Skip to product information
1 of 2
Hudson Valley Seed Co.

Black Button Centaurea

Centaurea cyanus

Conventionally Grown

A striking, dark-maroon cornflower for edible petals and bouquets.

This isn't your classic light blue cornflower; this is its dramatic, moody cousin. 'Black Button' is a stunning variation of the beloved bachelor's button, offering an abundance of double and semi-double blooms in a rich, super-dark maroon that reads as almost black in the garden. The upright plants grow tall, up to 38 inches (and may appreciate a little staking), providing a long season of striking color. They are a classic for a reason: they make a fantastic fresh-cut flower and are also wonderful for drying, holding their deep color beautifully.

The flowers are more than just a pretty face; they're also a delight in the kitchen. The edible petals have a mild floral flavor and make a truly sophisticated garnish for salads, desserts, or cheese platters. As a cool-season lover, this plant is easy to grow and will often self-sow, returning for another show the following year. If you can bear to leave the seed heads, you'll also provide a welcome treat for garden birds.

Unit Price Quantity Availability
100 Seeds $4.69
In Stock

Price as selected: $0.00

Growing instructions
Direct seeding is recommended. Sow seeds 1/4" deep in early spring as soon as soil can be worked, or sow in the fall. Thin seedlings to 6-9" apart. To start indoors, sow 3-4 weeks before planting out. Freezing seeds for 10-14 days prior to indoor sowing can improve germination.
Product Details
Days to Maturity 65-75 days
Days to Germination 7-14 days
Width at Maturity 9"
Height at Maturity 36-40"
Hardiness Zone Range Annual 4 5 6 7 8
Sun Conditions Full Sun (8+ Hours Sun)
Planting Depth ¼"
Row Spacing 12"
Plant Spacing 9"

    Black Button Centaurea
    Black Button Centaurea

    Customer Reviews