Cancel my orders for plant (8)
I believe the answer is:
cyclamen
'plant' is the definition.
'cancel my orders' is the wordplay.
'orders' indicates an anagram.
'cancel'+'my'='cancelmy'
'cancelmy' anagrammed gives 'CYCLAMEN'.
'for' is the link.
(Other definitions for cyclamen that I've seen before include "Small flower with tuberous roots" , "Perennial" , "Common house/garden plant" , "Plant with turned-back petals" , "Common house plant" .)