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AquaticBogsHerbaceous Perennial

Lysichiton × hortensis

A herbaceous perennial with musky, arum-like flowers in spring, before the leaves, comprising an upright green spadix surrounded by a green-tipped spathe. The large, glossy, oblong leaves, produced in a basal cluster, can reach 1.2m tall. A hybrid between L. americanus and L. camtschatcensis which does not set seed

Synonyms
Lysichiton hybrid
Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Moisture
Poorly–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green White
Summer Green
Autumn
Winter
Position
  • Full sun
  • Partial shade
Aspect

West–facing or South–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Araceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Clump forming
Potentially harmful
Harmful if eaten, skin/eye irritant. Wear gloves and other protective equipment when handling Pets: harmful if eaten, skin/eye irritant - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Genus

Lysichiton are rhizomatous herbaceous perennials with large, lance-shaped leaves developing after the ovate white or yellow flower spathes surrounding the club-like, yellow or green flowering spadix

Name status

Correct

How to grow

Cultivation

This plant is listed on Schedule 9 of the UK Wildlife & Countryside Act as an invasive non-native species. Across the EU, UK and NI it is an offence to plant or cause to grow in the wild plants listed on Schedule 9 of this order. These plants should not be planted or caused to grow in the wild and in addition are banned from sale. Gardeners possessing them should undertake measures to control them. See RHS advice on invasive non-native species for further information

Propagation

Please see cultivation notes

Suggested planting locations and garden types
  • Architectural
  • Low Maintenance
Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.