Estate, maybe, with lands and showy flowers (10)

I believe the answer is:

carnations

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'showy flowers' is the definition.
'carnations' can be an answer for 'flowers' (carnation is a kind of flower). I am unsure of the 'showy' bit.

'estate maybe with lands' is the wordplay.
'estate maybe' becomes 'car' (estate is a type of car).
'with' is a charade indicator (letters next to each other).
'lands' becomes 'nations' ('nation' can be a synonym of 'land').
'car'+'nations'='CARNATIONS'

'and' is the link.

Can you help me to learn more?

I've seen this clue in The Guardian.

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