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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.

To maintain trees on a commercial property, perform regular pruning, monitor for diseases, and apply fertilization to promote healthy growth. It is also important to remove any hazardous branches to keep the trees healthy and prevent potential liability issues.

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.

It depends on where you live—but in most areas, leaves begin falling in September and continue falling until January or February. Warmer regions, such as Southern states, may see leaves fall a bit later in the calendar year. It also depends on the type of trees in your yard and their maturity.