Ground in some places for florist possibly (5,5)

I believe the answer is:

first floor

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'ground in some places' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'for florist possibly' is the wordplay.
'possibly' is an anagram indicator.
'for'+'florist'='forflorist'
'forflorist' anagrammed gives 'FIRST-FLOOR'.

Can you help me to learn more?

(Another definition for first floor that I've seen is " Part of department store".)

I've seen this clue in The Telegraph.

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