is a large national company, but McMaster notes that the safety and training coordinators in his division are trained to mobilize immediately and largely take responsibility for logistics and operations. A list of their clients is kept in their vehicles so they can be contacted and notified of damage, as well as to set up communication lines.

“The most fundamental thing that needs to be done, I think, is an overall assessment,” McMaster says. The company prioritizes storm damage work in three phases. The first is to perform a kind of tree triage in order to ensure the safety of persons and property. For example, removing a tree from a house that has had its roof punctured would be a top priority.

This is a crucial and dangerous phase of the work, wherein the company will “hopscotch around” its client base in order to perform those important tasks, which often includes power line clearance. Heavy reliance is placed on experienced crews that have the particular skill sets needed for this type of work. In fact, the company identifies such crews within each office and prepares them to be the first responders.

“Every office has an assigned crew in a position to react to storms,” he says, and McMaster will know specifically what competencies and equipment they will have on hand. Part of the job is to muster enough large equipment such as cranes and log loader trucks. Crews must be trained in safety under these adverse conditions, as well as in special work such as advanced rigging techniques. Additional company crews from as far away as Texas and Illinois may be called in to assist, as Bartlett’s clients include municipalities that expect prompt response.

The second phase is the removal of the damaged trees and wood. This requires the use of even heavier equipment and trucks with lift gates to reduce the strain on workers. The company does not take chippers and stump grinders to clients’ properties in the first phase, because they will be in the way, and the workers will be inundated with requests to take away the wood immediately.

During both of these phases, safety is the primary concern of the crews. Every office has an inventory of extra equipment, such as hard hats and large chain saws, and Bobcats and front-end loaders make the work lighter. All workers wear ISA-sanctioned safety gear. Phase 2 crews don’t need all of the aerial skills of the phase 1 crews, but more workers will be needed because of the volume of materials handled.

“A big part of this job is to ensure that our crews have the right amount of food and fluids,” McMaster says. That is the job of coordinating supervisors, and that also includes keeping lists of hotels where workers can stay near the job. Company offices are used as a “bivouac,” where they can sleep, and they have utilized camps such as those used for 4-H students to keep workers near the job.

When storms strike, and lives and property are at risk, tree companies must be ready to immediately respond to clients’ needs. Photo: Bartlett Tree Experts

Cleanup

Greg Gray has been in business for 25 years and has seen many punishing storms in the Pacific Northwest. His company, A Better Cut Greg’s Tree Service in Vancouver, Wash., is small, with only three employees, including himself. However, when widespread storms or tornadoes hit, he is set up to respond immediately. His crew and any emergency hires will be trained and conscious of the difficulties presented under these conditions.

“It’s a lot more adverse conditions when you’re trying to cut a 150-foot fir tree out of somebody’s living room,” Gray says, and the storm may still be raging while crews work. One thing he does is set up a priority system for cleanup, because it is more important to take a downed tree off a house than it is to remove it from a car, for example.

“You have to schedule stuff, because in these storm conditions you are on the move constantly,” he notes. This means the company has to be highly organized with both crews and equipment. It is also important in the cleanup phase to not take on too much, while at the same time having all the needed equipment at your disposal.

Communication with the client on his needs and the type of homeowner’s insurance he carries is crucial. The ultimate payment depends on the stipulations of the insurance policy, so these aspects must be talked over and agreed upon before work starts. For example, Gray says, many policies will pay for the removal of the tree, but not the roots or stump, and this should be ascertained early on.

The cleanup phase of a disaster is very labor intensive, and it calls for specific types of equipment that differs from normal tree removal jobs. Demand for qualified tree labor is high at the time, and that means the company must maintain a list of potential temporary employees beforehand. Gray says he even networks with his competitors to make sure he can find good help.

Gray owns 55-foot Hi-Ranger and 35-foot Versalift boom trucks, as well as large Vermeer and small Rayco stump grinders. He has a dump truck and a Brush Bandit chipper. These generally serve him well during a disaster, because he can clean up only one job at a time anyway. He keeps his crew working together throughout for both speed and safety requirements, so he has to carefully schedule when the crew can return to a site and do chipping and wood removal. It often takes three or more visits.

