Scarlet pimpernel (Anagallis arvensis) Falcaire Fiáin

Appearance:
Scarlet pimpernel (Anagallis arvensis) is a low-growing plant with square stems and small, bright scarlet (sometimes blue or pink) flowers, each with five petals. The leaves are oval, opposite, and unstalked.

Growth Habit:
It is a creeping annual herb that spreads across the ground, forming mats. It can grow up to 30 cm (12 inches) tall.

Cultivation:
Easily grown from seeds, it prefers undisturbed areas and can thrive in a range of conditions. It self-seeds readily.

Soil:
Thrives in light, well-drained soils, but can adapt to various soil types, including sandy and loamy soils.

Sunlight:
Prefers full sun to partial shade. Full sunlight encourages better flowering.

Watering:
Requires moderate watering. It can tolerate short dry periods but does not thrive in overly wet conditions.

Uses:
Traditionally considered a “weather predictor,” as the flowers close before rain. The plant is sometimes used as a minor folk remedy, though it can be toxic in large quantities.

Dyeing:
Not commonly used for dyeing.

Ornamental:
Occasionally grown in gardens for its small, vivid flowers, adding color to borders and rockeries.

Medicinal:
Historically, it was used for skin conditions, mental health issues, and as a diuretic, but caution is advised due to its potential toxicity. Modern herbalists rarely use it.

Maintenance:
Low maintenance. Can be invasive in some regions, so control may be needed to prevent unwanted spreading.