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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.

Only trim palm trees as needed, which is usually about once per year. However, don't stick to that schedule if the palm tree doesn't need it. Avoid trimming palm trees when possible. It’s best to trim palm trees only when you notice a buildup of dead fronds. That said, leave the brown fronds during the dormant season because this organic matter helps protect the tree from the cooler weather.

If you’re buying a small tree with lots of room to grow, expect to pay around $100 to $200 for a potted version. But if you’re buying a larger tree—say one over 10 feet—prices rise, starting in the $500 to $600 range and increasing quickly from there. Keep in mind that paying for professional palm tree planting or transplanting services will increase the cost.

Pruning can impact cold hardiness—but it’s less about the exact temperature and more about temperature variation. Generally, you don’t want to prune trees when there’s a risk of temperatures suddenly dropping from 50 to 60 degrees Fahrenheit to 0 degrees Fahrenheit or below. A tree is most sensitive until 48 hours after it’s pruned.