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Tag: Emerald Ash Borer

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 Tree Notes That Emerald Ash Borer Problem Has Spread in Delaware

Delaware residents may have heard of the proposal to deregulate emerald ash borer (EAB) quarantines. However, this is no indication that we have eradicated the pest. In fact, this destructive insect is still spreading its presence in our state. The first time EAB was discovered in Delaware was in 2016. Since then, additional infestations have been found in Middletown and Seaford, according to an article on The deregulation of quarantines is actually just an effort to move funding from quarantine services to research on how this threat can be eliminated.

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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.


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.

Stein Reminds Residents Emerald Ash Borer Awareness Week is May 19-25

As we noted a couple of weeks ago, spring is here and the emerald ash borer is becoming active. Adult beetles will soon be seen emerging from infested ash trees and fringetrees in Pennsylvania, Delaware and across the country. Homeowners need to be wary of this emerald green invasive pest that could destroy their trees. Emerald Ash Borer Awareness Week, recognized May 19-25 this year, helps increase awareness of the threat and advises homeowners of the signs that trees could be infested.

What is the Emerald Ash Borer Threat?

If you have never heard about this threat, the emerald ash borer (EAB) is a metallic green insect that has been attacking the white ash tree in the US since 2002, when the insect found its way here from its native Asian home, in shipping materials. Awareness of the emerald ash borer’s presence has been steadily growing, as the beetle has spread and our ash tree populations have been destroyed. Tree care specialists and state Departments of Agriculture have been continuing to prepare for or treat spreading infestations. Emerald Ash Borer Awareness Week is one effort to help manage the risk.

News About Emerald Ash Borer

Federal agencies are considering deregulating the quarantines for emerald ash borer in order to use more resources on research efforts to find solutions to the problem. The matter is still being decided, but some states without quarantines currently rely upon the federal restrictions to protect their tree populations.

Can Emerald Ash Borer Infestations Be Treated?

Typically pesticide applications are used to treat for emerald ash borer. The treatments may be surface sprays, soil saturations, or trunk injections. Some of the chemicals are regulated and must be administered carefully, in part to avoid risk to bee populations. Stein is one of the tree care companies trained and certified to use these chemicals in treating for EAB infestation.

If a tree has suffered too much damage, salvage may be impossible. If a tree’s canopy has been heavily impacted, removal is likely to be necessary to avoid spreading the infestation.

Emerald Ash Borer Awareness Tips

We have a few tips to help increase awareness of EAB and decrease the chance of spreading the pest to other areas.

  • Watch for signs of EAB infestation. Signs include thinning canopies, D-shaped exit holes in trunks, and S-shaped galleries under bark.
  • Avoid moving firewood. Collect firewood on your campsite or buy from a local source.
  • Share Information. When more people are aware of the threat and the signs of EAB, the chances are better that any EAB presence will be caught early enough for trees to be saved. Report discovery of emerald ash borer. Homeowners and tree care specialists in Delaware can contact the Department of Agriculture’s Plant Industries Section at (302) 698-4586. In Pennsylvania, they can call (866) 253-7189.

Stein Tree Service Provides Skilled EAB Treatment and Other Tree Care Services

certified arborist urges emerald ash borer awareness -Stein Tree Service

Stein Tree Service is the oldest independently-owned tree service company in Delaware. Our certified arborists and other tree care specialists are passionate about proper tree care and have been working to increase emerald ash borer awareness in local communities.

We perform all types of residential and commercial tree care, including tree trimming and pruning, right of way management, tree removal, and treatment of tree disease or insect infestation. Visit our site for more information or contact us for a free consultation.

Stein Tree Urges Emerald Ash Borer Inspections for NISAW

Feb 18, 2019 – Wilmington, DE – Local tree care company Stein Tree Service reminds Wilmington residents that next week, February 25 – March 1, 2019, is National Invasive Species Week (NISAW). The week is set by the nonprofit of the same name to encourage awareness of invasive plants and insects, such as the emerald ash borer (EAB) and the spotted lanternfly, that can negatively impact our plant life.

