Carex ferruginea
Carex ferruginea · Cyperaceae
The gardener's calendar
Ideal time to plant carex ferruginea: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Family
- Cyperaceae (Carex)
- Foliage
- Evergreen, finely linear, copper to russet-toned
- Flowering
- April to May, discreetly rust-brown spikes
- Adult size
- 20 to 40 cm tall, 15 to 25 cm wide
- Growth
- Slow to moderate
- Hardiness
- Hardy down to -15°C
- Origin
- Alps and mountains of central Europe
- Soil type
- Well-drained, fresh, slightly acidic to neutral
Care
Light and climate
Position Carex ferruginea in part shade or light shade, in a location sheltered from dry winds. It appreciates a cool, humid climate, reflecting its alpine origins. Avoid full sun exposures that dull its foliage and slow its growth.
Soil and drainage
Prepare soil rich in organic matter, well-drained yet remaining fresh. Adding peat or leaf mould improves moisture retention while promoting slight acidity. Avoid compacted soils or those with stagnant water.
Watering
Keep the soil slightly moist during the growing season (spring-summer), without allowing water to stagnate. Reduce watering in winter, but never let the substrate dry out completely. Organic mulch helps regulate soil moisture and temperature.
Fertilization
Apply a light feeding of balanced or organic fertilizer (well-decomposed compost) in spring. This sedge is not demanding; excess nitrogen promotes soft foliage at the expense of its characteristic coloring.
Pruning and tidying
Regularly remove dead or damaged foliage, especially in late winter before new growth. Gentle hand-combing removes debris. Avoid drastic pruning: this plant naturally develops into a compact clump.
Pests and diseases
Carex ferruginea is generally disease-free. Stagnant excess moisture can promote root rot or fungal issues. Ensure good drainage and air circulation. Occasionally inspect foliage; pests specific to sedges are rare under suitable conditions.
Did you know?
Carex ferruginea takes its scientific name from its characteristic color: "ferruginea" literally means "rust-colored." This copper-russet hue is particularly striking in winter and early spring, making it a valuable aesthetic asset in shaded gardens. Alpine sedges have long fascinated alpine botanists because of their extreme diversity and remarkable adaptation to rocky, mountainous terrain.
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.