Sulphur-Flower Buckwheat vs Prairie Crocus - TreeTime.ca

Sulphur-Flower Buckwheat vs Prairie Crocus

Pulsatilla nuttalliana (Anemone patens)

Eriogonum umbellatum

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Prairie Crocus
Sulphur-Flower Buckwheat

Prairie Crocus is a native perennial wildflower that is often considered one of the first signs of spring. The flowers can range from purple, pale blue, to white and often appear before the snow has fully melted. It can bloom a month earlier than other spring flowers, providing an early source of pollen for a variety of pollinators.

The plant is covered in woolly white hairs, including the finely divided leaves, giving them a silvery appearance. Prairie Crocus leaves do not fully emerge until after it has bloomed. The spent blooms transform into fluffy, feathery seed heads. During the hot summer months, the Prairie Crocus goes dormant and will repeat its life cycle the following spring.

The Prairie Crocus is Manitoba’s provincial flower.

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.

Prairie Crocus Quick Facts

Sulphur-Flower Buckwheat Quick Facts

Zone: 1b
Zone: 3a
Height: 0.2 m (0.5 ft)
Height: 0.2 m (0.5 ft)
Spread: 0.2 m (0.5 ft)
Spread: 0.5 m (1.5 ft)
Light: full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: dry, normal
Growth rate: fast
Growth rate: medium
Life span: short
Life span: short
Growth form: low growing, clump-forming
Growth form: upright to spreading, clump-forming
Spreading: seeds - medium, rhizomes - low
Spreading: seeds - low

Toxicity: all parts toxic if eaten, sap can irritate skin

Foliage: fuzzy, finely divided leaves
Foliage: leathery
Fall colour: reddish bronze
Flowers: pale purple, cup-shaped
Flowers: colour varies, typically white to yellow
Bloom time: early spring
Bloom time: mid spring to mid summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, YT, NT, NU
Native to: AB, BC
Other Names: american pasqueflower, crocus anemone, pasqueflower, prairie pasqueflower, prairie smoke
Other Names: sulphur buckwheat, sulphur flower, wild buckwheat