Intertwine funeral flowers with last of foliage (7)
I believe the answer is:
wreathe
'intertwine' is the definition.
(I know that wreathe is a more specific form of the action intertwine)
'funeral flowers with last of foliage' is the wordplay.
'funeral flowers' becomes 'wreath' (as in a funeral wreath).
'with' says to put letters next to each other.
'last of' indicates one should take the final letters.
The final letter of 'foliage' is 'e'.
'wreath'+'e'='WREATHE'
(Other definitions for wreathe that I've seen before include "(E.g smoke) curl" , "Move in a twisting way" , "Intertwine, curl round" , "wind" , "Encircle with flowers" .)