Drinks after consuming pot? They’ll topple (11)

I believe the answer is:

supplanters

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'they'll topple' is the definition.
I can't judge whether this definition defines the answer.

'drinks after consuming pot?' is the wordplay.
'drinks' becomes 'sups' (I've seen this before).
'after consuming' indicates putting letters inside.
'pot?' becomes 'planter' (I have seen 'Decorative pot ' mean 'planter' so perhaps 'pot' could also mean 'planter').
'sups' going around 'planter' is 'SUPPLANTERS'.

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I've seen this clue in The Hindu.

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