Germinate (6)
I believe the answer is:
sprout
'germinate' is the definition.
(I know that germinate can be written as sprout)
This is all the clue.
(Other definitions for sprout that I've seen before include "Start growing" , "Produce shoots; vegetable" , "Put out shoots for the vegetable" , "Small cabbage from Brussels?" , "Produce new growth" .)