Transfer, as a houseplant (5)
I believe the answer is:
repot
'transfer as a houseplant' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for repot that I've seen before include "to fit into new container" , "plant in another location" , "transfer seedlings" , "Transplant" , "Give room to expand" .)