Stunted growth in small vineyard with beginning of blight (5)
I believe the answer is:
scrub
'stunted growth' is the definition.
(I've seen this before)
'small vineyard with beginning of blight' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'vineyard' becomes 'cru' (I've seen this in another clue).
'with' says to put letters next to each other.
'beginning of' indicates taking the first letters.
The initial letter of 'blight' is 'b'.
's'+'cru'+'b'='SCRUB'
'in' acts as a link.
(Other definitions for scrub that I've seen before include "Scour - stunted trees" , "Rub hard; brushwood" , "poor growth" , "Discontinue" , "Wipe out" .)