Yellow Hedysarum vs Cow Parsnip - TreeTime.ca

Yellow Hedysarum vs Cow Parsnip

Hedysarum sulphurescens

Heracleum maximum

CUSTOM GROW

CUSTOM GROW

Yellow Hedysarum
Cow Parsnip

Yellow Hedysarum is a native perennial wildflower recognised for its clusters of bright yellow pea-like blooms. It adds colour to grasslands, roadsides, and open woods. It is also a nitrogen fixer, which helps improve soil fertility. Because of its deep root system, it contributes to slope and soil stabilisation.

The plant provides forage for wildlife and cover for small animals, especially its roots. Its flowers attract pollinators such as bees.

Yellow Hedysarum plays an important role in prairie and foothill ecosystems. It is well-suited for ecological restoration, naturalisation, pollinator gardens, and erosion control projects.

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 Hedysarum Quick Facts

Cow Parsnip Quick Facts

Zone: 2b
Zone: 2a
Height: 0.5 m (1.5 ft)
Height: 1.8 m (6 ft)
Spread: 0.2 m (0.8 ft)
Spread: 1.2 m (4 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: normal, wet
Growth rate: fast
Growth rate: fast
Life span: short
Life span: short
Growth form: ascending to upright
Growth form: upright
Spreading: seeds - low
Spreading: seeds - low


Toxicity: sap causes skin irritation
Foliage: very large, palmate leaves
Flowers: creamy yellow, in dense spikes
Flowers: large clusters of white flowers
Bloom time: late spring to summer
Bloom time: 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, NL, YT, NT, PE
Other Names: sulphur hedysarum, sulphur sweet-vetch, yellow sweet-vetch
Other Names: american cow parsnip, common cow parsnip