Writer Jong (5)
I believe the answer is:
'writer jong' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for erica that I've seen before include "growing up on the moors" , "Plant genus of garden heather" , "Shrub genus; girl's name" , "Moorland plant, girl's name" , "found on the moors" .)