Damson cultivated by wanderers (6)
I believe the answer is:
nomads
'wanderers' is the definition.
(I know this)
'damson cultivated' is the wordplay.
'cultivated' indicates anagramming the letters.
'damson' is an anagram of 'NOMADS'.
'by' acts as a link.
(Other definitions for nomads that I've seen before include "Itinerants" , "Travellers" , "Damson consumed by rovers" , "Gypsies" , "They wander" .)