Product Details
Lifecycle: Annual
Hardiness: Hardy annual
Mature Size: 18–24 in tall × 10–12 in wide
Sun: Full sun to partial shade
Soil: Average, well-drained
Bloom Season: Spring to early summer
Flower Color: Pure white
Approximate Seeds Per Packet: ~200
USDA Growing Zones: 2–11 (grown as a hardy annual)
Fall sow in Zones 8–11
Early spring sow in colder regions
Growing Guide
Sowing Depth
Surface sow or barely cover. Light aids germination.
Germination Time
7–14 days
Seed to Bloom
Approximately 10–12 weeks
Starting Indoors
Not recommended. Nigella develops a taproot and does not transplant well.
Starting Outdoors
Recommended. Direct sow as soon as soil can be worked in spring, or in late autumn for earlier bloom in mild climates. Thin seedlings early to avoid crowding.
When to Set Outside
Plants should remain where sown.
Placement & Cultivation
Best planted in open borders, cottage gardens, or interplanted among perennials where its fine texture can soften stronger forms. Performs well in cool weather and may decline once summer heat sets in. Allow some plants to set seed for natural re-sowing.
Final Spacing
8–10 inches
Water Requirements
Low to moderate. Water during establishment; plants tolerate light drought once established.
Soil pH
Neutral to slightly alkaline
Fertilizer
Not required. Excess fertility encourages foliage at the expense of flowers.
Pests & Diseases
Generally trouble-free. Good air circulation prevents mildew.
Cut Flower Use
Harvest flowers just as they open. Seedpods can be cut green for fresh arrangements or allowed to dry on the plant for everlasting use.

