No trees in space 🙂 They would need water, carbon dioxide in the right amount, and nutrients from soil to be able to survive. So no, not even a bonsai tree.
Helen is right, trees can’t grow in space.
However they can grow in space stations, and apparently they have tried this with cherry trees! Something I didn’t know! http://www.asc-csa.gc.ca/eng/sciences/apex.asp
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