The urban area here contains light Scottish flora (11)
I believe the answer is:
thistledown
'scottish flora' is the definition.
The answer and definition can be both plants as well as being singular nouns.
Maybe you can see an association between them that I can't see?
'the urban area here contains light' is the wordplay.
'the urban area here' becomes 'thistown' (I can't justify this - if you can you should give a lot more credence to this answer).
'contains' indicates putting letters inside.
'light' becomes 'led' (light-emitting diode).
'thistown' enclosing 'led' is 'THISTLEDOWN'.
Can you help me to learn more?
(Other definitions for thistledown that I've seen before include "Airborne seeds" , "Fluff on which some seeds fly" , "Light fluff of some seeds" , "What helps some seeds fly" , "A mass of feathery seeds" .)