Swamp Rose Mallow (Hibiscus) vs Water Arum - TreeTime.ca

Swamp Rose Mallow (Hibiscus) vs Water Arum

Calla palustris

Hibiscus moscheutos

CUSTOM GROW

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Water Arum
Swamp Rose Mallow (Hibiscus)

Water Arum is a native perennial wetland plant known for its showy white oval sheaths (spathe) that surround a yellow-green, cylindrical flower spike (spadix). It has large, oblong, heart-shaped leaves on stems that rise above the water from shallow, spreading rhizomes. The blossoms are followed in late summer by tiny, pear-shaped fruits that ripen to bright red, adding ornamental interest to wet habitats.

Water Arum provides food for birds and small mammals that eat its berries, and its flowers attract pollinators. It can tolerate cold climates and forms colonies in shallow water and saturated soils. It is well-suited for ecological restoration, riparian planting, naturalisation, and habitat projects in wet and shaded environments.

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.

Water Arum Quick Facts

Swamp Rose Mallow (Hibiscus) Quick Facts

Zone: 1b
Zone: 5a
Height: 0.2 m (0.8 ft)
Height: 1.5 m (5 ft)
Spread: 0.2 m (0.8 ft)
Spread: 0.9 m (3 ft)
Light: shade, partial shade
Light: full sun
Moisture: wet
Moisture: normal, wet
Growth rate: medium
Growth rate: fast
Life span: short
Life span: short
Growth form: colony-forming
Spreading: rhizomes - medium, seeds - low
Suckering: low

Toxicity: toxic if ingested

Flowers: white sheath around and yellow spike
Flowers: pink-red
Bloom time: spring to summer
Berries: red, in clusters
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, PE
Native to: ON
Other Names: bog arum, swamp lily, wild calla, wild dragon
Other Names: crimson-eyed rose-mallow, dinner plate hibiscus, eastern rosemallow, hardy hibiscus, marsh mallow, marshmallow hibiscus, sea hollyhock, swamp mallow, swamp rose hibiscus