Swamp Rose Mallow (Hibiscus) vs Early Blue Violet - TreeTime.ca

Swamp Rose Mallow (Hibiscus) vs Early Blue Violet

Viola adunca

Hibiscus moscheutos

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Early Blue Violet
Swamp Rose Mallow (Hibiscus)

Early Blue Violet is a low-growing native perennial wildflower valued for its striking early-spring blooms. The flowers range in color from vibrant blue to deep violet, often marked with pale highlights and fine white hairs. They provide an important early nectar source for pollinators and serve as a host plant for several fritillary butterfly species.

It spreads by both seed and rhizomes, gradually forming small colonies. Its dark green, heart-shaped leaves add ornamental appeal, and the plant shows some resistance to deer browsing. Early Blue Violet is well-suited to naturalization projects and pollinator-friendly gardens, and has also been used in coastal butterfly habitat restoration in the Pacific Northwest.

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.

Early Blue Violet Quick Facts

Swamp Rose Mallow (Hibiscus) Quick Facts

Zone: 2a
Zone: 5a
Height: 0.1 m (0.3 ft)
Height: 1.5 m (5 ft)
Spread: 0.2 m (0.5 ft)
Spread: 0.9 m (3 ft)
Light: partial shade, full sun
Light: full sun
Moisture: dry, normal
Moisture: normal, wet
Growth rate: fast
Growth rate: fast
Life span: short
Life span: short
Growth form: low growing, clump-forming
Spreading: seeds - medium, rhizomes - medium
Suckering: low
Maintenance: medium

Toxicity: rhizomes, fruit, seed poisonous to humans

Flowers: purple to blue-violet
Flowers: pink-red
Bloom time: mid spring to early summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, QC, NS, NB, YT, NT
Native to: ON
Other Names: dog violet, hookedspur violet, sand violet, western blue violet
Other Names: crimson-eyed rose-mallow, dinner plate hibiscus, eastern rosemallow, hardy hibiscus, marsh mallow, marshmallow hibiscus, sea hollyhock, swamp mallow, swamp rose hibiscus