Drop something in the garden (4)
I believe the answer is:
seed
I believe this clue is a double definition.
'drop' is the first definition.
(I've seen this before)
'something in the garden' is the second definition.
(I've seen this before)
(Other definitions for seed that I've seen before include "Pip for sowing" , "something in the garden" , "who is ranked highly" , "Race" , "Pip; origin, beginning" .)