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According to scientists at Penn State University, spotted lanternflies do not typically kill the trees and plants they feed on, but they can cause branches and segments to die off. However, they have been found to kill cultivated grapes, which can have devastating consequences for vineyard owners and regions that heavily rely on vineyards to create jobs and generate revenue. They have also killed the Ailanthu altissima, known as the tree of heaven, though this is classified as a noxious and invasive weed tree.

Using Epsom salt to kill a tree stump typically takes between six and 12 months. While this may seem like a long time, it is significantly faster than the natural decomposition process, which can take up to seven years. This method is a viable DIY option for stumps that do not pose an immediate hazard. If you need a faster solution, you can hire a professional for stump removal or grinding, though this may cause more damage to the surrounding ground.

Since overwatering can harm mature trees just as much as a lack of water, it’s important to know the signs of an overwatered tree. If your tree’s leaves are yellowing, wilting, or dropping leaves, it’s likely that you’re overwatering. Other common signs include rotting, fungi, soggy soil, soft or peeling bark, falling leaves, and brittle roots. 

If you realize that you’ve been overwatering your mature tree, stop watering and give the soil time to dry out. Then moving forward, increase time between watering sessions. 

Most experts recommend removing a tree that has sustained more than 25% loss in the limbs, trunk, or circumference of the bark. Doing an initial trimming of damaged and dangling branches, but then waiting a few days of monitoring to decide how much more you might need to cut can help you better assess the total damage to the tree. However, consulting a tree maintenance pro to make this determination the best course of action before removing a tree.