Neon Flash Spiraea vs Cow Parsnip - TreeTime.ca

Neon Flash Spiraea vs Cow Parsnip

Spiraea japonica Neon Flash

Heracleum maximum

NOT AVAILABLE THIS SEASON - MIGHT RETURN

CUSTOM GROW

Neon Flash Spiraea
Cow Parsnip

Neon Flash Spiraea is a colorful, low maintenance, and multi-purpose shrub.

Late spring to fall you'll be drawn to its vibrant neon red blooms that rest on a neat mound of green foliage. If deer and rabbit are an issue on your property, consider planting Neon Flash Spiraea for its deer/rabbit resistance. Its tolerance of a variety of well-drained soils makes it an ideal foundation, landscaping, or border plant.

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.

Neon Flash Spiraea Quick Facts

Cow Parsnip Quick Facts

Zone: 3a
Zone: 2a
Height: 0.9 m (3 ft)
Height: 1.8 m (6 ft)
Spread: 0.9 m (3 ft)
Spread: 1.2 m (4 ft)
Light: full sun
Light: partial shade, full sun
Moisture: normal
Moisture: normal, wet
Growth rate: medium
Growth rate: fast
Life span: short
Life span: short
Growth form: upright
Spreading: seeds - low
Suckering: low


Toxicity: sap causes skin irritation
Foliage: very large, palmate leaves
Fall colour: burgundy bronze
Flowers: pale to bright pink
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