Rosy Lights Rhododendron (Azalea) vs Cow Parsnip - TreeTime.ca

Rosy Lights Rhododendron (Azalea) vs Cow Parsnip

Heracleum maximum

Rhododendron x Rosy Lights

CUSTOM GROW

CUSTOM GROW

Cow Parsnip
Rosy Lights Rhododendron (Azalea)

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.

Rosy Lights Rhododendron is the next flowering, deciduous shrub you need in your garden. It is incredibly cold hardy and produces fragrant, bright pink blooms in late spring. Pruning is recommended after the flowers are finished to control the size and shape of this shrub.

Try Rosy Lights Rhododendron when planning your next hedge/screen, or plant it on its own as a striking accent plant. Part of the Northern Lights Series.

Cow Parsnip Quick Facts

Rosy Lights Rhododendron (Azalea) Quick Facts

Zone: 2a
Zone: 4a
Height: 1.8 m (6 ft)
Height: 1.5 m (5 ft)
Spread: 1.2 m (4 ft)
Spread: 1.2 m (4 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: normal, wet
Moisture: normal, wet
Growth rate: fast
Growth rate: medium
Life span: short
Life span: medium
Growth form: upright
Spreading: seeds - low
Suckering: low
Maintenance: medium

Toxicity: sap causes skin irritation

Toxicity: All parts of a rhododendron bush, including the leaves, stems and blooms, are toxic to cats, dogs, and horses.
Foliage: very large, palmate leaves
Fall colour: Maroon
Flowers: large clusters of white flowers
Flowers: large, pink
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