Northern Yorkshire flower is poimtless (2,3)
I believe the answer is:
no use
'poimtless' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'northern yorkshire flower' is the wordplay.
I cannot quite see how this works, but
'northern' could be 'n' (abbreviation e.g. N. Ireland) and 'n' is located in the answer.
'flower' could be 'ouse' (Yorkshire river) and 'ouse' is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'is' is the link.
Can you help me to learn more?
(Other definitions for no use that I've seen before include "Ineffectual" , "Futile" , "Pointless" , "won't help?" .)