Leave huge foe to spread weed (9)

I believe the answer is:

goosefoot

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'weed' is the definition.
The answer and definition can be both plants as well as being singular nouns.
Perhaps there's an association between them I don't understand?

'leave huge foe to spread' is the wordplay.
'leave' becomes 'go' (to go is to depart or leave).
'huge' becomes 'os' (abbreviation for outsize).
'spread' is an anagram indicator.
'foe'+'to'='foeto'
'foeto' with letters rearranged gives 'efoot'.
'go'+'os'+'efoot'='GOOSEFOOT'

Can you help me to learn more?

(Another definition for goosefoot that I've seen is " Plant of the beet family".)

I've seen this clue in The Daily Express.

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