Greater pond-sedge (Carex riparia)

Greater pond-sedge

Also known as: Streambank sedge

The leaves of greater pond-sedge are up to 1.6 m long by 6 to 20 mm wide, glaucous, and narrowing at the tip to a rigorous point. The stems are 61 to 130 cm tall, rough, and sharply triangular in section, making Carex riparia Britain's largest species of Carex. They bear 1–5 female spikes, each nearly cylindrical and generally overlapping with the next, and 3–6 more densely arranged male spikes. Each female spike is 3 to 10 cm long, often with some male flowers at the tip, while male spikes are 2 to 6 cm long. The fruits of Carex riparia are utricles, 5 to 8 mm long, with an inflated ovoid shape.

Scientific classification

Species

Greater pond-sedge (Carex riparia)

Grasses, sedges and allies

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Perennial, Annual

Lifespan

Grass

Plant Type

Late spring, Summer

Bloom Time

1.2 m

Plant Height

Brown

Fruit Color

Brown

Flower Color

Green, Gray, Silver, Brown

Stem Color

Deciduous

Leaf type

20 - 35 ℃

Ideal Temperature

Images of Greater pond-sedge

Distribution of Greater pond-sedge

Distribution Map

Greater pond-sedge, a plant species with a wide native range, primarily flourishes in temperate and subarctic regions across continents such as Europe and parts of Asia. It is also native to the northern fringes of Africa. Its introduction and cultivation have expanded its reach, with greater pond-sedge now also found in territories like New Zealand.

Native

Cultivated

Invasive

Introduced

No species reported

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Hemisphere Trend Curve

Northern

Sorthern

Culture

Interesting Facts

In 1754, Lin Nai founded the true sedge genus. True sedge is also one of the main components of the flora in China. It is the dominant grass species in the lowest forest layer in many areas. In some forests, the lower vegetation is mostly true sedge.

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Care Guide for Greater pond-sedge

Twice per week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Greater pond-sedge thrives in wet, marshy environments, requiring consistent humidity and balanced moisture. Watering twice a week mimics its natural habitat. It is often cultivated outdoors in water gardens, stabilizing soil and supporting local ecosystems.

Fertilize: Fertilize greater pond-sedge annually with a 2-inch layer of mulch or compost, avoiding contact with the base to prevent rot. Increased fertilization isn’t needed, and seasonal adjustments aren’t necessary. Over-fertilizing can harm greater pond-sedge, so follow recommended amounts and monitor growth for optimal health.

Pruning: Greater pond-sedge thrives with early spring pruning to remove dead stems and control growth. Regular maintenance enhances air circulation and appearance while preventing overcrowding. Clean tools are vital to preventing disease, and pruning helps maintain size and shape for a vibrant garden feature.

Propagation: Greater pond-sedge thrives in wetland habitats and propagates via root division during growth. Ensure each section has roots and shoots before replanting in moist, fertile soil. Regular watering and attention to soil moisture are crucial for establishing new greater pond-sedge plants.

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