Wheat Sedge vs Sulphur-Flower Buckwheat - TreeTime.ca

Wheat Sedge vs Sulphur-Flower Buckwheat

Carex atherodes

Eriogonum umbellatum

CUSTOM GROW

CUSTOM GROW

Wheat Sedge
Sulphur-Flower Buckwheat

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.

Sulphur-Flower Buckwheat is a native perennial wildflower known for its dense clusters of cream to yellow flowers. The long-lasting blooms persist from late spring into summer, providing an extended nectar source for a variety of pollinators. The flower buds are often red-tinted before opening. As the blooms age, they shift to orange or red, adding seasonal interest and making them well-suited to dried flower arrangements. Its seeds are also eaten by birds, adding to its ecological value.

Depending on climate and conditions, Sulphur-Flower Buckwheat may be evergreen to semi-evergreen, or its foliage may turn red during fall. Its deep roots and spreading growth stabilize rocky or sandy soils, making it useful for erosion control. Exceptionally hardy once established, it requires little care and thrives in challenging environments, making it an excellent choice for pollinator gardens, naturalization, and ecological restoration projects.

Wheat Sedge Quick Facts

Sulphur-Flower Buckwheat Quick Facts

Zone: 2a
Zone: 3a
Height: 0.8 m (2.5 ft)
Height: 0.2 m (0.5 ft)
Spread: 0.5 m (1.5 ft)
Spread: 0.5 m (1.5 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: wet
Moisture: dry, normal
Growth rate: fast
Growth rate: medium
Life span: short
Life span: short
Growth form: upright, colony-forming
Growth form: upright to spreading, clump-forming
Spreading: rhizomes - high, seeds - low
Spreading: seeds - low


Foliage: leathery
Fall colour: reddish bronze
Flowers: colour varies, typically white to yellow
Bloom time: mid spring to mid summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, QC, YT, NT
Native to: AB, BC
Other Names: awned sedge, hairy leaved lake sedge, slough sedge
Other Names: sulphur buckwheat, sulphur flower, wild buckwheat