Swamp Rose Mallow (Hibiscus) vs Yellow Hedysarum - TreeTime.ca

Swamp Rose Mallow (Hibiscus) vs Yellow Hedysarum

Hibiscus moscheutos

Hedysarum sulphurescens

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Swamp Rose Mallow (Hibiscus)
Yellow Hedysarum

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.

Yellow Hedysarum is a native perennial wildflower recognized for its clusters of pale yellow to creamy-white, pea-like blooms. Flowering from late spring into summer, it adds subtle colour to grasslands, roadsides, and open woods while attracting a variety of pollinators, especially bumblebees.

As a nitrogen-fixing plant, Yellow Hedysarum enriches soils and supports the growth of surrounding vegetation. Its deep taproot and extensive root system make it drought-tolerant and effective at stabilizing soil. Grizzly bears are known to dig up and eat the nutritious taproot. Its resilience and ecological value make it well-suited for restoration, naturalization, pollinator gardens, and erosion control projects.

Swamp Rose Mallow (Hibiscus) Quick Facts

Yellow Hedysarum Quick Facts

Zone: 5a
Zone: 2b
Height: 1.5 m (5 ft)
Height: 0.5 m (1.5 ft)
Spread: 0.9 m (3 ft)
Spread: 0.2 m (0.8 ft)
Light: full sun
Light: partial shade, full sun
Moisture: normal, wet
Moisture: dry, normal
Growth rate: fast
Growth rate: fast
Life span: short
Life span: short
Growth form: ascending to upright
Spreading: seeds - low
Suckering: low


Flowers: pink-red
Flowers: creamy yellow, in dense spikes
Bloom time: late spring to summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: ON
Native to: AB, BC
Other Names: crimson-eyed rose-mallow, dinner plate hibiscus, eastern rosemallow, hardy hibiscus, marsh mallow, marshmallow hibiscus, sea hollyhock, swamp mallow, swamp rose hibiscus
Other Names: sulphur hedysarum, sulphur sweet-vetch, yellow sweet-vetch