To begin with, Chelsea fan weed on the turf? (6)
I believe the answer is:
clover
'weed on the turf?' is the definition.
The definition and answer can be both plants as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'to begin with chelsea fan' is the wordplay.
'to begin with' indicates taking the first letters.
'fan' becomes 'lover' (synonyms).
The first letter of 'chelsea' is 'c'.
'c'+'lover'='CLOVER'
Can you help me to learn more?
(Other definitions for clover that I've seen before include "Wild three-leafed plant" , "Pasture plant" , "A four - leafed one is for luck (6)" , "Trifolium" , "Common trefoil" .)