Epilobium alsinifolium
Epilobium alsinifolium · Onagraceae
The gardener's calendar
Ideal time to plant epilobium alsinifolium: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Common name
- Chickweed willowherb
- Family
- Onagraceae
- Type
- Perennial herb
- Mature height
- 15 to 30 cm tall
- Flowering period
- July to September
- Flower color
- Pale pink to red
- Foliage
- Deciduous
- Hardiness
- Very hardy (zones 3-8)
- Origin
- European mountains, subarctic zones
- Soil type
- Cool to moist, well-drained soil
Care
Watering
Keep the soil consistently moist and fresh, especially during the growing season. Epilobium alsinifolium appreciates soil that never dries out completely. Increase watering frequency during hot summers and reduce in winter. Avoid waterlogged conditions that could promote root rot.
Light exposure
Plant in partial shade to shaded locations, ideally near a moisture source like a stream or pond. This plant loves cool, protected spots away from direct midday sun. Dappled light encourages better flowering.
Soil
Choose soil rich in organic matter, light and well-drained, with a tendency toward moisture. Adding compost or peat improves structure. This species thrives in slightly acidic to neutral soils and tolerates permanent soil coolness well.
Pruning and maintenance
Cut back stems after flowering to promote a compact shape and vigorous regrowth in spring. Remove dead foliage in late autumn. Light cleaning in early spring is sufficient to maintain plant balance.
Fertilizing
Apply compost or organic fertilizer once yearly in spring. Avoid excess nitrogen, which promotes excessive leaf growth at the expense of flowers. Naturally rich soil often reduces the need for additional feeding.
Diseases and pests
This plant is generally robust and rarely troubled by disease. Excessive stagnant moisture can occasionally cause rot or fungal issues. Ensure good air circulation and drainage to prevent these problems. Very rarely affected by common pests.
Did you know?
Epilobium alsinifolium is a typical pioneer plant of northern mountain regions and subarctic zones, capable of rapidly colonizing disturbed or freshly eroded terrain. Its delicate pale pink flowers belie a remarkable adaptation to extreme climates where few plants thrive—a botanical symbol of resilience in hostile environments.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
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Tips generated and checked by Viridia — adapt them to your local climate.