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Tag: Emerald Ash Borer

Emerald Ash Borer – Invasive Species Highly Destructive to Ash Trees

The emerald ash borer (EAB, or Agrilus planipennis) is a green beetle native to Asia and Eastern Russia. Outside its native region, the emerald ash borer is an invasive species, and emerald ash borer infestation is highly destructive to ash trees, having infested millions of ash trees in its introduced range. The Emerald Ash Borer was first discovered in the United States in Michigan in 2002. Experts believe the insect was brought to North America unintentionally in ash wood used to stabilize crates during shipping. Stein Tree Service offers helpful information about this invasive pest.

Life Cycle of the Emerald Ash Borer

A key part of emerald ash borer awareness is knowing the emerald ash borer life cycle. Understanding the life cycle will help you understand what to do when you see any activity on or around your property. Below are the different life cycle stages of this highly destructive invasive species.

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Adults

The adult emerald ash borer is a dark metallic green, bullet-shaped beetle, and about 1/3 inch long (8.5 millimeters), and 1/16 inch wide (1.6 mm). The body is narrow and elongated, and the head is flat with black eyes. After emergence, adults fly into the ash canopy, where they feed on leaves throughout their lives. EAB adults start mating one week after emergence, and females begin laying eggs 2–3 weeks later. A typical female will lay approximately 100 eggs during her 2-month life; 56% of these eggs, on average, will be female. EAB adults are readily observed mating and egg-laying on the trunks of ash trees on warm, sunny afternoons and evenings in the field. The adults of both sexes are strong fliers.

Eggs

A female EAB may lay more than 100 eggs in her lifetime, depositing them individually or in groups on the bark of ash trees along the trunk and portions of the major branches. Eggs are laid in areas where the bark is rough and between bark layers or in bark crevices. 

Eggs are approximately 1.0 mm long x 0.6 mm wide and creamy white when laid; fertile eggs gradually turn amber after a few days and hatch after about two weeks.

Larvae 

Newly hatched larvae bore through the bark to the phloem and outer layer of new sapwood, where they feed until the weather gets too cold in the fall. There are four stages of larval development (instars). As they feed, the larvae create long serpentine galleries filled with frass, which enlarge in width as they grow.

Larvae are creamy-white and dorso-ventrally flattened. When fully mature, fourth-instar larvae are 26 to 32 mm long. Their head is mainly retracted into the prothorax with only the dark brown mouth parts visible. The prothorax is enlarged, with the mesothorax and metathorax narrower. Larvae have 10 bell-shaped abdominal segments and a pair of small brown structures called urogomphi, which are characteristic of all larvae in the genus Agrilus.

Overwintering Larvae, Pre-pupae, Pupae, and Adults

In the fall, mature fourth-instar emerald ash borer larvae excavate pupal chambers in the sapwood or outer bark where they fold into overwintering “J-shaped larvae.” In the spring, the J-shaped larvae shorten into prepupae then shed their cuticle to become naked pupae. Pupae are initially creamy white, but the eyes turn red, and the bodies begin to darken as they develop.

Another critical aspect of emerald ash borer awareness is identifying signs of infestation. Adults chew D-shaped exit holes through the bark to emerge 

Emerald Ash Borer Larvae

from infested trees and can immediately fly upon emergence. EAB larvae that are immature as cold weather arrives in the fall will overwinter in their larval gallery. Larger larvae complete development the following spring, whereas smaller larvae may require another summer of feeding to complete development.

Symptoms of EAB Infestation

Look for these telltale signs that your ash tree suffers from EAB infestation. To properly identify the presence of this Asian native, look for a combination of two or more symptoms.

  • Crown Dieback – as a result of multiple years of EAB infestation, the larvae will disrupt the delivery of nutrients and water flow to the upper canopy, resulting in the dieback of the upper and outer crown.
  • Epicormic Sprouting – as a defense mechanism, your trees will try to ensure survival when sick or stressed. Signs of new growth at the tree’s base or on the trunk—often just below where larvae feed- indicate infestation.
  • Splitting Bark – feeding EAB larval galleries will develop surrounding callous tissue, causing vertical splits to the bark. One can see these larval galleries when the split bark is pulled away.
  • Woodpecker Feeding – woodpeckers love to feed on EAB larvae underneath the bark. With excessive feeding on large numbers of larvae, the damages will look like strips of the tree’s bark have been removed.
  • Distinctive D-shaped Exit Holes in Bark – emergence holes are made as the larvae mature into adult beetles and emerge from underneath the bark.

