Moorland needs cultivated borders covered (10)

I believe the answer is:

ensheathed

'covered' is the definition.

'moorland needs cultivated borders' is the wordplay.
'moorland' becomes 'heath' (I've seen this before).
'cultivated' indicates an anagram.
'borders' means one lot of letters goes inside another.
'needs' with letters rearranged gives 'ensed'.
'heath' inserted within 'ensed' is 'ENSHEATHED'.

I've seen this clue in The Times.

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