Crossword Genius

Income from farming, could one say, avoiding English perennial (8)

Ross

I believe the answer is:

agrimony

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'perennial' is the definition.
(perennial plant)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for agrimony that I've seen before include "Growth" , "Plant with yellow flower-spikes" .)

I've seen this clue in The Times.
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