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BogsGrass Like

Juncus compressus

round-fruited rush

A loosely tufted, semi-evergreen perennial, with a grass-like appearance that grows between 10 to 80 cm tall. It has narrow, flattened green leaves and produces small, light brown flowers from May to July

Other common names

brwynen dalgron

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Ultimate height

0.1–0.5 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Clay

Loam

Sand

Moisture

Poorly–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

East–facing or North–facing or South–facing or West–facing

Exposure

Exposed or Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Juncaceae
Native to GB / Ireland: Yes
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: Correct
Plant range: Europe, Asia

How to grow

Cultivation

Grow in permanently moist soil in sun or partial shade. May also be grown in very shallow water at pool margins

Propagation

Propagate by division from mid-spring to early summer

Suggested planting locations and garden types

Wildlife gardens

Pruning

No pruning required, tidy after flowering if necessary

Pests

Generally pest-free

Diseases

Generally disease-free

Get involved

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