Our hydrangea’d turned out rudely vigorous (5-3-5)
I believe the answer is:
rough-and-ready
'rudely vigorous' is the definition.
'our hydrangea'd turned out' is the wordplay.
'turned out' indicates an anagram.
'our'+'hydrangead'='ourhydrangead'
'ourhydrangead' is an anagram of 'ROUGH-AND-READY'.
(Other definitions for rough-and-ready that I've seen before include "Lacking refinement but serving a purpose" , "Easily improvised" , "Hastily prepared, but adequate" , "Crude - unpolished" , "Unrefined" .)