Tall Annual Willowherb (Epilobium brachycarpum)

Tall Annual Willowherb

Also known as: Autumn Willowweed, Panicled Willowherb, Annual Fireweed, Tall Fir

Tall Annual Willowherb (Epilobium brachycarpum) is also called tall fireweed. This species is indigenous to North America and is a member of the evening primrose family. Like all willowherbs, it has tufts of tiny hairs on its seeds.

Scientific classification

Species

Tall Annual Willowherb (Epilobium brachycarpum)

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Annual

Lifespan

30 cm to 1.8 m

Plant Height

Green, Blue

Leaf Color

5 mm to 1.3 cm

Flower Size

Pink, Purple

Flower Color

Deciduous

Leaf type

20 - 35 ℃

Ideal Temperature

Images of Tall Annual Willowherb

Distribution of Tall Annual Willowherb

Distribution Map

Tall Annual Willowherb is naturally found in North America's western regions and has expanded its presence into various temperate zones across both the Northern and Southern Hemispheres. Its distribution includes being introduced to parts of South America and Europe, implying a broad ecological adaptability.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Meadows, Grasslands, Woodlands, Streambanks, Roadsides, Valleys, Montane

Hemisphere Trend Curve

Northern

Sorthern

Care Guide for Tall Annual Willowherb

Every week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Tall Annual Willowherb flourishes in moist, fertile conditions and prefers consistent moisture, tolerating brief dryness. Weekly watering is essential, making it ideal for outdoor cultivation. During its active growing season, adequate water uptake is crucial for promoting vigorous growth and development.

Fertilize: For tall Annual Willowherb, use balanced nutrition fertilizers initially, transitioning to high-nitrogen before flowering. Fertilize every 4-6 weeks during the growing season, reducing after flowering and ceasing in dormancy. Water tall Annual Willowherb to prevent root burn, and ensure even nutrient distribution for optimal uptake.

Pruning: Tall Annual Willowherb is an annual herb featuring spikes of pink flowers and lance-shaped leaves. Prune in early to late spring to promote growth and remove dead parts, enhancing air circulation and flowering. Regular pruning prevents a leggy appearance typical of fast-growing annuals.

Propagation: Tall Annual Willowherb, native to North America, propagates easily by surface sowing fresh seeds in well-drained, loamy soil. As the seeds need light for germination, they should not be covered. Maintaining consistent moisture promotes seedling growth, making tall Annual Willowherb a favored choice for efficient propagation.

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