Touring bottom of garden, is unlikely to find plant (7)
I believe the answer is:
install
'plant' is the definition.
'touring bottom of garden is unlikely' is the wordplay.
'touring' indicates putting letters inside (touring can mean going round).
'bottom of' indicates one should take the final letters.
'unlikely' becomes 'tall' (I've seen this in other clues).
The final letter of 'garden' is 'n'.
'n' going within 'is' is 'ins'.
'ins'+'tall'='INSTALL'
'to find' acts as a link.
(Other definitions for install that I've seen before include "place in office" , "Put in place ready for use" , "Fix (equipment) in position" , "Place (something) in its working position" , "Load up" .)