Cornflower (Centaurea cyanus)

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Botanical Information

• Family: Asteraceae
• Common Names: Cornflower, Bachelor’s Button, Bluebottle
• Parts Used: Flowers, leaves

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Description

Centaurea cyanus is an annual wildflower native to Europe but now found in many temperate regions. Traditionally used in European folk medicine, its flowers have been valued for their anti-inflammatory, astringent, and diuretic properties. Cornflower is particularly known for its benefits to eye health, digestion, and skin care.

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Historical and Traditional Uses

• Used in traditional European medicine as an eyewash for conjunctivitis and eye strain.
• Traditionally applied as an astringent wash for wounds, acne, and irritated skin.
• Employed as a mild digestive tonic to relieve bloating and stimulate appetite.

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Constituents

• Flavonoids
• Anthocyanins
• Tannins
• Polyphenols
• Mucilage

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Actions

• Astringent
• Anti-inflammatory
• Diuretic
• Digestive tonic
• Ophthalmic (eye tonic)

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Medicinal Uses

1. Eye Health and Vision Support:
Cornflower is widely used as an eye tonic to reduce redness, irritation, and inflammation. It is often prepared as an eyewash for conjunctivitis and tired eyes.

2. Skin and Wound Healing:
Applied externally as a wash or poultice, Cornflower helps soothe irritated skin, minor wounds, and acne.

3. Digestive Support:
Cornflower is traditionally taken as a mild digestive tonic to support appetite, relieve bloating, and ease mild stomach discomfort.

4. Urinary and Kidney Support:
Its mild diuretic properties help support kidney function and reduce water retention.

5. Anti-Inflammatory and Antioxidant Benefits:
Cornflower’s flavonoids and anthocyanins provide antioxidant effects that help reduce inflammation and protect cells from oxidative stress.

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Preparation and Dosage

Infusion (Tea):

• 1-2 tsp of dried flowers per cup of boiling water. Steep for 10 minutes and drink up to 3 times daily.

Tincture:

• 2-4 ml of tincture taken up to 2 times daily.

Eyewash:

• Make a light infusion and allow it to cool before applying as an eyewash with a sterile cloth or eye cup.

Poultice or Wash:

• Apply as a compress or wash for wounds, acne, or skin irritations.

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Precautions and Contraindications

• Pregnancy and Lactation: Generally considered safe in small amounts; consult a healthcare provider before use.
• Allergic Reactions: Individuals sensitive to plants in the Asteraceae family should use with caution.
• Eyewash Preparation: Ensure sterility when preparing an eye rinse to avoid infections.

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Energetics (Traditional Medicine Perspectives)

• Traditional European Herbalism: Cooling and astringent; supports circulation and tissue repair.

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Combinations

• For Eye Health: Combine with eyebright and chamomile.
• For Skin Healing: Combine with calendula and plantain.
• For Digestive Support: Combine with fennel and peppermint.

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Harvesting and Storage

• Harvesting: Flowers are best collected when fully bloomed in summer.
• Drying: Air dry in a well-ventilated, shaded area.
• Storage: Store dried flowers in an airtight container away from moisture and light.

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Modern Research

Studies confirm Centaurea cyanus’s antioxidant, anti-inflammatory, and diuretic properties, reinforcing its traditional medicinal uses.

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Cornflower remains a valuable herb in traditional and modern herbal medicine, particularly for eye health, skin care, and digestive support.