Snowball Viburnum vs Cow Parsnip - TreeTime.ca

Snowball Viburnum vs Cow Parsnip

Viburnum opulus roseum

Heracleum maximum

CUSTOM GROW

Snowball Viburnum
Cow Parsnip

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.

Cow Parsnip is a native perennial wildflower known for its tall growth, very large leaves, and broad clusters of white flowers. The abundant blossoms provide nectar and pollen for a wide variety of pollinators, including bees and butterflies. Birds and small mammals feed on its seeds, while the foliage serves as a larval host for certain butterfly species.

Cow Parsnip is often among the first native perennials to establish in disturbed or open sites. It typically grows in moist meadows, along streambanks, forest edges, and roadsides. Although usually a short-lived perennial or biennial, it readily self-seeds and maintains strong populations where conditions are favorable.

Cow Parsnip is the only native Heracleum in North America and should not be confused with the highly invasive Giant Hogweed (H. mantegazzianum).

Note: The sap of the Cow Parsnip can cause phytodermatitis when exposed to ultraviolet light (sunlight). This can cause rashes or even burns. Care should be taken if pruning or handling this plant.

Snowball Viburnum Quick Facts

Cow Parsnip Quick Facts

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Zone: 3b
Zone: 2a
Height: 3 m (10 ft)
Height: 1.8 m (6 ft)
Spread: 3 m (10 ft)
Spread: 1.2 m (4 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: normal
Moisture: normal, wet
Growth rate: medium
Growth rate: fast
Life span: medium
Life span: short
Growth form: upright
Spreading: seeds - low
Suckering: low


Toxicity: sap causes skin irritation
Foliage: very large, palmate leaves
Fall colour: purplish-red
Bark: gold to gray
Flowers: white
Flowers: large clusters of white flowers
Bloom time: spring to early summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, PE
Other Names: european cranberrybush, guelder rose, snowball bush, snowball tree
Other Names: american cow parsnip, common cow parsnip