Plant beginning to suffer after climate change (8)
I believe the answer is:
clematis
'plant' is the definition.
(type of plant)
'beginning to suffer after climate change' is the wordplay.
'beginning to' says to take the initial letters.
'after' is a charade indicator (letters next to each other).
'change' indicates an anagram.
The first letter of 'suffer' is 's'.
'climate' is an anagram of 'clemati'.
's' put after 'clemati' is 'CLEMATIS'.
(Other definitions for clematis that I've seen before include "Climber's" , "Buttercup relative" , "Old man's beard" , "flower" , "Climates (anag)" .)