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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.

Yes, carefully prune back dead branches—don’t wait for pruning season. This helps keep your maple tree healthy and also helps prevent large branches from falling unexpectedly. Don’t seal the cut branch—trees can naturally take care of these wounds—but be sure to remove any source of fungus or pest infestation to help save the tree.

The best way is to start controlling tree height long before it grows too large, via careful pruning through the years. But that’s not always possible. If a tree has become too high or too large, use selective pruning to remove the most troublesome branches, one by one, without topping the tree. Gently shaping a tree like this can, over time, correct problems. You can also find growth inhibitors to spray on a tree to stop it from growing too rapidly, but use these sparingly if at all.

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.