Unpopular, but usually accommodating growth (7)
I believe the answer is:
arbutus
'accommodating growth' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'unpopular but usually' is the wordplay.
'ARBUTUS' is hidden in amongst the letters.
But, I am not sure how this is indicated.
Can you help me to learn more?
(Other definitions for arbutus that I've seen before include "Evergeen" , "Strawberry-tree" , "But Ursa could become a strawberry tree" , "Evergreen tree or shrub with strawberry-like fruits" , "Plant" .)