Centaurea cyanus
Blue Diadem

How hard is it to find old-fashioned TALL "Bachelor Buttons" these days? Unless you grow them from seed, you'll probably only find those squatty ones sprayed with dwarfing chemicals that will never look as charming as these! Bright, richest blue, 2.5" wide, edible blooms on upright 3' branched stems is what you want and our favorite, 'Blue Diadem,' truly delivers! Perfect mid-bed, it makes the sweetest cut flowers. Rich soil is best, kiddies. To 1' wide. Dead-head to prolong flowering, and you'll have blooms Spring and Summer. Self-sows - woo-hoo!

• Plant type: Flowering
• Pot Size: 4-inch
• Life Span: Annuals
• Flower Colors: Blue-Purple
• Bloom Time: Spring
• Zones: Zone 1–11
• Sun Exposure: Part Sun
• Water needs: Regular Water

Explore more beautiful annual plants in our Annie's Annuals - Annual Plants Collection to find companion varieties that pair perfectly with your Bachelor Buttons.

We guarantee that the plants we sell are healthy and viable at the time they leave our care.

If a plant arrives in substandard condition, please take clear photographs and contact us within 48 hours of delivery. To ensure eligibility under this guarantee, we strongly encourage you to open and unpack your shipment immediately upon delivery and inspect the plants thoroughly.

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$14.99 flat rate for up to 6 plants is for standard FedEx/UPS Ground shipping to eligible states only. $19.99 for up to 12 plants. Plants being shipped to the following states are sent via Express Mail to help ensure they arrive quickly and healthy. 

(AL, CT, DC, DE, FL, GA, IN, KY, ME, MD, MA, MI, NH, NJ, NY, NC, OH, PA, RI, SC, TN, VT, VA, WV)
(list of states subject to change seasonally due to extreme heat or cold conditions)

We cannot ship Annie's Annuals plants to P.O. boxes or outside the continental U.S.

Individual plants are shipped in 4" pots and we ship in boxes of 4, 6, 8, or 12 plants per box.

For more details, read our full Ordering and Shipping Policies

Get your plants off to a strong start with our care guide.

Download the Plant Care Guide (PDF)