Redesigned garden set apart (9)

I believe the answer is:

estranged

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'apart' is the definition.
Both the definition and answer are adjectives. Perhaps they are linked in a way I don't understand?

'redesigned garden set' is the wordplay.
'redesigned' indicates anagramming the letters.
'garden'+'set'='gardenset'
'gardenset' is an anagram of 'ESTRANGED'.

Can you help me to learn more?

(Other definitions for estranged that I've seen before include "Alienated, disaffected" , "Having become unfriendly or alienated" , "no longer friendly" , "Split" , "Sad regent (anag) - disaffected" .)

I've seen this clue in The Telegraph and The Sun.

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