Overview
Carex elongata is a tufted, deciduous perennial sedge in the Cyperaceae family, growing 12–24 inches (30–60 cm) tall in dense tussocks 8–12 inches (20–30 cm) across without creeping rhizomes. Stems are triangular in cross-section (a key Carex character), sharply angled, rough near the top. Leaves are flat, grass-like, 2–4 mm wide, bright to mid-green, arching, shorter than the stems. The inflorescence is a narrow, elongated spike 1.5–3 inches (4–8 cm) long composed of 8–15 closely spaced, sessile spikelets — the elongated, cylindrical inflorescence shape is distinctive and the basis for the epithet. Spikelets are pale brown to golden-brown at maturity. The species occurs in wet woodlands, alder carr, stream margins, and fen meadows — characteristically in partial shade on moist to waterlogged, base-rich to mildly acidic peat or mineral soil. In Europe, it is an indicator species for alder (Alnus glutinosa) woodland on waterlogged soils. Does not tolerate prolonged drought. In the Pacific Northwest, it is not native but is occasionally grown in rain gardens and wet woodland plantings for its tussock-forming habit and tolerance of wet shade.
Native Range
Carex elongata is native across Europe, from the British Isles and Scandinavia east through Russia to western Siberia and the Caucasus. It occurs in wet alder woodland, fen carr, stream margins, and base-rich wet meadows from sea level to approximately 3,300 feet (1,000 m).Suggested Uses
Planted in wet woodland gardens, rain gardens, bog gardens, and along stream banks, spaced 10–12 inches (25–30 cm) apart. The tussock-forming habit creates textural interest at water margins. Effective beneath alders and willows in naturalistic wet-shade plantings. Tolerates seasonal flooding.How to Identify
Appearance
Size & Dimensions
Height1' - 2'
Width/Spread8" - 1'
Reaches mature size in approximately 3 years
Bloom Information
Flowering occurs from May through June. The elongated spike emerges green, with anthers exserted for wind pollination over a 2–3 week period. Spikelets ripen to pale golden-brown by July–August, persisting through autumn. Utricles (fruit-enclosing sacs) are 3–4 mm long, ovoid, with a short beak.Detailed Descriptions
Flower Description
Pale brown to golden-brownFoliage Description
Bright to mid-greenGrowing Conditions
Sun Requirements
Requires 2-5 hours of direct sunlight daily
• Full Sun: 6+ hours of direct sunlight
• Partial Shade: 3-6 hours of direct sunlight
• Full Shade: Less than 3 hours of direct sunlight
Care & Maintenance
Care Guide
Plant in partial to full shade in consistently moist to waterlogged, humus-rich soil with a pH of 5.5–7.0. Space 10–12 inches (25–30 cm) apart. Ideal for stream margins, bog gardens, rain garden overflow zones, and beneath moisture-loving trees such as Alnus and Salix. Water consistently — do not allow the root zone to dry. No fertilisation needed in organically rich soil. The tussock habit develops fully within 2–3 years from a small plug.Pruning
Cut back dead foliage to 2–3 inches (5–8 cm) above the tussock crown in late winter before new growth emerges. Comb out any remaining dead leaves by hand. No other pruning is required.Pruning Schedule
J
F
M
A
M
J
J
A
S
O
N
D
early spring
Maintenance Level
very lowContainer Growing
✓ Suitable for container growing
Minimum container size: 3 gallons