Overview
Juncus inflexus is a clump forming grass like in the genus Juncus, part of the Juncaceae family, with evergreen foliage. It typically grows around 0.5-1 metres tall and 0.5-1 metres wide, reaching full size in around 2-5 years. Juncus inflexus grows best in full sun and partial shade, and tolerates most soils and any pH. Its UK hardiness is rated H7. Suggested uses include cottage and informal garden, patio and container plants and flower borders and beds.
About
Juncus inflexus, commonly known as hard rush or brwynen galed, is a clump-forming, evergreen grass-like plant from the Juncaceae family. It typically grows to a height and spread of 0.5 to 1 metre, reaching full size within 2 to 5 years. This hardy cultivar thrives in a variety of soil types including clay, loam, and sand, and tolerates a wide pH range from acid to alkaline. It prefers moist but well-drained to poorly-drained conditions and can be grown in full sun or partial shade, making it suitable for exposed or sheltered sites. Its season of interest spans spring, summer, and winter.
About the genus
Juncus is a genus of monocotyledonous flowering plants, commonly known as rushes. It is the largest genus in the family Juncaceae, containing around 340 species.
Wikipedia contributors, "Juncus", CC BY-SA 4.0 — Juncus
Growing conditions
Best soil and position for Juncus
- Sunlight
- Full sun, Partial shade
- Soil type
- Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Poorly-drained, Well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H7
Plant details
Juncus inflexus size, habit and characteristics
- Plant type
- Grass Like
- Habit
- Clump forming
- Foliage
- Evergreen
- Height
- 0.5-1 metres
- Spread
- 0.5-1 metres
- Time to full height
- 2-5 years
- Suggested uses
- Cottage and informal garden, Patio and container plants, Flower borders and beds
Care notes
Pruning and caring for Juncus inflexus
- Propagation
- Seed in spring, Division from mid-spring to early summer
- Pest resistance
- Generally pest-free
- Disease resistance
- Generally disease-free
Frequently asked questions
Where is the best place to plant Juncus inflexus?
Juncus inflexus prefers full sun and partial shade. It suits exposed and sheltered positions.
What soil does Juncus inflexus need?
Juncus inflexus is adaptable and grows happily in most soil types, including clay, loam and sand. It is happy in soil of any pH. Aim for soil that stays moist but well-drained to poorly-drained to well-drained.
How big does Juncus inflexus grow?
Juncus inflexus reaches a height of 0.5-1 metres and a spread of 0.5-1 metres. It takes around 2-5 years to reach full size.
Is Juncus inflexus hardy in the UK?
Juncus inflexus has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.
How do I propagate Juncus inflexus?
Seed in spring, Division from mid-spring to early summer.