Some fast-acting products can rot a tree stump in four to six weeks. Keep in mind, these products contain harsh chemicals that may prevent regrowth in the area. Other products, like fertilizer that contains lots of nitrogen, can enhance the process and rot a stump in about a year. (This is compared to the ten years it can take naturally for a stump to rot.)

While the fastest way to kill a tree is to simply cut it down, there are several other methods to choose from. You should hire a professional tree removal service to cut down a tree to ensure your personal and property safety. Some slower but effective options include treating or grinding the tree stump or using a basal bark treatment. 

The safest way to cut down a tree is to make sure you’re completely prepared and have done all the necessary safety checks, including double-checking your equipment is in good working order, you have plenty of clearance to fell the tree, you’re wearing all the safety gear, and you have a partner to help you (who should also be wearing safety gear). 

The ideal time to prune a tree depends on the type of tree. Typically, late winter or early spring is a good time to prune but isn't always the case for "towering trees." It's best to trim when trees are dormant and before blooms appear but can vary depending on the tree type. It's always best to research the type of tree or ask a professional tree trimmer to determine when is the perfect time to prune your tree.