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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

Epilobium ciliatum 3643
Epilobium ciliatum flora
Epilobium ciliatum 3680
Epilobium ciliatum 3706
Epilobium ciliatum 3757

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.

Propagation

Seed

Special Features

Attractive flowers