Yes, a wild gale can actually help on the farm! (6)
I believe the answer is:
silage
'actually help on the farm' is the definition.
I can't tell whether this defines the answer.
'yes a wild gale' is the wordplay.
'yes' becomes 'si' (I can't explain this - if you can you should give a lot more credence to this answer).
'a wild' is an anagram indicator.
'gale' with letters rearranged gives 'lage'.
'si'+'lage'='SILAGE'
'can' is the link.
Can you help me to learn more?
(Other definitions for silage that I've seen before include "Fermented feeding stuff for cattle" , "Fodder in store" , "Stored, dried animal fodder" , "Form of fodder" , "Animal food" .)