Effect on Trees

The most significant damage to a tree by EAB infestation occurs when the insect is in its larval stage. The larvae feed on the conductive tissue of the tree. This tissue transfers nutrients and water from the roots to the leaves, and when this transfer  is disrupted, the infested ash tree begins to die. At the onset of winter, the larvae relocate to the tree’s bark, effectively cutting off the tissue more. This ultimately results in the death of a tree. This can take place over several years, and the first noticeable sign is usually some die back in the crown of the tree. The tree will usually be dead by the following year or soon after. In areas where the insect is invasive and has no natural predators, the emerald ash borer can and usually does have a devastating effect on the local ash tree population.

Treatment

Prevention of the emerald ash borer infestation is possible by injecting a systemic insecticide into the base of the tree. This treatment can prevent damage to the tree for up to two years. Note that arborists must reapply application every two years.

Soil injections are another option for the prevention of EAB. These insecticides are injected directly into the soil surrounding the tree’s base and are then transported through the rest of the tree via the roots. For these treatments to have the greatest effect, the soil must be moist when applied. Waterlogged or dry soils will result in less insecticide being absorbed into the tree.

USDA Map of Emerald ash borer spread in US- emerald ash borer invasive species - Stein Tree Service

image courtesy of USDA

Arborists can use two insecticide spray treatments:

  1. The first is a spray applied to the trunk and absorbed through the bark. This treatment is less invasive to the trees and soil. However, absorption is slow and limited if the tree has thick bark.
  2. The second spray treatment is a protective cover spray applied to the branches and trunk of the tree. This treatment kills adult beetles and newly hatched larvae but will not kill eggs.

Emerald Ash Borer in Winter

While the wintertime cold temperatures kill off many insects and pests, emerald ash borer can survive the freezing winter temperatures. These pests spend the winter preparing to feed on nearby ash trees. EAB survive the winter due to them living within trees and a natural “supercooling” ability.

How does EAB Survive the Winter? Trees

When female emerald ash borer lay their eggs between June and August, the beetles lay eggs between layers of outer bark and cracks and crevices of the trunk and major branches. Once the eggs hatch, the larvae burrow deeper into the tree, feeding on the tree until becoming adults in early spring. The outer bark provides insulation to EAB from the cold weather, so the in-tree temperature is more relevant to EAB’s survival than the temperature outside the tree. Trees that receive much sunlight in the winter can also be warmer despite the cold weather. The other primary reason these beetles can survive cold weather is supercooling.

Supercooling

Supercooling lowers the temperature of gases or liquids below the freezing points without becoming solids. Many animals use supercooling by producing antifreeze proteins that bind to ice crystals, preventing water molecules from binding to the ice crystals and the ice from spreading. Insects can also create these proteins and other sugars or alcohols to prevent themselves from freezing and improve their cold tolerance. Supercooling is common among insects, and that process is the other primary reason why EAB survives the winter.
Emerald ash borer’s supercooling has a limit on how low the temperature can get to be helpful. Most research has shown that a significant portion of larvae begins to die at around -10°F and the number increases with the lower temperature. The icy weather conditions needed to do so are much more common in northern, colder regions such as the Midwest or Canada. Pennsylvania, Delaware, and Maryland winters are unlikely cold enough or may only have short, extreme cold snaps instead.

What You Can Do During Winter

If you want to keep your trees safe from the effects of EAB, here are a few things you can do during the winter while EAB larvae are dormant and have yet to spread to other trees.

  • Look for signs of emerald ash borer on your property and among your trees.
  • Get your trees inspected by a professional, certified arborist.
  • Remove EAB-infested trees and care for surrounding trees to reduce the risk of future infestation.

Removing trees infested with EAB can be done carefully at any time, but the ideal times to remove trees are during the fall and winter. From October to May, EAB is mostly inactive, with the larvae burrowing under the bark of a tree. The dormancy results from the beetles protecting themselves from the cold weather. Because the pest is primarily dormant during the winter, the chances of the pest spreading are reduced. Therefore, the ideal time to remove infested trees is between October and May, with the lowest risk of other ash trees becoming infested.

Emerald ash borer’s supercooling has a limit on how low the temperature can get to be helpful. Most research has shown that a significant portion of larvae begins to die at around -10°F and the number increases with the lower temperature. The icy weather conditions needed to do so are much more common in northern, colder regions such as the Midwest or Canada. Pennsylvania, Delaware, and Maryland winters are unlikely cold enough or may only have short, extreme cold snaps instead.

