Wheat Sedge vs Water Arum - TreeTime.ca

Wheat Sedge vs Water Arum

Carex atherodes

Calla palustris

CUSTOM GROW

CUSTOM GROW

Wheat Sedge
Water Arum

Wheat Sedge is a native perennial sedge commonly found in wetlands, ditches, and along shorelines. It thrives in saturated soils, spreading by rhizomes to form large colonies that stabilize both soils and shorelines. This makes it valuable for wetland and riparian plantings.

Its distinctive, wheat-like seed spikes add seasonal character while providing food for waterfowl, and its dense clumps supply cover and nesting habitat for birds and small animals. Together, these traits make Wheat Sedge an important species for enhancing biodiversity and supporting healthy wetland ecosystems.

Water Arum is a native perennial wetland plant known for its showy white oval sheaths (spathe) that surround a yellow-green, cylindrical flower spike (spadix). It has large, oblong, heart-shaped leaves on stems that rise above the water from shallow, spreading rhizomes. The blossoms are followed in late summer by tiny, pear-shaped fruits that ripen to bright red, adding ornamental interest to wet habitats.

Water Arum provides food for birds and small mammals that eat its berries, and its flowers attract pollinators. It can tolerate cold climates and forms colonies in shallow water and saturated soils. It is well-suited for ecological restoration, riparian planting, naturalisation, and habitat projects in wet and shaded environments.

Wheat Sedge Quick Facts

Water Arum Quick Facts

Zone: 2a
Zone: 1b
Height: 0.8 m (2.5 ft)
Height: 0.2 m (0.8 ft)
Spread: 0.5 m (1.5 ft)
Spread: 0.2 m (0.8 ft)
Light: partial shade, full sun
Light: shade, partial shade
Moisture: wet
Moisture: wet
Growth rate: fast
Growth rate: medium
Life span: short
Life span: short
Growth form: upright, colony-forming
Growth form: colony-forming
Spreading: rhizomes - high, seeds - low
Spreading: rhizomes - medium, seeds - low


Toxicity: toxic if ingested
Flowers: white sheath around and yellow spike
Bloom time: spring to summer
Berries: red, in clusters
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, QC, YT, NT
Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, PE
Other Names: awned sedge, hairy leaved lake sedge, slough sedge
Other Names: bog arum, swamp lily, wild calla, wild dragon