Honeylocusts are a popular tree in Denver and the Front Range. However, dry winters, hail damage, late spring freezes, and insect infestations are causing noticeable damage. For example, thinner canopies, branch dieback, and less leafing-out are evidence that stressors are taking their toll on these great trees. But, homeowners with mature Honeylocust trees in their yards should take comfort in knowing that Ross Tree Company is here to help. If you notice your Honeylocust is in peril, call us to schedule one of our Certified Arborists to come out and determine the best plant care regiment to improve the health of your Honeylocusts.

Structural Pruning and Winter Watering

Common first steps that Ross Tree takes to care for Honeylocust trees are pruning and watering. For instance, we’ll prune mature trees to remove dead wood and cut the branches back to their strongest point. Specifically, this will promote healthy growth and help the trees withstand Denver’s heavy snow storms. This type of pruning, known as structural pruning, should be done by September for best results. In addition, Honeylocusts should be watered throughout the year with water applied around the tree’s drip line. This is particularly important when Denver has a dry winter.

Honeylocust Pod Gall Midge Fly

All Honeylocust species are susceptible to a destructive fly known as the Pod Gall Midge. First, the larvae of the Honeylocust Pod Gall Midge Fly cause distortions on new Honeylocust leaflets. These distortions, or galls, make the leaflets curl up to form pods for the larvae to grow in. If the galls are opened, several cream-colored larvae may be found. Then, when the adult midges emerge, the galls drop, causing tree damage. Another key point is that the Pod Gall Midge produces multiple generations each summer, and, in extreme cases, can destroy all new tree growth. Unfortunately, treatment can be tricky since the midge produces several generations each season. Homeowners concerned about the health of their Honeylocust trees should contact a Ross Tree Certified Arborist for advice.

Ross Tree Company has two ISA Certified Arborists with a third being added this year. Moreover, we have three Qualified Supervisors (QS) licensed by the Colorado Department of Agriculture to handle pesticide products. And, don’t worry, Ross Tree will only use the products necessary to treat for Pod Gall Midge and nothing more.