Paintings of cress growing wild (7)
I believe the answer is:
frescos
'paintings' is the definition.
The definition and answer can be both acts as well as being plural nouns.
Maybe you can see a link between them that I don't see?
'of cress growing wild' is the wordplay.
'growing wild' indicates an anagram.
'of'+'cress'='ofcress'
'ofcress' with letters rearranged gives 'FRESCOS'.
Can you help me to learn more?
(Other definitions for frescos that I've seen before include "Murals done on wet plaster" , "Art" .)