Is it natural to use the possessive adjective in "their olive trees"?

Question

Does the following sentence sound natural? >1. They harvest their olive trees in autumn. Can I say: *their* olive trees or does it sound more natural without "their"? >2. They harvest olive trees in autumn.

Answer 1

It depends on the context. Any of the three can be used:

They harvest olive trees in autumn.

They harvest the olive trees in autumn.

They harvest their olive trees in autumn.