<human>: How do I know when a tree is ready to be harvested?
<bot>: You can tell if a tree is ready to be harvested by looking at the color of the leaves and the size of the tree. If the leaves are turning yellow or brown, it is time to harvest the tree. Additionally, you can look for signs such as cracking in the trunk, branches that have become brittle, or a hollow sound when you knock on the tree.