Tip#2: Avoid fertilizing affected trees with standard “off the shelf” products. Use of high nitrogen fertilizer stimulates new growth on which the insect thrives, and can actually cause an explosive increase in the pest population. After the pest is brought under control, Schoeni recommends using an organic biostimulant, such as ArborKelp® that will enhance root growth rather than encourage new stems and needles.
Tip#3: Move bird feeders away from hemlocks to other locations in the yard. A tiny insect, the adelgid is dispersed by wind, birds and mammals. Repositioning bird feeders to other trees is an easy way to help contain potential infestation.
Tip#4: Give your hemlocks good growing conditions. This can be as simple as making sure trees are watered thoroughly. Since hemlocks have shallow roots, they are prone to drought stress. This is particularly true of newly planted trees, whose root systems haven’t fully developed. An inch of water per week, including rainfall is sufficient.
Tip#5: If you spot trouble, contact a certified arborist right away to arrange for a management program. Arborists can recommend treatments, such as the application of horticultural oil or the introduction of systemic compound into the roots of the infested hemlocks.
About SavATree: This premier tree, shrub and lawn care company has been providing environmentally sensible tree, shrub and lawn care to residents, businesses and historic properties for over 20 years. They currently operate in Connecticut, Massachusetts, Maryland, New Jersey, New York, Pennsylvania and Virginia, and Washington D.C. Industry certified arborists provide clients with expertise in tree care and help clients maintain a healthy, safe and beautiful landscape. Services include pruning, disease diagnosis, removal, insect and mite treatments, organic lawn care, integrated lawn care and more. For more information, please contact us.