Greater bladder sedge (Carex intumescens)

Greater bladder sedge

The greater bladder sedge (Carex intumescens) favors moist, shady conditions. It forms grassy clumps, and its fruit is enclosed in shiny teardrop-shaped sacs (the eponymous “bladders”) with spiky tips. The sacs can float on water, which aids in seed dispersal. It provides food for many insects, birds, and mammals.

Scientific classification

Species

Greater bladder sedge (Carex intumescens)

Grasses, sedges and allies

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Summer, Fall

Harvest Time

30 cm to 76 cm

Plant Height

2 cm to 15 cm

Flower Size

Semi-evergreen

Leaf type

5 - 32 ℃

Ideal Temperature

Spring, Summer, Fall

Growth Season

Moderate

Growth Rate

Images of Greater bladder sedge

Attributes of Greater bladder sedge

Growth Rate

At a moderate rate, greater bladder sedge actively enhances its structural formation during Spring, Summer, and Fall. This pace facilitates a balanced increase in height and leaf density, allowing it to survive seasonal variations. Through its growth season, despite not necessarily flowering profusely, this plant exhibits a gradual but pronounced progression, contributing to a resilient ecological presence.

Distribution of Greater bladder sedge

Distribution Map

Greater bladder sedge is a plant native to the temperate regions of North America. It has expanded its presence to northern Europe, where it has been introduced. Its distribution envelopes environments ranging from wetlands to woodlands within these broad geographic expanses.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Forests, forest openings, thickets, wet meadows, ditches

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 bladder sedge

Every week

Water

Partial sun

Sunlight

5 - 32 ℃

Ideal Temperature

Water: Greater bladder sedge thrives in moist environments and requires stable water supply for healthy growth. It is moderately drought-tolerant, performing best with even moisture. Weekly watering is optimal, and natural rainfall enhances its growth cycles as an herbaceous perennial commonly grown outdoors.

Fertilize: To promote greater bladder sedge's growth, use balanced fertilizers prioritizing nitrogen, applying every 4-6 weeks during spring and summer. In autumn, reduce frequency. Follow package instructions carefully to prevent root burn, and monitor for signs of deficiencies or excess for optimal plant health.

Pruning: Greater bladder sedge exhibits stem swelling and prefers wet conditions. Prune old foliage in early to late spring for new growth and better air circulation. Regular pruning controls size and prevents disease. Use clean, sharp tools for precise cuts to enhance vigor and appearance.

Propagation: The perennial wetland species greater bladder sedge efficiently colonizes moist areas, forming clumps. Propagation through early division preserves root integrity. Maintain soil moisture post-division for vigorous regrowth, and consider initial cultivation in controlled settings before permanent transplanting.

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