Cornflower, also called bachelor's button, is a charming annual known for its bright blue flowers, though varieties are also available in white, pink, and purple. It grows best in full sun and well-drained soil, thriving in cottage gardens, cutting gardens, and pollinator landscapes. Cornflower is relatively drought tolerant once established and requires only moderate watering during prolonged dry periods. The blooms attract bees, butterflies, and other beneficial insects while providing long-lasting color from late spring into summer. Deadheading spent flowers encourages additional blooms and extends the flowering season. With minimal maintenance and dependable performance, cornflower adds cheerful color, wildlife value, and classic garden charm to borders, meadows, and naturalized plantings.

Cornflower is easy to grow from seed and is usually direct sown outdoors in early spring as soon as the soil can be worked. Seeds can also be planted in fall in mild climates for earlier blooms the following season. Sow seeds about one-quarter inch deep and keep the soil lightly moist until seedlings emerge, usually within one to two weeks. Thin seedlings to provide adequate spacing and airflow as they mature. Cornflowers also self-seed readily in favorable conditions, making them an excellent choice for naturalized gardens and pollinator plantings that return with minimal effort.

Plant cornflowers in full sun with well-drained soil after preparing the planting area by loosening the soil and incorporating compost if needed. Sow seeds directly or transplant seedlings once they are well established. Space plants about 8 to 12 inches apart to promote healthy airflow and reduce disease concerns. Water thoroughly after planting to encourage root establishment. Cornflowers also grow well in containers with quality potting soil and good drainage. Proper spacing, sunlight, and moderate watering help produce sturdy stems, abundant blooms, and healthy plants throughout the flowering season.

Cornflowers require very little supplemental feeding and usually perform well in average garden soil. Adding compost before planting provides sufficient nutrients while improving soil structure and moisture retention. A light application of balanced fertilizer may be helpful in poor soils, but excessive feeding should be avoided because it encourages leafy growth at the expense of flowers. Container-grown plants may benefit from occasional light fertilization during the growing season. Moderate fertility supports strong stems, healthy foliage, and continuous flowering while preserving the plant's naturally compact growth habit and abundant bloom production.

Cornflowers are annuals that complete their life cycle in one growing season and do not require winter protection. After frost ends flowering, remove spent plants from the garden and compost healthy material to help maintain a clean growing area. Allow a few flowers to mature if you want plants to self-seed naturally for the following year. Cleaning garden beds in fall helps reduce overwintering pests and diseases while preparing the soil for future planting. Adding compost after cleanup improves soil fertility and creates better growing conditions for next season's flowers.

Cornflowers are excellent cut flowers and should be harvested when blooms are fully open but still fresh. Regular deadheading encourages continued flowering and prevents excessive seed production during the growing season. If self-seeding is desired, allow several flowers to mature naturally before removing the remaining spent blooms. Cut damaged or broken stems throughout the season to maintain an attractive appearance and improve airflow. At season's end, remove finished plants after seed collection or compost healthy material. Consistent harvesting and light pruning help extend flowering while keeping plants healthy and productive.