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Effective Fire Blight Treatment
The disease affects Apple, Crabapple, and Pear trees. In 2021 our Master Arborist stated, “The epidemic ended in April when the air temperature dropped to five degrees while disease had moved to cankers on branch surface to spread, killing much of it.”
Fire Blight attacks trees with pome fruits, which are members of the plant family Rosaceae. The fruits of these trees have a “core” of several seeds encased by a tough membrane. Surrounding this membrane is an edible layer of flesh like in Pears and Apples. Symptoms include:
Branch tips bend into a “shepherd’s crook”
- Brown leaves
- Black bark or cankers
Plum, Peach, and other Stone fruit trees are immune.
DLC Arbor treats Fire Blight by using a combination of trunk-injected antibiotics, low-nitrogen fertilizers, and sanitation pruning. DLC Arbor can start treatment as long as there are still leaves on the tree. In the winter, we cut out affected branches and other parts with cankers. When more than 40 percent of the tree is infected, we recommend tree removal. For an appointment, please fill out the tree service request form at the bottom of this page or give us a call at 303-378-8000.