I landed awkwardly on a plant (9)
I believe the answer is:
dandelion
'a plant' is the definition.
(dandelion is a kind of plant)
'i landed awkwardly on' is the wordplay.
'awkwardly' indicates an anagram.
'i'+'landed'='ilanded'
'ilanded' with letters rearranged gives 'dandeli'.
'dandeli'+'on'='DANDELION'
(Other definitions for dandelion that I've seen before include "Flower with a "clock"" , "I nod, laden with yellow flower" , "Common yellow-flowered plant" , "salad leaves" , "Common yellow-flowered weed" .)