Medicinal seeds for Denise a problem? (7)

I believe the answer is:

aniseed

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

'medicinal seeds for' is the definition.
The definition suggests a singular noun which matches the answer.

'denise a problem?' is the wordplay.
'problem?' indicates an anagram (I've seen 'problem' mean this).
'denise'+'a'='denisea'
'denisea' anagrammed gives 'ANISEED'.

Can you help me to learn more?

(Other definitions for aniseed that I've seen before include "Cake flavouring" , "Liquorice flavouring -- ie Danes (anag)" , "Eased in (anag)" , "Flavouring herb" , "Flavouring of sambuca" .)

I've seen this clue in the Sydney Morning Herald.

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