Sap dripping from trunk of a Douglas fir tree - Ask Extension
Jun 27, 2016 · Sap dripping from Douglas-fir trees is a common symptom with a variety of possible explanations. This symptom is often referred to as "resinosus". One or just a few high-volume resin …
Black Cherry Tree - Ask Extension
Nov 17, 2015 · The bark splits because the living tissues under the bark (xylem, phloem, and cambium) are damaged or dead and can no longer expand when the rest of the tree grows. Contact herbicides …
Is it too late to use dormant oil spray on crape Myrtle? - Ask Extension
Apr 20, 2025 · You can learn more about how to use horticultural oil on the linked page. There are other insecticide options for controlling Crapemyrtle Bark Scale, but they increase in toxicity and may run …
A male deer rubbed his antlers on my young maple. I'm wondering if it ...
Oct 6, 2020 · Bucks like to rub their antlers on young trees, causing extensive damage to the bark, which often results in a slow death for the tree. Protecting trees from damage is essential in areas …
How to save a tree after deer damage - Ask Extension
Sep 12, 2020 · The bark on a flowering crab in the front yard was damaged by deer rubbing. Never happened before. About 3 inch diameter trunk. Don’t know if this one incident will kill the tree. Any …
How to repair tree damage caused by deer - Ask Extension
Sep 2, 2021 · Our 5" in diamater maple tree was ravaged by deer antler rubbing. It is on one side of the tree, bark is shredded in approx 1/4 of the trunk. How best to help the tree heal?
weeping willow - Ask Extension
Aug 12, 2014 · There are some cracks in the bark and some of the bark around the trunk seems to be "shedding". I am sending 8 pictures, one at a time since I can't use a zip folder on your site.
Viburnum bark damage - Ask Extension
Apr 4, 2021 · Sometimes similar looking damage can arise from the scarifying activity of European hornets, which also carve out large patches of bark on the stems and branches of ornamental trees …
Large bees eating river birch - Ask Extension
Sep 1, 2019 · Those are European Hornets. They strip bark from river birch and other preferred trees (such as lilac) to make their nests and obtain nourishment from the sap. They make their nests in a …
Crape Myrtle Bark Scale - Ask Extension
Sep 8, 2025 · Our crape myrtle is infested with crape myrtle bark scale. Two different reputable tree companies have recommended using a systemic pesticide now and ...