Second choice of potherbs (5)

I believe the answer is:

other

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'second choice' is the definition.
'other' can be an answer for 'second' (I've seen this before). I am unsure of the 'choice' bit.

'of potherbs' is the wordplay.
'of' indicates a hidden word.
'OTHER' can be found hidden inside 'potherbs'.

Can you help me to learn more?

(Other definitions for other that I've seen before include "Different (from those mentioned)" , "One may be significant" , "Different; alternate" , "Alternative of two" , "Remaining" .)

I've seen this clue in the Evening Standard.

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