With dazzling, sky-blue flowers, 'Blue Boy' is wonderful in mass, and because it is drought tolerant, it's practically care free. Flowers can be used dried or fresh cut, while the edible petals make a colorful garnish to salads, crudités platters, or dinner plates. Also known as cornflower, bachelor's button will “naturalize”, or self-sow, for another crop of blue flowers next year.
Botanical Name: Centaurea cyanus
Native: Europe and Asia
Plant Dimensions: 24″-36″ tall, 12″ wide
Variety Information: ½”–1″ wide, sky blue flowers
Exposure: Full sun
Bloom Period: Summer
Attributes: Attracts Pollinators, Cut Flower, Deer Resistant, Drought Tolerant, Edible Flower
When to Sow Outside: RECOMMENDED. 1 to 2 weeks before your average last frost date, or in late summer/fall for blooms the following season. Mild Climates: Sow in fall for winter bloom.
When to Start Inside: 4 to 6 weeks before your average last frost date. Not recommended; does not transplant well. Use biodegradable pots to avoid root disturbance.
Days to Emerge: 7–14 days
Seed Depth: ¼”
Seed Spacing: A group of 3 seeds every 8″–10″
Thinning: When 1″–2″ tall, thin to 1 every 8″–10″
Special Care: For optimum germination, chill seed in the refrigerator for 5 days before sowing.
Harvesting: For longest vase life harvest in the morning and choose buds that are about half open.