Camping & Preventing Emerald Ash Borer Spread

If you love camping, be careful about transporting firewood, as that is one of the ways Emerald Ash Borer has spread throughout the United States. First, be aware that improper handling and movement of firewood could cause the spread of invasive pests, such as the emerald ash borer  Stein Tree Service warns that the emerald ash borer is dangerous to various ash and olive tree species, and failure to follow handling guidelines could spread the insect to the camping area you visit or to your home trees if you transport wood from the site.

If you plan to have a campfire, and campfires are allowed at your site, purchase wood at the campground. This practice is generally recommended to avoid introducing non-native insects to a site. However, the emerald ash borer is particularly harmful and destructive.

campfire - be aware of threats such as emerald ash borer and the lone star tick when camping - Stein Tree Service

Contact Stein Tree Service for A FREE, No-Obligation Consultation

ITo ensure your property has healthy ash trees from emerald ash borer invasive species,  contact Stein Tree Service at (302) 478-3511 to request your free, no-obligation consultation with one of our tree specialists.

REQUEST A FREE, NO OBLIGATION CONSULTATION
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Featured Programs

Inspect for Emerald Ash Borer infestation - Stein Tree Service - 1000

Spotted Lanternfly Quarantine Areas

Stein has a permit to work in spotted lanternfly quarantine areas in Pennsylvania and Delaware. Tree Service Companies have to be trained in proper moving and disposal of materials to avoid spread of the spotted lanternfly and Stein has completed the training courses.

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Inspect for Emerald Ash Borer infestation - Stein Tree Service - 1000

Emerald Ash Borer Inspection

In the spring, destructive ash borer (EAB) adult beetles begin to emerge.  These invasive pests can destroy your ash trees.  Our specialists are certified to treat for EAB in Pennsylvania and Delaware.  For A free consultation, contact us today.

Read more

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Spring Check up for Tree Care Should Include Emerald Ash Borer Inspection

Your trees have weathered the winter. With winter weather almost behind us and new buds popping up on trees, those trees may need special care to be their healthiest and most beautiful, particularly from emerald ash borer. The adult emerald ash borer (EAB) has been a significant and destructive pest in Pennsylvania for years. First discovered in the United States in 2002, the emerald ash borer has caused considerable damage to ash trees across the United States, affecting both the environment and the economy.

Because spring is the time that these adult beetles emerge and begin devouring the canopy of ash trees, we advise residents to be proactive and prepare to protect ash trees from this pest with a spring inspection of their trees.

Tree Care Spring Checklist

Just like you do spring cleaning in your home, some tree maintenance should be done regularly for your trees to thrive. To help you keep your trees safe, here is a checklist of what to do to maintain the health and appearance of your trees from the impact of emerald ash borer.

Inspect Your Trees Thoroughly

The adult emerald ash borer emerges in spring, but you should be on the lookout for them all year, as larvae activity damage can be seen when the trees are bare in winter. Start from your driveway and look at the landscape as a whole. You may see trees that are growing irregularly, thin areas in the canopy, fungal growths, or other issues that might get missed by a daily casual glance.

Look For Signs of Emerald Ash Borer Activity

Generally, the first major sign that EAB has infested a tree is a thinning of leaves at the top of the tree. Unfortunately, if you see this symptom, your tree will likely have been under attack for some time already. Other signs to look for include the following:

  • Yellowing of leaves
  • Epicormic shoots
  • D-shaped exit holes
  • S-shaped galleries under the bark
  • Unusual woodpecker activity

Emerald ash borer s shaped galleries - emerald ash borer inspection - Stein Tree Service Wilmington DE

Remove Debris & Tree Wrappings

Regular fall and winter seasons will cause leaves to cover the areas around the base of your trees. After the winter season we have just encountered, you may find larger branches that need to be removed. Rake or pick up leaves, twigs, or other debris around your trees.

Also, remove any protective wraps you have used during the winter and ensure that no roots or other items are wrapped around the trees. Leaving the tree constricted in any way can cause girdling, which cuts off the flow of nutrients and water and can weaken the tree trunk.

Add Fresh Mulch

In addition to giving a fresh look to your landscape, mulch can be a healthy addition. Adding a 3-inch layer of mulch around trees helps retain moisture and discourages weed growth. Be careful to avoid mulching too close to the tree. If mulch piles against the tree, fungi are more likely to develop, so make sure the mulch is all around the tree but just shy of touching the tree.