The emerald ash borer has been spreading across the United States since 2002 and was discovered in Delaware in 2015. The emerald ash borer primarily attacks ash trees, which flourish in the Delaware and Pennsylvania climates, but has recently been found to be attracted to fringe trees as well.

The spotted lanternfly is a threat to a variety of trees. The insect was found in Pennsylvania in 2014 and confirmed in Delaware in 2017. According to Delaware Online, the spotted lanternfly attacks trees such as the tree of heaven and walnut, and leaves oozing weeping wounds in the trees.

Events such as the NISAW help increase awareness of dangerously destructive creatures, which is critical to saving affected trees and preventing the spread. The emerald ash borer can cause such damage to an ash tree as to render it beyond saving within two years. The beetle consumes the nutrients of the tree, beginning with the inner wood under the bark as larvae, and then as adults, from the tree’s canopy.

If the emerald ash borer is discovered early enough, a professional tree care company may be able to save the affected trees. The key is to be vigilant, looking for any signs of the insect or of loss of vigor in your trees.

Signs of the emerald ash borer include:

  • D-shaped holes in bark
  • Excessive woodpecker activity
  • Galleries under the
  • Epicormic Sprouting
  • Crown Thinning

The spotted lanternfly may be hard to spot when on the trunk of a tree, because when its wings are closed, they are a greyish color that blends with the bark. When their wings are spread, they are a vibrant red color.

Both the emerald ash borer and the spotted lanternfly can be carried on firewood, so one campaign that the NISAW promotes is “Don’t Move Firewood.” The pests can be carried from place to place in firewood, so campers are encouraged to use only local firewood when camping.

The NISAW encourages awareness of all types of invasive species, but the emerald ash borer and spotted lanternfly are definite local threats that homeowners should be aware of. Stein Tree advises that early spring is a good time to schedule an inspection of the trees in your landscape to ensure that they are healthy and free of problematic issues.

About Stein Tree Service

Stein Tree Service is the oldest independently owned tree care service company in Delaware. The company is licensed to perform inspections and treat for emerald ash borer in Delaware and Pennsylvania. The professional certified arborists and specialists are dedicated to exceptional tree care, and has been serving the needs of local communities for over 30 years. For more information call 302-478-3511 or visit the company website at:

Possible Deregulation of Emerald Ash Borer Restrictions Means Homeowners Must Be More Vigilant

January 2, 2019 – Wilmington, DE – The emerald ash borer (EAB) is a threat to the ash, and some other varieties of trees, across the country. They spread easily from state to state, often by the transport of firewood from area to area. Regulations have been in place for years, which support efforts to identify EAB infestations and to enforce quarantines for affected areas. These quarantines attempt to prevent travelers from carrying infected wood from an area into another area, thus spreading the insect infestation.

Emerald ash borer beetle

The USDA Animal and Plant Health Inspection Service (APHIS) has proposed removing the quarantine requirements in order to allow more resources to be used in research and development of ways to combat the spread of EAB. This proposal would put an end to site visits and also turn the nation’s focus to attempting to kill the pest via biocontrol. This method involves introducing tiny stingless wasps that prey naturally on the emerald ash borer, to impacted areas. Some of these wasps are already being used, but the measure would call for more.

The public was allowed to comment on the proposal, and these comments are now under review before a final decision is reached. Many oppose the proposal, feeling that the quarantines, while imperfect measures, bring awareness of the problem, and in some degree, at least, help keep the emerald ash borer from being spread even more quickly. Some states without quarantines rely on them to keep travelers from bringing infested wood into their forests.

Stein Tree Service is one of the companies that has been trained and certified to treat for emerald ash borer in Delaware and Pennsylvania. They know how to identify the insect, and signs of an infestation, and recommend regular inspections in areas with ash tree populations. If the proposal goes through, homeowners will need to be even more diligent and proactive on their properties to avoid losing valuable trees to this destructive pest, as well as spread the word so that others are aware of the risks.

Signs of Emerald Ash Borer Presence

emerald ash borer thinning canopy

Though having regular inspections is recommended, homeowners can look out for these signs of infestation. If any of these issues are noted, call a certified arborist or other tree care specialist who can treat for the pest as soon as possible.

