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Juncus ensifolius

swordleaf rush

Semi-evergreen to evergreen, rhizomatous perennial about 45cm tall, with upright stems and flat, curved, mid-green basal leaves to 25cm long. Produces globular flowerheads of small green or reddish-brown flowers in summer followed by dark brown or chestnut brown seedheads to 4mm across

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Clay
Loam
Moisture
Moist but well–drained, Poorly–drained
pH
Acid
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Green Red Brown Green
Autumn Green Brown
Winter Green
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Juncaceae
Native to the UK
No
Foliage
Evergreen or Semi evergreen
Habit
Clump forming
Genus

Juncus can be annuals, deciduous or evergreen perennials, forming clumps of narrow, often cylindrical leaves, with clusters of small brown flowers borne on leaf-like stems in summer

Name status

Unresolved

Plant range
North America, Mexico, Japan

How to grow

Cultivation

Grow in permanently moist acid soil in sun or part shade

Propagation

Propagate by seed in spring or by division from mid-spring to early summer

Suggested planting locations and garden types
  • Cottage and informal garden
  • Patio and container plants
  • Flower borders and beds
Pruning

No pruning required, tidy after flowering if necessary

Pests

Generally pest-free

Diseases

Generally disease-free

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