What Rons agreed to cultivate (4,6)

I believe the answer is:

rose garden

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'what rons agreed to cultivate' is the definition.
I can't tell whether this defines the answer.

'rons agreed to cultivate' is the wordplay.
'to cultivate' indicates anagramming the letters (I've seen 'cultivated' mean this).
'rons'+'agreed'='ronsagreed'
'ronsagreed' is an anagram of 'ROSE-GARDEN'.

Can you help me to learn more?

(Other definitions for rose garden that I've seen before include "pretty backyard" , "ramblers here" , "floral feature" , "Growing area" , "this was never promised you" .)

I've seen this clue in The Irish Independent.

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