Why do autumn trees of the same species change colour at different times?

Question

I don’t mean differing tree types, but trees in the same woodland, of the same species, can be in completely different stages of shedding- how come? Why do they not all loose their leaves around the same time?

In: Biology

Answer 1

Not all trees in the same wood have the same environment. Some may be on drier or wetter ground, or be exposed to more or less direct sunlight. This can effect their triggering process.