Desert's fertile spot (5)
I believe the answer is:
oasis
(Other definitions for oasis that I've seen before include "Green spot; rock group" , "Safe haven" , "source of water" , "retreat" , "English rock group in the desert" .)
I believe the answer is:
oasis
(Other definitions for oasis that I've seen before include "Green spot; rock group" , "Safe haven" , "source of water" , "retreat" , "English rock group in the desert" .)