Bachelor’s Button/Cornflower Garden Guide
Bachelor’s Button/Cornflower Stats at a Glance
Botanical Name: Centaurea cyanus
Common Name(s): Bachelor’s button, cornflower, basket flower, ole-fashioned blue bottle
Height: to 3 feet
Soil Conditions: Moist, well-drained
Sun: Full sun
Soil pH Conditions: 6.75
Notes: Bachelor’s button varieties come in both annual and perennial varieties.
Starting from Seed
Bachelor’s button can be started indoors or sown directly into the garden. To start indoors, fill peat pots with a commercial seed-starting mix. Moisten the soil prior to planting the seed. Sow 3-4 seeds per pot, cover with soil, then cover the containers with clear plastic wrap to maintain soil temperature and moistness. Do not place them in direct sunlight that may cause the temperature to raise above 60-70°F. Remove the plastic wrap as soon as the seedlings emerge and move to a sunny location. Transplant before they reach 4” tall. Plan to start indoors one month prior to planting in the garden.
You can also sow bachelor’s buttons directly into any fertile garden soil. If need be work in two to three inches of a good compost to a depth of eight inches. Sow seeds into the soil about ¼” deep. Make sure they are covered as they need darkness to germinate. Moisten the soil and keep moist until they germinate.
Germination: 7-25 days.
When to Plant
Where to Plant
Care and Maintenance
Fertilize plants monthly with a well-balanced fertilizer.
Do not overwater. Bachelor’s button are drought-tolerant and will not perform well if kept too wet. In hot humid weather, bachelor’s button is susceptible to a few diseases such as powdery mildew. Be sure to water from below.
Common pests of bachelor’s buttons include aphids
Did You Know?
Young unmarried men used to wear cut cornflowers in shirt or coat buttonholes as a sign that they were courting?