Alpine plant Swedes lie about (9)
I believe the answer is:
edelweiss
'alpine plant' is the definition.
(I've seen this before)
'swedes lie about' is the wordplay.
'about' indicates an anagram.
'swedes'+'lie'='swedeslie'
'swedeslie' anagrammed gives 'EDELWEISS'.
(Other definitions for edelweiss that I've seen before include "Swedes lie about small white flower in Switzerland" , "Perennial Alpine plant -- we see lids (anag)" , "Sound of Music plant" , "Deep admiration" , "high growth" .)