Trim and Prune

Though winter is the best time for pruning, trees may remain dormant in spring, allowing for late trimming and pruning. Remember that in Pennsylvania and Delaware, windy conditions and storms are common in the spring and summer, so thinning out branches will reduce the potential for weak branches to fall off and cause damage to surrounding property. Pruning trees and shrubs can help with overall air flow and also encourage healthy growth.

However, pruning requires the right knowledge and experience, as improper or incorrect cuts can lead to adverse outcomes, like over-pruning or improperly pruning, damaging the appearance or overall health of the trees. As a result, hiring a professional to do this type of pruning is recommended.

General Inspection Tips

In addition to our specific recommendations, here is some general advice when looking at your landscape in the spring.

  • Inspect all elements of your landscape to prepare for the summer.
  • Ensure irrigation systems are working properly and set to avoid spraying on trees susceptible to fungus.
  • Check for any damage that may have occurred. If tree limbs are weak, those branches may be susceptible to breakage, which could cause property damage. Damage to bark could also leave trees open to infection or insect infestation.
  • Look for the presence of fungus or other tree disease. Mushrooms growing on tree surfaces could indicate tree death, weakening the tree trunk and necessitating removal.

Call Stein Tree for Spring Tree Care and Emerald Ash Borer Inspection

Maintaining your landscape should be essential to your home spring cleaning routine. Stein Tree Service has provided excellent tree care, including tree removal, trimming and pruning, emerald ash borer inspection, and other services, to the residents of Delaware, Pennsylvania, and Maryland for over 40 years. We are also licensed to treat the emerald ash borer pest in Delaware and Pennsylvania. Contact us today for a free consultation or to learn about our services!

REQUEST A FREE, NO OBLIGATION CONSULTATION
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Featured Programs

Inspect for Emerald Ash Borer infestation - Stein Tree Service - 1000

Spotted Lanternfly Quarantine Areas

Stein has a permit to work in spotted lanternfly quarantine areas in Pennsylvania and Delaware. Tree Service Companies have to be trained in proper moving and disposal of materials to avoid spread of the spotted lanternfly and Stein has completed the training courses.

Read more

Inspect for Emerald Ash Borer infestation - Stein Tree Service - 1000

Emerald Ash Borer Inspection

In the spring, destructive ash borer (EAB) adult beetles begin to emerge.  These invasive pests can destroy your ash trees.  Our specialists are certified to treat for EAP in Pennsylvania and Delaware.  For A free consultation, contact us today.

Read more

Continue reading

Five Common Questions about the Emerald Ash Borer in Wilmington

An invasive insect species that made its way to the United States years ago is causing significant damage to the nation’s forests. Already discovered in 35 states, the Emerald Ash Borer (EAB) is a substantial threat to residents and businesses in Delaware.

FAQs about the Emerald Ash Borer in Wilmington

Certified Arborists in Wilmington, and across the country, are deeply concerned about the rapid spread of the emerald ash borer, so we at Stein Tree Service have put together a small FAQ to let people know about this new insect threat.

What is the Emerald Ash Borer?

Inspect for Emerald Ash Borer infestation - Stein Tree Service - 1000

The EAB is a small species of beetle native to Asia but accidentally brought to America sometime in the late 1990s. The insect is about the length of a dime, around 8.5 millimeters or 1/3 of an inch, and notable for its extremely brilliant metallic green shell and wings.

EABs lay their eggs (around 60 to 90 eggs a lifetime) beneath the bark of ash trees, which hatch into larvae that quickly begin consuming the flesh of the tree underneath. As the larvae feed on the ash tree and grow into adults, the beetles make their way to the exterior of the tree before mating and laying more eggs. The end result is an unhealthy, or even dead, ash tree, and more beetles that can spread quickly throughout a forest or urban environment.

Why Should I Care About The EAB?

In one sense, Delaware is lucky: we have relatively few ash trees, only around 2% of the population. However, while ash trees make up a small portion of Delaware’s native forests, urban areas can have ash trees as the prominent large street tree. So if you own any ashes – or white fringe trees – you absolutely should care because EABs can be deadly to any American ash species.

How Does The EAB Spread?

