Larkspur botanic name delphinium consolida. Easy to grow from seed. The one i got required staking. I am also growing perennial variety of delphinium (perennial in hilly areas only and not in plains) delphinium elatum and grandiflora but not in bloom yet. Growing them in 10 inches clay pots.
Then comes calendula officinalis locally called Gul-e-Ashrafi one of the earliest spring bloomers along with dahlia.