First to light cigar blasted plant (6)
I believe the answer is:
garlic
'plant' is the definition.
(garlic is a plant)
'first to light cigar blasted' is the wordplay.
'first to' suggests taking the first letters.
'blasted' is an anagram indicator.
The initial letter of 'light' is 'l'.
'l'+'cigar'='lcigar'
'lcigar' is an anagram of 'GARLIC'.
(Other definitions for garlic that I've seen before include "Plant of the onion family" , "Aioli ingredient" , "Aromatic bulb used as seasoning" , "Pungent allium" , "Kitchen additive" .)