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Rockery Willowherb

Epilobium pedunculare

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Plant Profile

Flowering Months:
Onagraceae (Willowherb)
Life Cycle:
Maximum Size:
1 metre tall
Gardens, rocky places, wasteland.

Pink, 4 petals
Pale pink flowers with notched petals. The flowers are long stalked, emerging from the leaf axils.
The fruits are long and cylindrical pods.
The leaves are in opposite pairs along the stems. This prostrate flower has sharply-toothed leaves. The leaves are stalked and round in shape. Most commonly seen in west Ireland. Rockery Willowherb is a garden escape species.
Frequency (UK):
Rarely seen  

Similar Species

Other Information


Epilobium pedunculare is a species of Epilobium found on the Antipodean Islands, including New Zealand. It is a creeping herb, rooting at nodes and forming loose mats up to 0.5 m in diameter. Its stems are strigillose or with short erect hairs on lines decurrent from margins of petioles. The inflorescence is an axillary raceme or panicle of 1-5 flowers. The flowers are bright red to orange-red in color. Its fruits are 4-6mm long, slightly curved and have a long beak.


Rockery Willowherb, also known as Epilobium pedunculare, is a species of flowering plant belonging to the Onagraceae family. This plant is native to North America and can be found in various regions such as Alaska, Canada, and the United States.

The Rockery Willowherb is a herbaceous perennial that grows up to 1 meter tall. It is known for its vibrant pink or purple flowers, which bloom from mid-summer to early autumn. The flowers are arranged in racemes and have a unique shape, with four petals and many stamens. The leaves are lance-shaped and grow alternately along the stem.

Rockery Willowherb is a popular plant for rock gardens, as it thrives in well-drained soil and can tolerate dry conditions. It is also commonly used as an ornamental plant in meadows, prairies, and woodland gardens. In addition to its beauty, this plant is also beneficial for wildlife. It provides nectar for a variety of pollinators, such as bees and butterflies, and its seeds are an important food source for birds.

In terms of cultivation, Rockery Willowherb is relatively easy to grow and does not require much maintenance. It prefers full sun to partial shade and can tolerate a range of soil types as long as the soil is well-drained. To propagate, you can sow the seeds directly in the garden in late autumn or early spring, or you can divide the clumps in early spring.

Rockery Willowherb is a beautiful and versatile plant that can add color and texture to any garden. Its adaptability and low maintenance make it a great choice for gardeners of all levels of experience. Whether you are looking to attract pollinators, provide habitat for wildlife, or simply beautify your outdoor space, Rockery Willowherb is definitely worth considering.

In addition to its ornamental and wildlife value, Rockery Willowherb has also been used for medicinal purposes. The plant's leaves, stems, and roots contain compounds that have been found to have anti-inflammatory and antimicrobial properties. Some indigenous communities in North America used Rockery Willowherb to treat wounds and skin conditions, as well as to relieve pain and reduce fevers.

However, it is important to note that while Rockery Willowherb has medicinal properties, it should not be used as a substitute for professional medical care. The safety and effectiveness of using this plant for medicinal purposes have not been thoroughly studied, and more research is needed before it can be recommended for use.

Another interesting aspect of Rockery Willowherb is its classification and taxonomy. The plant was originally classified as a species of the genus Chamerion, but later reclassified as a species of Epilobium. This is not uncommon in the world of botany, as taxonomy is a constantly evolving field, and plants can be reclassified based on new discoveries and studies.

Rockery Willowherb is a versatile and interesting plant that offers a range of benefits for gardens, wildlife, and potentially for medicinal purposes. Its beauty, adaptability, and low maintenance make it a great choice for any gardener looking to add color and texture to their outdoor space. With its unique characteristics and history, Rockery Willowherb is a fascinating addition to any garden.

It's also worth mentioning that Rockery Willowherb is a hardy plant that is able to withstand cold temperatures and frost. This makes it a great choice for gardens in cooler climates and regions that experience harsh winters. In addition, Rockery Willowherb is relatively disease and pest-resistant, making it a low-maintenance option for gardeners.

One of the great things about Rockery Willowherb is that it can be grown in a variety of ways, from seed to cuttings to division. If you're starting from seed, it's best to sow the seeds directly in the garden in late autumn or early spring. The seeds need light to germinate, so it's important not to cover them with soil. They will typically germinate within a few weeks. If you prefer to propagate from cuttings, you can take stem cuttings from the plant in early spring or late summer and root them in a pot filled with a well-draining soil mixture. Finally, if you want to divide the clumps of Rockery Willowherb, it's best to do so in early spring, before new growth begins.

In terms of care and maintenance, Rockery Willowherb is a low-maintenance plant that doesn't require much attention. It's important to keep the soil well-drained and to avoid over-watering, as the plant can rot in water-logged soil. In addition, Rockery Willowherb can benefit from a light application of compost or well-rotted manure in the spring to help it grow stronger and more vigorously.

In conclusion, Rockery Willowherb is a great plant for gardens, with its beautiful flowers, low-maintenance requirements, and ability to thrive in a variety of conditions. Whether you're starting from seed, cuttings, or division, this plant is easy to grow and care for, making it a great choice for any gardener. With its unique features and benefits, Rockery Willowherb is a valuable addition to any garden.