Phantom Hydrangea vs Swamp Rose Mallow (Hibiscus) - TreeTime.ca

Phantom Hydrangea vs Swamp Rose Mallow (Hibiscus)

Hibiscus moscheutos

Hydrangea paniculata Phantom

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Swamp Rose Mallow (Hibiscus)
Phantom Hydrangea

Swamp Rose Mallow (Hibiscus) has large white-pink showy flowers which attract hummingbirds and pollinators to your yard. It is a tall, fast growing perennial shrub. The flowers typically only last 1-2 days, but the plant will continue to rebloom throughout the season.

This hibiscus tolerates heat and humidity but does not do well when exposed to wind. Make sure the plant has access to lots of moisture for better flowering.

The Swamp Rose Mallow (Hibiscus) is also known as the dinner plate hibiscus because it can grow incredibly large flowers, as big as dinner plates.

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.

Swamp Rose Mallow (Hibiscus) Quick Facts

Phantom Hydrangea Quick Facts

Zone: 5a
Zone: 3b
Height: 1.5 m (5 ft)
Height: 1.8 m (6 ft)
Spread: 0.9 m (3 ft)
Spread: 1.5 m (5 ft)
Light: full sun
Light: partial shade, full sun
Moisture: normal, wet
Moisture: normal
Growth rate: fast
Growth rate: medium
Life span: short
Life span: medium
Suckering: low
Suckering: medium


Flowers: pink-red
Flowers: large white flower clusters
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: ON
Other Names: crimson-eyed rose-mallow, dinner plate hibiscus, eastern rosemallow, hardy hibiscus, marsh mallow, marshmallow hibiscus, sea hollyhock, swamp mallow, swamp rose hibiscus