  • Thinning leaves at the top of the tree
  • S-shaped galleries under the bark
  • D-shaped exit holes
  • Splitting Bark
  • Excessive Sprouting Around Base of Tree
  • Large Woodpecker presence

Stein Tree Service is Licensed to Treat Emerald Ash Borer in Delaware and Pennsylvania

Chemical applications are sometimes needed to treat EAB and they can only be applied by licensed vendors. Stein Tree Service is licensed to apply the treatments for EAB and if a tree is unable to be saved, can perform necessary tree removal.

About Stein Tree Service

Stein Tree Service is the oldest independently owned tree service company in Delaware. The company has been serving homes and businesses in Pennsylvania, Delaware, and Maryland since 1983. For more information about available services or emerald ash borer presence, contact Stein Tree Service at or visit their website directly at

Avoid Spreading of Emerald Ash Borer and The Lone Star Tick When Camping This Summer

Emerald ash borer s shaped galleries - Wilmington DE

Wilmington, Delaware – July 2, 2018 – If you love camping, be careful about nature’s tiniest pests this year. Stein Tree advises care specifically with regard to the emerald ash borer (EAB) and the Lone Star Tick. One is a destructive pest whose spread needs to be controlled, and the other threatens physical harm to humans.

Emerald Ash Borer

Emerald Ash Borer infestation - Stein Tree Service

First, be aware that improper handling of firewood could cause the spread of invasive pests, such as the emerald ash borer (EAB). Stein Tree Service warns that the emerald ash borer is dangerous to ash and olive trees, 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 recommended generally anyway, to avoid introducing non-native insects to a site. However, the emerald ash borer is particularly harmful and destructive.
The emerald ash borer, was found in Delaware for the first time in August 2016. Emerald ash borer adult beetles lay eggs in summer,and begin hatching as larvae in the spring.

Some emerald ash borer signs are:

  • Thinning of the tree crown
  • Splitting Bark
  • Excessive Sprouting Around Base of Tree
  • Lingering Woodpeckers
  • S-Shaped Patterns in Trunk
  •  D-Shaped Exit Holes

Delaware State Parks mandate that campers refrain from bringing out of state wood into Delaware. Please follow all guidelines to protect Delaware’s trees.

Lone Star Tick

Campers and hikers are urged to be vigilant about checking for ticks this year. The Lone Star tick, also responsible for Rocky Mountain Spotted Fever, has also been discovered to cause another health issue: alpha-gal allergy, or allergy to red meat and dairy.

The allergy can cause dangerous, even life-threatening reactions within 6 hours of when the afflicted person ingests red meat (including pork) or sometimes dairy products. Dr. Scott Commins, one of the first doctors to identify the allergy associated with the Lone Star tick, estimates that over 5000 cases exist in the U.S. Fortunately, some patients do outgrow the allergy over time, but the best course of action is to be careful and check for ticks after outdoor activities. After spending time in grassy areas, check your shoes, clothing hair and body for ticks.

The Lone Star tick, which is being found further and further north, is a threat to campers themselves. The emerald ash borer is a threat to trees and therefore the economy. Stein Tree Service advises Delaware residents to enjoy the summer weather, while being aware of surroundings and rules when camping or spending time outdoors.

About Stein Tree Service

Stein Tree Service is the oldest independently owned tree care service in Delaware. Their Certified Arborists and other tree care professionals are dedicated to ensuring residential and commercial tree health. For more information about available services or the emerald ash borer threat in Delaware, contact Stein Tree Service at 302-273-1583 or visit their website directly at

What is the Emerald Ash Borer? A Serious Threat to Your Ash Trees

Emerald ash borer (EAB) is becoming a more common term in our communities, as procedures are put into place in Pennsylvania communities, like other US communities, to combat its threat. Stein Tree offers some information to inform homeowners of the potential threat and enable you to prepare and protect your ash trees.

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Stein Tree Service Advises that Emerald Ash Borer Awareness Week is May 20-26, 2018!

Wilmington, DE – May 10, 2018 – Homeowners across the United States need to be wary of an emerald green invasive pest that could destroy their ash trees. Emerald Ash Borer Awareness Week, being recognized May 20-26, 2018, helps increase awareness of the threat and advises homeowners of the signs that trees could be infested.

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