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Yes, cutting a tree's roots can cause it to fall, particularly if major support roots are severed. In extreme cases, trimming roots can affect the tree's structure and stability. Many crucial roots are located just below the soil's surface. If you make severe cuts to roots more than 2 inches in diameter, you risk impacting the tree's water flow and its ability to withstand severe winds or storms. Even cutting roots less than half an inch in diameter under or outside the tree's canopy can cut off its water supply, causing it to decline, die, and eventually topple.

Generally, you’ll want to avoid pruning more than 25% of the tree’s canopy at one time. While pruning your tree is important, it’s possible to do it too often or to go too far. Again, this is why hiring a tree trimming pro to do the work is wise. However, if you do decide to DIY, going slow and trimming gradually is the name of the game.

Using Epsom salt to kill a tree stump typically takes between six and 12 months. While this may seem like a long time, it is significantly faster than the natural decomposition process, which can take up to seven years. This method is a viable DIY option for stumps that do not pose an immediate hazard. If you need a faster solution, you can hire a professional for stump removal or grinding, though this may cause more damage to the surrounding ground.

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.