Peanut I fancy as a flowering plant (7)
I believe the answer is:
petunia
'a flowering plant' is the definition.
(petunia is a kind of flowering plant)
'peanut i fancy' is the wordplay.
'fancy' indicates an anagram.
'peanut'+'i'='peanuti'
'peanuti' anagrammed gives 'PETUNIA'.
'as' acts as a link.
(Other definitions for petunia that I've seen before include "Common bedding plant" , "Garden plant with large funnel-shaped flower" , "Flowering plant" , "Flower much used in hanging baskets" , "Colourful" .)