Routes to disposal sites must also be scouted during a disaster, because roads may be closed. He comes prepared to clear trees from roads, but it is more efficient to take cleared routes. Every tree company will be hauling to the same sites at that time, so Gray lines up private people who will take the wood from emergency jobs. Over the past 25 years, he estimates, he has been able to give away 95 percent of the wood and chips he has processed. He tries to give as much as possible to senior citizens who rely on free wood for fuel. He also has nearby farmers who will allow him to unload on their property in emergencies.

Since time is a factor on these jobs, and his crew often puts in 15-hour days and may work into the night, safety is a major concern. Instead of rushing jobs during the crisis, Gray’s crew is trained to slow down and make sure safety is paramount. This is where a bonded and insured company can have an advantage over fly-by-night companies that try to take advantage of the emergency situation.

Gray is proud of the fact that he has never had to hire a lawyer to represent him because of poor workmanship or mistakes. This comes from the fact that, even during an emergency, attention is paid to doing quality work. Through follow-up calls and visits, he will make sure his clients are satisfied. That leads to work once the disaster is finished.

“You get a lot of referrals for a job well done,” Gray says, and that helps him compete with companies that are not licensed and bonded. And, the next time a disaster strikes, he will be the one people call.

Tree Care Electrical Hazards

Tree Care Electrical Hazards

Tree care crews work in a variety of environments: urban, rural, suburban and sometimes isolated, but all of these work sites will typically have one very important, and dangerous, item in common: electricity.

As much as the beauty and wonders of electricity may evoke a sigh of contentment as a refrigerated adult beverage is cracked open and the flat screen responds readily to the buttons on the remote, that same force can stop a beating heart, cause horrific burns or even blow holes right through equipment and flesh. This almost always present, powerful and dangerous force requires that all crew members be well trained and educated on how to identify electrical hazards, avoid them and, if present, know the safest way to work around them.

Dr. John Ball’s accident and fatality statistics have shown year after year that electricity plays a major role in injuring, or, more sadly, removing permanently from the workforce, those tree care personnel who either don’t have a knowledge and understanding of electrical hazards, or use a little knowledge or misinformation to make very bad decisions. As with most topics discussed in this column, there is no substitute for hands-on field education and training in electrical hazards, and there are a wide variety of organizations that instruct in this vitally important topic, but the basic information discussed here provides a good introduction to what tree professionals should be looking out for as they go about their daily routine of caring for trees.

Minimum Approach Distances for Non-line Clearance Qualified Arborists

Kilovolts phase to phase    Feet    Meters
0.0 to 50    10′    3.05
50.1 to 72.5    10′ 9″    3.28
72.6 to 121    12′ 4″    3.76
138 to 145    13′ 2″    4
161 to 169    14′    4.24
230 to 242    16′ 5″    4.97
345 to 362    20′ 5″    6.17
500 to 550    26′ 8″    8.05
785 to 800    35′    10.55

Minimum approach

Table 1 illustrates the minimum approach distances for non-line clearance qualified arborists, and as such should be obeyed in all situations. In short, a non-qualified climber or crew member should never be closer than 10 feet from any energized conductor and should be much farther away in the case of greater voltages. As can be seen in the table, higher voltage means more distance. Crew members would do well to remember that while electricity typically will travel through any conductive material in the shortest and most direct path to the ground, it can certainly also arc right through the air to a conductive material, depending on weather conditions, and thus continue its journey to the ground through the climber, tree or aerial lift.

Electrical contact may be either direct or indirect, but the end result is typically the same, with the voltage continuing on its merry way to the ground leaving behind damaged, or even dead, material and personnel.

The top of a tree well within the minimum safe approach distance for non line-clearance qualified arborists, meaning they shouldn’t even be in the tree. Photo: Michael Tain

Personal protective equipment

As mentioned, non-line clearance qualified personnel should never be nearer than 10 feet from an energized conductor, and with higher voltage should be even farther away. However, there are aspects of PPE that even these personnel need to be aware of for safety reasons.

