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Dead tree branches should be removed, because they can cause the tree to lose nutrients. They can also make the tree more susceptible to disease and pests. Removing dead and diseased branches can help the tree recover and increase the odds of saving a dying tree. Make sure to prune the tree correctly to avoid damaging it further.

In most cases, you should not use a pruning seal on trees after trimming. Applying a sealant can interfere with the tree's natural healing process, and it does not guarantee protection from pathogens. Instead of sealing the cut, the best practice is to support the tree's natural recovery by providing it with plenty of water and a dormant-style fertilizer. However, there are exceptions. Pruning seals may be recommended for very vulnerable species, like elm trees, in areas where dangerous diseases such as Dutch elm disease are prevalent. In these specific situations, the protection offered by a sealant can outweigh its downsides. For advice tailored to your situation, especially after cutting large branches, it is best to consult a local tree trimming professional.

If you ever want to see the literal fruits of your labor, you’ll need to prune your peach trees. Without pruning, the trees may not grow or bear fruit since the nutrients will be divided among too many offshoots to provide any with enough energy to produce the peaches. Plus, if parts of the peach tree become diseased or pest-ridden, pruning can nip those problems in the bud.

If it’s only a smaller branch that has died and you’re keeping an eye on the tree, it’s probably nothing to worry about. But if other nearby branches start dying off as well, or a very large branch dies, then you likely have a bigger problem. It’s time to watch for diseases and other problems and possibly get professional guidance on how to proceed.