How do I know if a tree is dead?
How do I know if a tree is dead?
user
In the wild, trees can be dead for a variety of reasons.  In a city, if a tree is losing its leaves, that means the tree isn’t healthy.  If the tree’s bark is peeling, that could mean there is a fungus infection.  In urban areas, if you see a tree with brown, dry leaves, that may mean it’s dying.
assistant
What if it's autumn though? Lots of trees lose leaves for winter.
user
Fall is the season when trees stop producing new leaves.  During this time, trees lose their leaves to prepare for the winter, and not because they are sick.  It is possible that some trees lose their leaves early or in bigger quantities in the fall than others, but you can use this as a guide.
assistant
Okay, give me more advice as to how I know it's dead.
user
Trees that are still growing will have green leaves.  When they die, the green parts of the tree will slowly turn brown and then brownish-black.  When you look closely you will be able to see all the wood cells are dead.   Also the sap in trees will stop flowing.
assistant
All right, I'll check that out.
user