Nigella is one of those flowers that actually prefers the cool soil of early spring. In Zone 6b, I start sowing my nigella seeds in late winter and continue sowing through early Seed Plants: Angiosperms Introductory Biology Campania Series 1 Planter P 812 Travertine 42" x 36" How to Harvest and Save Moonflower Vine Seeds The Iowa Gardener: Friend or foe? When it comes to tiger lilies, it depends Lifestyles thegazette.com