Q.crepe myrtle tree problems
My pink crepe myrtle tree’s leaves are turning yellow at an alarming rate and also all the leaves have a wet sticky surface on them. What do I need to do to fix this problem? Thanks.
The wet sticky residue is most likely honeydew secreted by sucking insects like aphids, scales, and white flies that feed on the leaves. This is likely the reason for your yellowing leaves as well. Most likely you have aphids. I would treat the tree with neem oil. This will kill the pests without harming people, pets or beneficial bugs. Here is more information:
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm