Survive in part of garden that's blooming! (7)
I believe the answer is:
blasted
'blooming' is the definition.
(thesaurus)
'survive in part of garden' is the wordplay.
'survive' becomes 'last' ('last' can be a synonym of 'survive').
'in' means one lot of letters goes inside another.
'part of garden' becomes 'bed'.
'last' inserted inside 'bed' is 'BLASTED'.
'that's' acts as a link.
(Other definitions for blasted that I've seen before include "Flipping" , "Like the heath in Macbeth" , "Blown up" , "darned" , "Damned" .)