Places with few grasses or leaves (7)
I believe the answer is:
deserts
'leaves' is the definition.
(to desert someone is to leave them)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for deserts that I've seen before include "They may be just" , "Kalahari and Gobi" , "Walks out on" , "Barren tracts" , "Areas like the Sahara" .)