Pocket BotanistPlant guide
Green-ribbed sedge.
Carex binervis
Pronounced KAIR-eks bi-NER-vis
Also known as Green-Ribbed Sedge, Moor Sedge
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This hardy perennial sedge is a lovely choice for adding texture to damp, acidic garden spots. It forms neat, grassy clumps that look great in naturalistic plantings or near water features. You will find it is quite adaptable to various moisture levels once it is established.
At a glance
- Care level
- Easy
- Plant type
- Sedge
- Light
- Full sun to partial shade
- Indoor light
- Bright indirect
- Water
- Every 3 to 7 days
- Mature size
- 60 cm
- Growth rate
- Medium
- Hardiness
- USDA 6 to 9
- Bloom time
- Late spring to early summer
Care
Keep the soil consistently moist to mimic its natural boggy habitat. Watch for browning leaf tips, which often signal that the plant is drying out too much. You can trim back old foliage in late winter to make room for fresh spring growth.
- Watering
- Keep the soil damp at all times, as this plant does not like to dry out completely.
- Feeding
- A light application of balanced fertilizer in early spring is plenty to support its growth.
- Pruning
- Cut back dead or damaged foliage in late winter before new growth begins.
- Repotting
- Repot only when the plant becomes root bound or the clump needs dividing to maintain vigor.
- Soil
- Moist, acidic, peaty soil
- Soil pH
- Acidic
- Temperature
- -23 to 25°C
- Humidity
- 60 to 90%
Safety
- People
- There are no known toxic properties for humans.
- Children
- The sharp, serrated leaf margins can cause small cuts on children's hands.
- Contact allergens
- The leaf edges can be sharp and may cause minor skin abrasions.
- Airborne allergens
- The wind dispersed pollen may cause mild reactions in sensitive individuals.
- Edibility
- This plant is not considered edible for humans.
How to identify it
- Dark green, narrow, arching leaves
- Distinctive two prominent veins on fruit
- Clump forming growth habit
- Slender, upright flowering spikes
- Height
- 0.3 to 0.8m
- Spread
- 0.3 to 0.6m
- Leaves
- dark green, evergreen
- Flowers
- brown, green, 1 to 5cm
- Fruit
- brown, Late summer
Problems to watch for
- Rust · Fungal spots may appear on leaves during periods of high humidity.
Check your green-ribbed sedge from a photo
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Growing it
- Propagation
- division, seed
- When to plant
- spring, autumn
Group this sedge with other acid loving plants to create a low maintenance heathland style border.
Grows well with
- Heather · They share similar requirements for acidic, moist soil.
- Purple Moor Grass · It provides a nice textural contrast in a bog garden setting.
Similar species
- Pendulous Sedge · It is a much larger sedge with similar drooping flower spikes.
Science
- Family
- Cyperaceae
- Genus
- Carex
- Order
- Poales
- Class
- Liliopsida
- Native range
- Western and Central Europe.
- Conservation
- It is common and widespread in its native range and not of conservation concern.
It is a hardy perennial that dominates acidic heathlands and moorlands by outcompeting less tolerant species.
- Value to wildlife
- larval host plant, seeds for birds
- Pollinators
- bees, butterflies
- Uses
- ornamental grass, erosion control, bog garden plant
Through the year
Ecological indicators
- Salinity
- 1/9
- Soil reaction
- 3/9
- Light
- 5/9
- Temperature
- 4/9
- Moisture
- 7/9
- Nutrients
- 2/9
Taxonomy resolved against GBIF.
Questions people ask
- Does it need full sun?
- It prefers partial shade but will tolerate full sun if the soil stays moist.
- How do I prune it?
- Simply comb out dead leaves in early spring to keep the clump tidy.
Where the name comes from
Carex is the ancient Latin name for sedges, while binervis describes the two distinct nerves found on the perigynium.
Good to know
- It thrives in acidic, peaty soils where many other plants struggle.
- The name binervis refers to the two prominent veins on the seed husks.
- It forms neat, dense clumps that look great in naturalistic gardens.
Keep your green-ribbed sedge growing
This page is a general guide. Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked.
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This guide was generated with AI on and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.