Crossword Genius

Stupidly hacking tender edible plants grown here (7,6)

Ross

I believe the answer is:

kitchen garden

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'edible plants grown here' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.

'stupidly hacking tender' is the wordplay.
'stupidly' is an anagram indicator (a stupid ordering of the letters).
'hacking'+'tender'='hackingtender'
'hackingtender' with letters rearranged gives 'KITCHEN GARDEN'.

Can you help me to learn more?

(Other definitions for kitchen garden that I've seen before include "Source of fresh veg" , "Where vegetables etc are grown for one's own use" , "veg grown here" , "Area of growth" , "Vegetable plot" .)

I've seen this clue in The Telegraph.
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