Yellow Mountain Avens vs Cow Parsnip - TreeTime.ca

Yellow Mountain Avens vs Cow Parsnip

Dryas drummondii

Heracleum maximum

CUSTOM GROW

CUSTOM GROW

Yellow Mountain Avens
Cow Parsnip

Yellow Mountain Avens is a native perennial wildflower with bright yellow buttercup-like blooms. The nectar-rich flowers attract a variety of pollinators, including bees and butterflies. By thriving at higher elevations, it helps sustain pollinator populations and provides one of the earliest sources of nectar and pollen in alpine habitats.

As a nitrogen-fixing plant, Yellow Mountain Avens enriches soil fertility and supports the growth of surrounding vegetation. It forms dense, spreading mats of evergreen foliage that act as a groundcover and help stabilize soil. Often among the first species to establish in disturbed alpine sites such as glacial outwash or landslides, it is well-suited for alpine revegetation, erosion control, naturalization, and ecological restoration projects in harsh, rocky environments.

Cow Parsnip is a native perennial plant that grows tall with very large leaves and broad clusters of white flowers. It grows quickly, providing quick cover in disturbed areas.
Its flowers are large and plentiful, providing nectar and pollen for bees, flies, and butterflies. Its seeds are eaten by birds and small mammals. The young shoots of the plant are edible, but care must be taken as the sap of this plant can cause skin irritation (see below).
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.

Yellow Mountain Avens Quick Facts

Cow Parsnip Quick Facts

Zone: 1b
Zone: 2a
Height: 0.2 m (0.5 ft)
Height: 1.8 m (6 ft)
Spread: 0.3 m (1.0 ft)
Spread: 1.2 m (4 ft)
Light: full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: normal, wet
Growth rate: medium
Growth rate: fast
Life span: short
Life span: short
Growth form: mat-forming, creeping
Growth form: upright
Spreading: stolons - medium, seeds - low
Spreading: seeds - low


Toxicity: sap causes skin irritation
Foliage: evergreen, leathery
Foliage: very large, palmate leaves
Flowers: yellow, buttercup-like, nodding
Flowers: large clusters of white flowers
Bloom time: spring to summer
Bloom time: spring to early summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, ON, QC, NB, NL, YT, NT
Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, PE
Other Names: drummonds dryad, drummonds mountain avens, yellow dryad
Other Names: american cow parsnip, common cow parsnip