Birch Leaf Spirea vs Cow Parsnip - TreeTime.ca

Birch Leaf Spirea vs Cow Parsnip

Heracleum maximum

Spiraea betulifolia

CUSTOM GROW

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Cow Parsnip
Birch Leaf Spirea

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.

Birch Leaf Meadowsweet is a small, rounded shrub, reaching 3 to 4 feet high.

In the early summer, white flowers emerge with dark green foliage. Come fall, birch-like leaves turn a kaleidoscope of red, orange, and purple adding seasonal interest.

Native to Japan and Eastern Asia, this dwarf shrub attracts butterflies and is an excellent option for the front row of a shrub border.

Cow Parsnip Quick Facts

Birch Leaf Spirea Quick Facts

Zone: 2a
Zone: 4a
Height: 1.8 m (6 ft)
Height: 0.9 m (3 ft)
Spread: 1.2 m (4 ft)
Spread: 0.9 m (3 ft)
Light: partial shade, full sun
Light: full sun
Moisture: normal, wet
Moisture: normal, wet
Growth rate: fast
Growth rate: medium
Life span: short
Life span: short
Growth form: upright
Spreading: seeds - low
Suckering: none

Toxicity: sap causes skin irritation

Foliage: very large, palmate leaves
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: american cow parsnip, common cow parsnip
Other Names: birch leaf meadowsweet, shiny leaf spirea, white spirea