Like many infesting insects, emerald ash borer in Wilmington spreads via firewood, timber, or transplanted saplings. One of the sea venues likely brought them to America in the first place. The insects also have wings and are capable of migrating under their own power. While EAB can spread to other trees by flying, its rapid spread along the east coast is mainly due to being transported by those external means mentioned earlier.

How Do I Spot Signs Of EAB Infestation?

An emerald ash borer infestation can take a long time to show visible signs. Here are the main symptoms of an EAB infestation to look for:

  • Unexplained die-off on the upper canopy
  • Small tufted shoots on the trunk, called epicormic branching
  • Distinctive D-shaped holes left by emerging larvae
  • Vertical bark splits
  • Excessive woodpecker damage, from woodpeckers eating larvae

How Can My Trees Be Saved If They Have EAB?

Left untreated, EAB will eventually be fatal to ash or white fringe trees. If more than 30-40% of the tree’s canopy is already gone, chances are the tree is too damaged to survive. Otherwise, it can be possible to save the tree. Sustained pesticide usage is the normal course of action, and advance use of treatment may prevent an infestation.

Call Wilmington’s Stein Tree Service for Professional Tree Care and Emerald Ash Borer Concerns

Stein Tree Service has been providing skilled care of trees in Delaware, Pennsylvania, and Maryland for over 35 years. If you believe you have seen emerald ash borer in Wilmington, or signs of damage, contact one of our tree care specialists immediately to discuss your options.

REQUEST A FREE, NO OBLIGATION CONSULTATION
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Featured Programs

Inspect for Emerald Ash Borer infestation - Stein Tree Service - 1000

Spotted Lanternfly Quarantine Areas

Stein has a permit to work in spotted lanternfly quarantine areas in Pennsylvania and Delaware. Tree Service Companies have to be trained in proper moving and disposal of materials to avoid spread of the spotted lanternfly and Stein has completed the training courses.

Read more

Inspect for Emerald Ash Borer infestation - Stein Tree Service - 1000

Emerald Ash Borer Inspection

In the spring, destructive ash borer (EAB) adult beetles begin to emerge.  These invasive pests can destroy your ash trees.  Our specialists are certified to treat for EAP in Pennsylvania and Delaware.  For A free consultation, contact us today.

Read more

Continue reading

Emerald Ash Borer FAQs

The emerald ash borer (EAB) continues to be a significant problem for Pennsylvania and Delaware, and residents should be more aware to help protect their trees. To educate our customers and community about the dangers the emerald ash borer presents, Stein Tree has gathered some Emerald Ash Borer FAQs.

How Does EAB Kill Trees?

Emerald ash borer up-close view | Emerald Ash Borer FAQs | Stein Tree Service

An adult beetle lays eggs within the bark of an ash tree, which hatches about two weeks later. Once hatched, the larvae begin feeding on the bark, eating the inner tissue layers of the tree. The tissues that EAB larvae feed on are responsible for transporting nutrients and water. How long a tree takes to die after becoming infected depends on the size of the tree and the EAB population. Generally, infested small trees may die within 1-2 years, while large trees can be killed in 3-4 years.

Do All Ash Trees Get Emerald Ash Borer?

Almost all ash trees are at risk if the emerald ash borer continues to spread. American mountain-ash, or Sorbus americana, is one species of ash tree that has yet to be affected by emerald ash borer, as the species is not considered a true ash tree. EAB prefers ash trees that are stressed by disease or drought, but the pest will attack healthy trees as well.

Do Emerald Ash Borers Eat Other Trees?

Emerald ash borers almost exclusively feed on ash trees. In North America, the beetle has also been found to attack white fringetree, which is a non-ash species. However, the only widespread reports of trees damaged by EAB are about ash trees.

Cost of Treating Trees for Emerald Ash Borer

The cost of treating trees for emerald ash borer varies depending on how early the treatment begins and the severity of the damage. Price also depends on the size and the number of trees that need treatment.

How Can I Detect EAB?

The signs of an infestation can take a significant amount of time to be visible but can be spotted with diligence. Below are some of the main signs used to determine an EAB infestation:

  • Unexplained die-off on the upper canopy
  • Small tufted shoots on the trunk, called epicormic branching
  • Distinctive D-shaped holes left by emerging larvae
  • Vertical bark splits
  • Excessive woodpecker damage, from woodpeckers eating larvae

How Can We Get Rid of EAB?

The best method of getting rid of EAB is to be diligent of any signs or symptoms in your area and call a professional arborist to take care of the problem. First, professional arborists will be able to identify infestations accurately. Professional arborists who are certified to treat for EAB also have the knowledge, experience, and equipment to properly control and get rid of emerald ash borer while maintaining tree health.

