Large spruce (4)
I believe the answer is:
tidy
This clue is a double definition.
'large' is the first definition.
(as in a tidy sum of money)
'spruce' is the second definition.
(similar in meaning)
(Other definitions for tidy that I've seen before include "Neat, ordered" , "Neat - container for odds and ends" , "In good order" , "Neaten" , "Well-groomed" .)