Grey Club-rush
Schoenoplectus tabernaemontani · Cyperaceae
The gardener's calendar
Ideal time to plant grey club-rush: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Evergreen, glaucous green to bluish
- Flowering
- Summer (June to September), discrete brown spikelets
- Mature size
- 1.2 to 1.8 m tall, upright and compact habit
- Growth rate
- Fast to moderate
- Hardiness
- Very hardy (down to -20 °C)
- Origin
- Europe, Asia and North Africa
- Soil type
- Moist to very moist, peaty or clayey
Care
Watering
Glaucous sedge is a wetland plant that thrives with constantly wet feet. In the garden, keep the soil permanently moist, ideally at the edge of a pond or in a container with a water reservoir. In pots, water generously and never let the substrate dry out completely.
Light Exposure
Place the sedge in sun or partial shade. It tolerates partial shade well but develops more vigorously in full light. Sunny exposure intensifies the glaucous tint of the foliage.
Soil and Substrate
Choose rich, humus-laden and constantly moist soil. A mix containing peat, compost and clay is ideal. In aquatic or pond settings, it adapts without difficulty.
Pruning and Maintenance
Perform a cleanup pruning in spring to remove winter-dead stems. You can lightly cut back the foliage after flowering to maintain a compact shape. No drastic pruning is necessary.
Fertilizing
An application of well-decomposed compost or organic fertilizer in spring is quite sufficient. In naturally rich moist environments, no added nutrients are essential. Avoid excess nitrogen, which promotes overly loose vegetation.
Diseases and Pests
Glaucous sedge is very robust and hardly susceptible to disease. In conditions of excessive stagnation or poor aeration, root rot may appear: improve drainage if needed. No notable specific pests.
Did you know?
Glaucous sedge is a plant traditionally used in European wetlands to stabilize riverbanks and create habitats for aquatic wildlife. Its name 'tabernaemontani' honors Jacob Theodor (Tabernaeus Montanus), a 16th-century German botanist passionate about classifying aquatic and marshy plants.
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
- Blue sedgeCarex panicea
- Spring sedgeCarex caryophyllea
- Pendulous sedgeCarex pendula
- Bird's-foot SedgeCarex ornithopoda
- Gray's sedgeCarex grayi
- Strict sedgeCarex stricta
Tips generated and checked by Viridia — adapt them to your local climate.