Size
Ultimate height
0.5–1 metresTime to ultimate height
5–10 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Poorly–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Cream Green White | |||
|---|---|---|---|---|
| Summer | Brown | Cream Green White | ||
| Autumn | Cream Green White | |||
| Winter | Cream Green White |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H7Botanical details
- Family
- Acoraceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Tufted
- Genus
Acorus are deciduous or semi-evergreen, moisture-loving rhizomatous perennials forming tufts of linear or sword-shaped leaves, with insignificant spike-like flowers borne near the tips of central leaf-like stems
- Name status
Accepted
How to grow
Cultivation
Grow at pond margins in very moist or wet soils in full sun. Divide every few years to prevent congestion. See pond plants for further advice
Propagation
Propagate by rhizome division at the beginning of the growing season. Pot up and plant out only when fully established
Suggested planting locations and garden types
- Cottage and informal garden
Pruning
Cut back after flowering
Pests
Generally pest-free
Diseases
May be susceptible to powdery mildews
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.