Any hard hat or helmet that is used in the vicinity of electrical hazards must have an E rating and consist of a solid body with no vents or holes that would permit electricity to directly enter the brain housing group. In general, all climbing equipment is conductive to some degree, but in the presence of electrical hazards tree crews should take care not to use gear that is extremely conductive, such as wire-core lanyards, and use less or nonconductive options, such as fiberglass ladders and foam-filled poles. A common misconception is that the material, if present, coating many electrical lines is insulation. This material is weatherproofing at best, providing minimal, if any, insulation and should never be considered to provide any protection against the electricity in the wire.

Direct contact

This term describes the contact of any part of the climber or operator’s body with an energized conductor. Direct contact is often a consequence of a climber or aerial lift operator not fully inspecting the work site or all aspects of the tree’s canopy for the existence of overhead energized conductors. In addition, storm situations in which lines have reached the ground, are entangled in brush, or have even settled and snaked into a tree’s canopy after detachment from the poles can lead to direct contact. There is no better preventative measure for direct contact than a full and complete hazard inspection of the tree and work site by all crew members prior to work. After all, if you don’t know it’s there, it’s pretty hard to avoid.

Indirect contact

Indirect contact is contact with an energized conductor through something other than the pieces and parts of the climber’s or operator’s body. It can happen through trees, branches, ropes, trucks, uninsulated aerial lifts, conductive tools or anything else you care to name that can conduct electricity. Indirect contact can also happen, particularly during storm situations, when an energized conductor has come in contact with a typically “safe” conductor such as a metal fence, cable lines or even the metal stripping lining some street curbs. This type of indirect contact possibility can be particularly hard to identify due to the possible distance away from the downed line that has “electrified” the fence or curb. Once again, the primary preventative measure for avoiding indirect contact is inspecting and recognizing the existence of electrical hazards, but also being mindful of how actions within the work plan — climbing and rigging lines, aerial lift booms, pole pruners, falling branches, etc. — may come into or affect the minimum approach distance, allowing the electricity a path to the crew indirectly.

The entry and exit holes made by electricity through a pole pruner that inadvertently came in contact with an energized line. Thankfully the user was not injured. Photo: Courtney Keely

Ground fault

This term describes a situation in which the ground itself has become “juiced.” The area of ground energized will vary with voltage levels, soil type and the amount of moisture present, but is often caused by downed lines in storm scenarios or through the outriggers on an uninsulated or poorly maintained aerial lift that has come in contact with a line. In the case of the energized truck, it is yet another reason for ground personnel to avoid standing around leaning against the truck while the operator works aloft.

Particularly dangerous and unique to ground faults is the possibility of step potential. In all likelihood the areas of the ground that are energized are all at differing levels and anxious to “even” themselves out. A crew member walking through such an area, or fleeing a suddenly energized truck, provides the conductor the electricity needs, entering through one foot, moving up through the body and then out through the other foot to a piece of ground with a lower voltage. One option to deal with this step potential is for the crew member to take very small shuffling steps, keeping their feet close together, to get out of the area of ground fault, thereby minimizing the possible voltage differences between one foot and the other.

Emergency preparedness

All crew members should have the knowledge and training to react quickly and efficiently in the event of an electrical hazard accident. This should include items such as operating a bucket with an electrically incapacitated operator from the ground, having the number of the responsible utility readily available, methods and techniques for safely breaking line contact from the ground, and how to avoid becoming a “second” victim.

Electricity is something that is present, both benevolently and hazardously, in almost every day of tree care work. While the hazardous nature of electricity can never be eliminated, knowledge, training and awareness can go a long way toward helping tree care professionals work safely and efficiently in its presence. Regardless of whether a crew member is line clearance qualified or not, they must always remember that electricity is completely and totally nondiscriminatory: it will take the shortest path to the ground, whether it be tree, tool or flesh, so it’s best to avoid being in its path.

How Weather can Impact Trees

How Weather can Impact Trees

In the world of arboriculture, or at least the arborist, a variety of factors impart effects on the trees we care for each and every day. One of the most impactful, or at least most commonly referred to is weather. The adage goes like this: “Can’t figure out what’s wrong with a customer’s tree? Well, you can always blame the weather.”

A few terms are helpful to consider: Weather is what we experience day to day and week to week. A forecast is what we expect, or are told to expect. Climate is an accumulation of weather events over a long period of time.

