Sulphur-Flower Buckwheat vs Early Blue Violet - TreeTime.ca

Sulphur-Flower Buckwheat vs Early Blue Violet

Eriogonum umbellatum

Viola adunca

NOT AVAILABLE THIS SEASON - MIGHT RETURN

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Sulphur-Flower Buckwheat
Early Blue Violet

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.

Early Blue Violet is a low-growing native perennial wildflower valued for its striking early-spring blooms. The flowers range in color from vibrant blue to deep violet, often marked with pale highlights and fine white hairs. They provide an important early nectar source for pollinators and serve as a host plant for several fritillary butterfly species.

It spreads by both seed and rhizomes, gradually forming small colonies. Its dark green, heart-shaped leaves add ornamental appeal, and the plant shows some resistance to deer browsing. Early Blue Violet is well-suited to naturalization projects and pollinator-friendly gardens, and has also been used in coastal butterfly habitat restoration in the Pacific Northwest.

Sulphur-Flower Buckwheat Quick Facts

Early Blue Violet Quick Facts

Zone: 3a
Zone: 2a
Height: 0.2 m (0.5 ft)
Height: 0.1 m (0.3 ft)
Spread: 0.5 m (1.5 ft)
Spread: 0.2 m (0.5 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: dry, normal
Growth rate: medium
Growth rate: fast
Life span: short
Life span: short
Growth form: upright to spreading, clump-forming
Growth form: low growing, clump-forming
Spreading: seeds - low
Spreading: seeds - medium, rhizomes - medium
Maintenance: medium


Toxicity: rhizomes, fruit, seed poisonous to humans
Foliage: leathery
Fall colour: reddish bronze
Flowers: colour varies, typically white to yellow
Flowers: purple to blue-violet
Bloom time: mid spring to mid summer
Bloom time: mid spring to early summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC
Native to: AB, BC, SK, MB, ON, QC, NS, NB, YT, NT
Other Names: sulphur buckwheat, sulphur flower, wild buckwheat
Other Names: dog violet, hookedspur violet, sand violet, western blue violet