Snowball Viburnum vs Sulphur-Flower Buckwheat - TreeTime.ca

Snowball Viburnum vs Sulphur-Flower Buckwheat

Viburnum opulus roseum

Eriogonum umbellatum

COMING SOON

(new stock expected: fall of 2025)

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Snowball Viburnum
Sulphur-Flower Buckwheat

Snowball Viburnum is a popular ornamental shrub with prolific flowering. This plant is prized for its round clusters of white flowers that resemble snowballs, delighting children and adults. In fall, its leaves turn vibrant shades of red.

Snowball Viburnum is sought after as a single accent shrub, but can also make a dense hedge or privacy screen.

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.

Snowball Viburnum Quick Facts

Sulphur-Flower Buckwheat Quick Facts

Zone: 3b
Zone: 3a
Height: 3 m (10 ft)
Height: 0.2 m (0.5 ft)
Spread: 3 m (10 ft)
Spread: 0.5 m (1.5 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: normal
Moisture: dry, normal
Growth rate: medium
Growth rate: medium
Life span: medium
Life span: short
Growth form: upright to spreading, clump-forming
Spreading: seeds - low
Suckering: low


Foliage: leathery
Fall colour: purplish-red
Fall colour: reddish bronze
Bark: gold to gray
Flowers: white
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
Other Names: european cranberrybush, guelder rose, snowball bush, snowball tree
Other Names: sulphur buckwheat, sulphur flower, wild buckwheat