Phantom Hydrangea vs Cow Parsnip - TreeTime.ca

Phantom Hydrangea vs Cow Parsnip

Hydrangea paniculata Phantom

Heracleum maximum

CUSTOM GROW

CUSTOM GROW

Phantom Hydrangea
Cow Parsnip

Phantom Hydrangea is a striking deciduous shrub with impressive blooms. It is multi-stemmed and produces pale green flowers that fade to white and soft pink as they mature. These flower clusters can reach up to 15” (40cm) long and while other shrubs will droop from the flowers' weight, Phantom Hydrangea has sturdy stems that support them.

This adaptable shrub will make a beautiful addition to your yard as a flowering hedge or as an ornamental plant on its own. Try pruning the flowers after they are spent to get even larger flower heads.

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.

Phantom Hydrangea Quick Facts

Cow Parsnip Quick Facts

Zone: 3b
Zone: 2a
Height: 1.8 m (6 ft)
Height: 1.8 m (6 ft)
Spread: 1.5 m (5 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: medium


Toxicity: sap causes skin irritation
Foliage: very large, palmate leaves
Flowers: large white flower clusters
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