Got Moths? Your Trees Might be in Danger


Moths of different types find food and shelter in various places in the home. Some nest in carpets while others infest clothes closets and creating significant damage.
However, outside your home, another type of moth, winter moths seek out hardwood trees to infest. Between November and January, they find homes in trees and their larvae feed on the developing leaves in the spring, causing noticeable defoliation of the trees as summer approaches. Over several years, the tree will eventually die.
Where is Winter Moth Prevalent?
According to the National Institute of Health, winter moths originated in Europe and spread to North America. Their infestation is most prominent in the Northeast section of the United States although other areas have experienced the problem. The outbreak causes severe damage to tree varieties that include oak, maple, ash, elm, beech, fruit-bearing trees and more.
Symptoms of Winter Moth Damage
Presence of the moth larvae is usually not detectable until the leaf bud opens to reveal small feeding holes. Eventually, new caterpillars descend to the ground on silken threads to start the process again in late fall.
Treatment for Winter Moths
Chemical injections in late fall or early spring before the buds begin to break is the best time to prevent winter moth infestation. The impact of these injections is most significant if the soil has adequate moisture during application. After treatment, the larvae should die. The trees should be closely monitored to determine if an additional application is needed.
An interesting approach to eliminating winter moth infestation was cited in a Newport This Week article in January 2017. The strategy to resist a severe outbreak was to introduce a type of fly that loves eating winter moths. The long-term plan is for the fly population to become established and act as a control agent. However, this natural process, effective in Nova Scotia, may take up to 10 years to control the winter moth population here.
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Heritage Oak Farm has developed a full line of their easy-to-use tree and plant equipment for nurseries, tree farms, and professional landscapers. One favorite product, ProLine Pot Handler™, is designed to gently handle and transport tree and shrub pots up to 40” in diameter.
Visit the ProLine website to view their time and money saving equipment. For answers to your questions, call 1-888-288-5308.


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