In most ways, palm trees are incredibly low-maintenance. They don’t need a ton of water—which is why they’re so beloved in desert regions—and they basically prune themselves. But they do need an ample supply of sunlight and to be in soil that will allow for proper drainage so that their roots don’t become waterlogged and at risk of developing illnesses.

If the plant begins to wilt, develop spots, or change color, these could all be signs that your palm tree has a disease. But a few basic treatments, like pruning and applying fungicide, will usually be more than enough to return it to perfect health.

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.

Most trees can be successfully transplanted while they are young, but pines, walnuts, and some oak tree varieties are more difficult to move because their root systems grow deeper than most other trees. Also, trees adapted to sandy soil with wide root systems like beeches, willows, and aspens are harder to dig out because their roots spread much farther out from the trunk. In these cases, unless the trees are very young and small, it’s a good idea to consult a tree planting professional.

Any tree that needs to be pruned should be pruned to remove dead branches at least once a year. You may need to prune far more often if you’re trying to maintain a certain shape or to save a tree that suddenly becomes infected.