“I'm extremely happy with the work your Tree & Shrub technician does. I've never had one, from a previous company, that has been as thorough as him.”

—John P. - Lancaster, PA

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Insect and Mite Control

spraying japanese beetles or injecting for japanese beetlesThere are thousands of pests that can feed on trees and shrubs in an ornamental landscape. Our tree experts know how to identify which specific tree insects and mites are active or could be potential problems to your plants, and will build a custom program to target them at key times during the year. This may be accomplished by spray applications, soil injections, and cultural recommendations for your landscape.

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Why Choose Tomlinson Bomberger to care for your trees?

Best of and ReadersTomlinson Bomberger has been consistently Voted #1 Tree Service by the readers of Lancaster County Magazine and Lancaster Newspapers.

Certified Arborist LogoOur company employs numerous ISA Certified Arborists to provide you with the best advice and treatment plans for Plant Health Care and Pruning of trees large and small, as well as shrubs and hedges. We would welcome the opportunity to assess your landscape for recommendations.

Aphid Control

aphidsThese small insects can be white, black, brown, and other colors. Aphids will pierce and suck leaves and stems of trees and shrubs and extract valuable nutritional resources. Spraying for aphids will provide some effective, immediate control. However, if aphids are a chronic problem for a plant, the use of some systemic injections will help trees and shrubs that are prone to aphid damage. This material remains in the plant for the majority of the growing season while aphids are active, making it a preferred control method.

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Japanese Beetle Control

japanese beetleBeetles will start to appear in late June and begin chewing on leaves of shrubs such as Roses, Crape Myrtles, and more. Trees such as Lindens, Birches, Purple Plum and more are also prone to Japanese Beetle Damage. Spraying for Japanese Beetles can provide some immediate, but limited relief of these pests. When combined with performing systemic soil injections for Beetles can help to drastically reduce this insect damage on your property.

Hemlock Woolly Adelgid Control

hemlock woolly adelgidHemlock trees are beautiful, but require regular treatments for insects and mites. Not only is our State tree prone to Hemlock Rust Mites and Elongate Hemlock Scale, but it is most frequently damaged by Woolly Adelgid. This insect appears as small, cottony balls on the undersides of Hemlock needles. When looking under magnification, you can see how this insect attaches itself to Hemlocks and severely damages these trees to the point of eventual death. Spraying Hemlocks and performing systemic soil injections for Woolly Adelgid can keep your trees looking beautiful for years.

Spider Mite Control

two-spotted spider miteEvergreens such as Spruces and others often become damaged because of very small mites that feed on the plant. These extremely small pests often go unnoticed as they need to be viewed under magnification. Because mites that feed on trees are prolific breeders, their populations can become very high in a short period of time, causing substantial damage and even death for trees. Spraying mites on trees in your landscape throughout the season at crucial times can help to reduce this pest’s numbers to keep your plants looking great.

Scale Insect Control

scale on branch with antsScale insects often are not recognized because they don’t appear as typical insects. These insects are often noticed in their larger adult forms as they appear like bumps, flecks, or growths on leaves and stems of trees, shrubs, and groundcover such as pachysandra. These pests can severely damage plants as they extract essential plant nutrients out of stems and leaves. The honeydew (excrement) of this insect often attracts stinging insects in the summer months as well as black sooty mold can be prone to grow on this left behind material, inhibiting photosynthesis. Spraying for scale on trees and shrubs as well as soil injections for some types of scale will help to reduce populations of this ornamental pest.

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Bagworm Control

bagworm casingBagworms get their name from constructing bag-like protective casings around themselves as they feed on a variety of trees and shrubs, although primarily found on evergreen trees such as Spruces, Leyland Cypresses, Pines, and more. Spraying for Bagworms in early summer can both proactively and preventatively treat for this highly destructive pest.

Lace Bug Control

Lace Bugs get their name from their small, delicate, lace-like wings. These small insects feed on a variety of trees and shrubs, but are most commonly found on Azaleas, Pieris, and Cotoneaster shrubs. Since they feed primarily on the undersides of leaf tissue, it can be challenging to spray for Lace Bugs. Combining spraying with a soil injection for Lace Bugs can help to manage populations and keep your plants looking great.

Caterpillar and Webworm Control

tent caterpillarsThese common larvae hatch at different times of years on different trees in our areas. Tent Caterpillars, Webworms, and Gypsy Moth larvae are the most frequently noticed of this type of pest in our areas. These larvae can damage trees in a very short period of time as they feed on its foliage. Spraying for tree caterpillars such as these is a very effective in control.

Emerald Ash Borer Control

emerald ash borerThe larvae of this pest have been destroying trees in the U.S. since 2012 and has rapidly spread across 15 states killing tens of millions of large Ash trees. This pest was first spotted in our area in spring of 2015 and will become a major problem in the years to come. Studies have shown that treating Ash trees with less than 30% damage can drastically prolong the life of your Ash tree. Our company performs trunk injections for trees larger than 10″ in diameter and soil-applied treatments for smaller trees until they are larger.

Other Borer Control

borer damageThere are dozens of kinds of Borers that feed on trees and shrubs in our area. Wood-boring insect larvae such as Bronze Birch Borer, Bark Beetle larvae, Dogwood Borers, Lilac Borers are just a few of these we frequently find damaging trees. These highly-destructive pests often feed on previously unhealthy trees and commonly cause the death of the tree. Some Borers can be treated preventatively by spraying for Borers or performing injections. Keeping trees healthy is typically the primary defense.

Leafminer Control

holly leafminerLeafminers are small larvae that feed inside of leaves of trees and shrubs such as Boxwoods, Hollies, Birches and other plants in our area. Spraying for leafminers is minimally effective as the material needs to penetrate into where these insects are feeding. It is for this reason soil-applied injections for leafminers do a great job controlling this pest as it circulates throughout the plant where they are feeding.


There are many other pests that damage trees and shrubs in landscapes. If you are unsure of a what is causing your trees and shrubs to look unsightightly, our team has experience and expertise to diagnose these problems and to create a custom-built Plant Health Care program for your property.

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