Crossword Genius

Plant that comes up in May (3)

Ross

I believe the answer is:

yam

I'm a little stuck... Click here to teach me more about this clue!

'plant that comes up' is the definition.
The answer and definition can be both plants as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'may' is the wordplay.
'may' can be anagrammed to 'YAM'.
But, I am not sure how the anagram is indicated.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for yam that I've seen before include "vegetable plant" , "Tropical root vegetable" , "US sweet potato" , "May be a sweet spud" , "Edible root" .)

I've seen this clue in the Evening Standard.
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