Sharp-flowered rush
Juncus articulatus · Juncaceae
The gardener's calendar
Ideal time to plant sharp-flowered rush: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous to semi-evergreen
- Flowering
- June to August
- Mature size
- 30 to 60 cm in height
- Growth
- Moderate to rapid
- Hardiness
- Very hardy (-15°C and below)
- Origin
- Europe, Asia and North Africa
- Soil type
- Moist to wet, tolerant of acidity
Care
Watering
Shiny-fruited rush appreciates moist, even marshy conditions. Keep the soil constantly moist without prolonged drying out. It tolerates flooded areas and waterlogged soils well. In pots, water regularly to prevent the soil from drying out.
Light Exposure
Plant in full sun or partial shade for optimal growth. This hardy plant copes well with varying light conditions. A sunny exposure promotes more abundant flowering and a compact form.
Soil
Rush prefers moist, muddy or peaty soils, slightly acidic to neutral. It adapts very well to the edges of water features, ditches and wet areas. Enrich the soil with organic matter to maintain moisture.
Pruning and Cutting
Prune after flowering in late autumn or early winter to remove dry stems. This encourages the emergence of new shoots in spring. No severe pruning needed: light cutting is sufficient.
Fertiliser
Rush is undemanding in terms of nutrients. A moderate application of compost or organic matter in spring is more than enough. Avoid overly rich fertilisers which could upset its natural balance.
Diseases and Pests
This robust plant is rarely affected by major diseases or pests. Good drainage and adequate air circulation are sufficient to prevent problems. In excessively moist conditions, watch for possible mould, which can be treated by improving air circulation.
Did you know?
Shiny-fruited rush gets its common name from its glossy capsules that remain on the plant for a long time. Used since antiquity to cover house floors before the advent of carpets, this rush was also exploited to make woven chairs and waterproof mats. Its smooth, lustrous fruits, from which emerges a characteristic brown dot, make it a subtle ornamental plant prized in wet gardens.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- Great woodrushLuzula sylvatica
- Snowy WoodrushLuzula nivea
- Wood rushLuzula multiflora
- Compact rushJuncus conglomeratus
- Juncus inflexusJuncus inflexus
- Toad rushJuncus bufonius
Tips generated and checked by Viridia — adapt them to your local climate.