A plant shoot (4)
I believe the answer is:
rush
I believe this clue is a double definition.
'a plant' is the first definition.
(rush is a kind of plant)
'shoot' is the second definition.
(thesaurus)
(Other definitions for rush that I've seen before include "candle" , "Sudden demand for product" , "Move hastily; plant" , "something for basket" , "Stampede - water plant" .)