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Carex demissa

Carex demissa · Cyperaceae

The gardener's calendar

The right move for September

Ideal time to plant carex demissa: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.

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ID card

Family
Cyperaceae
Type
Sedge (Carex)
Foliage
Evergreen
Flowering
Spring (April-May)
Mature size
30 to 50 cm tall
Hardiness
Very hardy (down to -15°C)
Origin
Temperate and mountainous Europe
Soil type
Moist to marshy, peaty

Care

Light

Carex demissa prefers shaded to partially shaded areas. It tolerates moist spots in partial shade very well. Avoid full sun, which can dry out the foliage. This sedge adapts particularly well to woodland garden areas or waterside locations.

Watering

Keep the soil consistently moist, even slightly waterlogged, as this species thrives in marshy conditions. During dry periods, water regularly to prevent complete drying out. In rainy regions, proper drainage usually suffices.

Soil Preparation

Choose soil rich in organic matter, peaty or silty-clay. A neutral to slightly acidic pH works well. Enrich the soil with compost or peat before planting to improve moisture retention.

Pruning and Maintenance

Cut back dead or damaged foliage in early spring before new growth appears. Pruning isn't strictly necessary, but regular tidying maintains the plant's appearance. Divide clumps every 3 to 4 years to rejuvenate the plant.

Fertilizing

A modest application of well-decomposed compost each spring is more than enough. Carex demissa is not demanding and prefers naturally organic-rich soils. Avoid overly concentrated fertilizers, which can harm wetland plants.

Diseases and Pests

This sedge is generally robust and seldom troubled by disease when properly sited. Poor drainage or excessive moisture mismanagement can encourage rot. Watch for waterlogging in winter in areas with weak drainage.

Did you know?

Carex demissa is a key species in peatlands and wetlands across temperate Europe. Its name 'demissa' means 'drooping' in Latin, referring to the slightly pendant form of its flower spikes. It plays a major ecological role in stabilizing marshy soils and providing refuge for the specialized microfauna of wetland habitats.

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.

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Tips generated and checked by Viridia — adapt them to your local climate.