Leaf scorch is a temporary shortage of leaf moisture. Photo: John Fech

In a sense, weather can be a good answer for the unknown or the hard to determine, as it is such a major influence. There’s nothing like it terms of impact. After all, it’s multi-component factor with winds, flood, hail, heat, drought, sun, rain, snow and ice. It’s an all-season and ever-present factor. There is no rest from the weather; it’s dramatic – extremes seemingly are commonplace these days — and, it’s a mimic because weather related maladies are often difficult to diagnose because they closely resemble insect or disease related injury causes.

Drought stress can occur easily when no one is responsible for newly planted trees in a limited root zone. Photo: John Fech

Good and Bad Weather Conditions

Weather is often defined in black and white terms of good or bad, at least from the human perspective — but what’s good weather for a tree? Perhaps it’s best to describe it in two ways, in the establishment phase and the maturity phase, or even year one and year two and beyond.

Initially, even if a tree is touted to withstand soggy or dry soils such as a baldcypress or a chinkapin oak, most trees tend to be favored by moist, not soggy or dry soils, moderate temperatures and moderate winds. Sure, eventually drought tolerant species will be able to survive well on limited water, but at first, moist soils, favor the development of roots and shoots. Likewise, exposure to gentle to moderate winds encourage a tree to respond by developing a strong structural root system and bole to resist wind throw. After establishment, good weather conditions are those where most days are in the desired range for the species in terms of moisture, wind and sun.

Conversely to the above, bad weather conditions are those that present a tree with significant time outside of the desired range for a given species.

An important caveat to the good and the bad is the ugly, which is the time lag or the length of time that it takes for symptoms of injury that are due to weather to express themselves. For herbaceous plants such as tulips, turfgrass or hostas, there is a short time involved with the visibility of a cause and effect of weather ie. it’s hot and dry for 4 weeks, without supplemental irrigation, Kentucky bluegrass is going to wilt in the heat and appear highly stressed. With established woody plants, the symptoms often show up several months later or even the next year in response to the same heat and drought. Most customers simply cannot fathom this difference in responses to weather; therefore it’s wise to try to explain or at least warn them in advance of what could come to pass.

Effects of wind can be significant, like the storm damage to this backyard tree. Photo: John Fech

Commonly Seen

Here are some of the more commonly observed/encountered maladies due to weather:

Drought injury and leaf scorch — Caused by extended periods without adequate rainfall or supplemental irrigation. Prevent it by providing even moisture, mulching to retain moisture once received, monitoring often with a soil probe/screwdriver to gauge moisture content.

Leaf scorch is a temporary shortage of leaf moisture. Photo: John Fech

Winter desiccation — Caused by strong, consistent winds that dry out leaves; worst on broadleaf evergreen species such as holly and arborvitae. Prevent it by irrigating to moisten soil and enter the winter with roots fully hydrated, apply an anti-desiccant product 3-4 times as per label instructions, install wind screens in high value situations.

Winter desiccation can be devastating in some years. Photo: John Fech

Sunscald — Caused by solar rays that warm the surface of thin barked trees in winter, causing it to be warm and cold in a series of diurnal cycles. Prevent it by installing white wrapping or PVC drain tile to reflect solar rays in late fall, remove in late winter.

Prevent sunscald with white wrapping. Photo: John Fech

Sunscald damage to this thin barked tree. Photo: John Fech

Hail Damage — Caused by ice chunks striking the bark with sufficient force to break the surface and allow desiccation and entry of pathogens. Correct it by pruning out badly affected branches.

Wind Encouraged Herbicide Drift — Caused by movement of broadleaf herbicides from adjacent areas. Prevent and correct it by discussing potential for damage with nearby property owners. Provide for future needs of tree but avoid overwatering and overfertilizing.

Effects of wind can be significant, like on this broken ash. Photo: Nancy Null

Frost Injury – caused by cold temperatures received after buds have broken dormancy. Prevent or correct it by avoid species that are prone to frost injury. Prune out badly affected branches.

Wet Soils – caused by overabundant moisture from flood, irrigation system leaks and zealous turfgrass irrigators. Prevent or correct it by measuring rainfall and irrigation amounts received and adjusting accordingly.

Effects of wind can be significant. Photo: John Fech