Something shady, one concedes? (5)
I believe the answer is:
bower
I believe this is a double definition.
'something shady' is the first definition.
(shady part of a garden)
'one concedes?' is the second definition.
(as in someone who bows to pressure)
(Other definitions for bower that I've seen before include "Leafy shelter" , "greenery?" , "Shady retreat" , "Leafy recess" , "Arbour" .)