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 Choosing the Best Plant Pots for Your Home and Garden The Balcony Garden Grape Seed Extract: Usefulness and Safety NCCIH Kale Seed Planting Unlock the Exciting World of Growing Succulents in Water What About Paw Paw? Arnold Arboretum