Indian tobacco, eg (7)
I believe the answer is:
lobelia
'indian tobacco eg' is the definition.
(indian tobacco is a kind of lobelia)
This is all the clue.
(Other definitions for lobelia that I've seen before include "Oilable (anag)" , "Oil bale (anag) - flower" , "Common garden plant; oil bale (anag.)" , "Flower used for hanging baskets" , "Five-lobed flower" .)