Centaurea cyanus 'Bachelor's Button'
annual

Cornflower Bachelor's Button

Centaurea cyanus 'Bachelor's Button'

The Story

Plant Bio

A hardy annual known for its vivid blue flowers that bloom in clusters.

Often grown as an ornamental flower for its vibrant color and ability to attract beneficial insects.

Uses & Benefits:

Ornamental UsesCentaurea cyanus adds vibrant blue color to borders and flower beds, attracting pollinators and enhancing garden aesthetics.
Practical UsesIts drought tolerance makes it suitable for low-water gardens and sustainable landscaping.
Ecological BenefitsSupports bees, butterflies, and beneficial insects, promoting biodiversity.

Essentials

At a Glance

Plant Type

Annual

Height

24"

Width

12"

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9, 10

Water

Moderate

Humidity

Average

Lifespan

Annual

Native To

Europe

Toxicity

Non-toxic

Bloom period

Late spring – Early summer

J
F
M
A
M
J
J
A
S
O
N
D

In flower about 2 months of the year

Planting

How to Grow

  1. Tuck seeds 1/4 inch deep into well-draining soil.
  2. Mist cuttings lightly to maintain humidity and root in 4-6 weeks.
  3. Plant outdoors after last frost when soil warms.
  4. Water regularly but avoid waterlogging for optimal growth.
  5. Fertilize monthly with a balanced fertilizer during the growing season.
  6. Deadhead spent flowers to encourage continuous blooming.

Pro Tip

Sow seeds directly in early spring for best natural growth and vibrant blooms.

Keep It Thriving

Care Guide

Do

  • Water consistently to keep soil moist 🌱
  • Deadhead to prolong flowering period
  • Provide full sun for optimal growth
  • Mulch to retain soil moisture

Don't

  • Avoid overwatering to prevent root rot ❌
  • Don’t plant in shady areas
  • Refrain from heavy fertilizing late in the season
  • Avoid disturbing roots during flowering

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Deadhead
Harvest
Plant
Propagate

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Colorful flower bordersWildflower meadowsSunny rock gardens

Companion Plants

Lavender CoreopsisEchinaceaYarrow Salvia

Multiply

Propagation Methods

Good to Know

Common Questions