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A picture of a Fringed Willowherb

Fringed Willowherb

Epilobium ciliatum

Also known as

American Willowherb, Slender Willow Herb, Northern Willow Herb

Epilobium ciliatum 3677 by Randy A. Nonenmacher (CC BY-SA 3.0)

Full Sun
Easy care
Half-hardy

H3

RHS hardiness

-5°C

Minimum temperature

Expected size

Height
Spread

1.5m

Max

50cm

1m

Min

10cm

Flowering

  • spring
  • summer
  • autumn
  • winter

More images of Fringed Willowherb

A close up of a Epilobium ciliatum plant
A white Epilobium ciliatum flower with green leaves
A close up of a Epilobium ciliatum plant
A close up of a Epilobium ciliatum plant
Some Epilobium ciliatum growing in the wild

Fringed Willowherb Overview

Epilobium ciliatum is a clumping perennial plant in the Onagraceae family, producing oppositely-arranged, oval to lance-shaped, toothed leaves. Flowers measure approximately 1cm across, they are purple-pink in colour and have deeply notched petals. This plant is covered in fine hairs, creating a fringed effect, hence this plant is commonly known by the name Fringed Willowherb, amongst others. Originating from North America, this species was introduced by accident to Europe, Australia and New Zealand, where its distribution is now expanding. It has a short life cycle, in favourable conditions it may produce a new seed generation within 10 weeks. It has been described as aggressive and has the potential to become a noxious weed, especially on agricultural land.

How to propagate Fringed Willowherb

Seed

Special features of Fringed Willowherb

Attractive flowers