Call Stein for Answers to Emerald Ash Borer FAQs, Inspection and Treatment

If you are concerned about emerald ash borer damaging your trees, contact Stein Tree Service. Our arborists, certified in Delaware and Pennsylvania for the treatment of EAB, know the best and safest preventive methods to help keep your trees safe. If you would like a free consultation or have any other emerald ash borer FAQs, contact Stein Tree Service.

Stein Discusses Invasive Species in Delaware

One threat that the Delaware environment faces is damage by invasive species. An invasive species is a non-native plant, insect or animal that is introduced into a region and causes some harm. That harm can affect plants or humans, and the damage can be economic or environmental. Many people have likely heard of some invasive species in their regions, but may be unaware of the harm caused by these species. Stein discusses a few of the invasive species in Delaware.

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Stein Tree Encourages Action during Invasive Species Awareness Week

Emerald Ash Borer on a branch | Invasive Species Awareness | Stein Tree Service
spotted lanternfly on a tree with egg mass

Many people have heard of the dangers of invasive species. An invasive species is introduced to a region rather than being native and damages the environment or human health. As a result of these invasive species, National Invasive Species Week has emerged to spread invasive species awareness and encourage people to stay vigilant. National Invasive Species Week 2020 is February 24 through February 28. Events take place all week in different locations to help increase awareness of invasive species. Notably this year, a webinar presented by NAISMA (North American Invasive Species Management Association) on the 25th includes the manager of “Don’t Move Firewood,” LeighGreenwood, and she will discuss the possible deregulation of EAB Quarantines.

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Stein Discusses Common Problems In Pennsylvania Tree Care

Mother nature creates such beautiful flora and fauna, but also creates problems that can destroy them. If you are a homeowner in Pennsylvania, tree care can be a frustrating experience at times. You may run into one of the more common issues that can do damage to your beloved trees. Your biggest weapon to combat these issues is knowledge and preparedness.

Stein tree care specialists have the years of experience, knowledge, and training to help you deal with anything from common issues like minor tree disease to some of the rarer issues you might come across. You can trust us to get the job done, and we even offer free consultations.

4 Common Pennsylvania Tree Care Issues to Look Out For

Some common but worrisome Pennsylvania tree care problems to look out for include:

  • Emerald Ash Borer (EAB)
  • Spotted Lanternfly
  •  Anthracnose
  • Ash Leaf Rust

Emerald Ash Borer

EAB is an issue that continues to spread and we are certified to treat for the pest. You may be dealing with EAB if:

  • The crown of your ash tree is declining or thinning.
  • You notice D-shaped holes in the trunk or bark of the tree
  • You find s-shaped galleries or trails under the bark

The main indications are very noticeable and are a very common problem throughout the country, not just in Delaware and Pennsylvania tree care. If you notice any of these signs be sure to give us a call.

Spotted Lanternfly

These colorful little insects can cause a lot of problems to certain types of trees. If you are concerned about spotted lanternfly you should look out for the following signs:

  • Black or grey wounds around leaves, stems, roots, and trunk
  • Yellowish mold growing near the trunk which may have a bad smell
  • Areas that look like there is sap being secreted

The spotted lanternfly likes trees such as willows, poplar, maple, as well as a variety of different fruit bearing trees. Because of the secretions that are left behind, depending on the stage of growth, a spotted lanternfly infestation can attract even more pests that can do damage to your trees. Our certified arborist can determine whether you have this issue, and we are certified to treat trees in all spotted lanternfly quarantine areas.

Anthracnose

Shade trees are vulnerable to anthracnose, a disease caused by a fungus. The disease attacks frequently in the spring, after the fungus sits in the dead twigs during the winter. In spring when conditions are wet, spores spread and cause lesions on the leaves.

Ash Leaf Rust

Ash leaf rust is an early spring fungus that has been rampant this year because of the cool wet spring. Affected white and green ash trees will develop yellow-orange spots on their leaves. Trees can lose their leaves prematurely and deformities can occur. This fungal infection can be treated using fungicidal sprays.

Stein Tree is Passionate About Tree Care

Whether you are in Delaware or Pennsylvania, tree and plant health care is an important part of your property maintenance. Whatever tree care issues you face, we are here to help. Our team of experts is looking forward to taking care of your tree care needs. Contact us today for a free consultation.