Cornflower (Centaurea cyanus)

Cornflower (Centaurea cyanus) is an annual or biennial plant reaching about 3 ft (90 cm). It has multiple branching stems, a rosette of lower leaves, and striking sky-blue flower heads that bloom in summer. Historically, cornflower gained a reputation for treating eye conditions (the infusion was strained and used as an eyewash), though modern evidence of its efficacy is limited. It is sometimes used as a mild bitter tonic to support digestion.

Mildly Bitter & Stimulant: Can improve digestion and possibly support liver function. Slightly Antibiotic: Cnicin, one of its constituents, shows mild antibacterial activity. External Applications: Traditional uses include soothing eye strain, conjunctivitis, and minor skin irritations.

Potential Irritation: As with any herb, discontinue use if irritation occurs.

Native to the Near East, cornflower has spread across temperate regions worldwide. Commonly found in or around cornfields, it grows easily in disturbed soil. The flowers are gathered just after they open in summer.