Swamp Rose Mallow (Hibiscus) vs Black-Eyed Susan - TreeTime.ca

Swamp Rose Mallow (Hibiscus) vs Black-Eyed Susan

Hibiscus moscheutos

Rudbeckia hirta

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Swamp Rose Mallow (Hibiscus)
Black-Eyed Susan

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.

Black-Eyed Susan is a striking native wildflower known for its bright yellow, daisy-like flowers with dark center disks. With deadheading, the plant can bloom for an extended period, from mid-summer to early fall. These cheerful flowers attract a variety of pollinators, including bees and butterflies. Adding to its ecological value, the plant also acts as a host for the Wavy-Lined Emerald Moth (Synchlora aerata) and the Silvery Checkerspot (Chlosyne nycteis) butterfly.

While it is typically a short-lived perennial or biennial, the plant freely self-seeds. This allows it to persist in the landscape, particularly in natural areas where it can spread and establish itself. This plant is drought-tolerant, salt-tolerant, and deer and rabbit-resistant, making it ideal for challenging environments. The Black-Eyed Susan is well suited to wildflower gardens, pollinator gardens, as well as slopes, banks, and naturalized areas

As a perennial, it dies back to the crown each winter, it will regrow from the base in the spring. Avoid disturbing the crown during late winter to ensure healthy growth the following season.

Swamp Rose Mallow (Hibiscus) Quick Facts

Black-Eyed Susan Quick Facts

Zone: 5a
Zone: 3a
Height: 1.5 m (5 ft)
Height: 0.8 m (2.5 ft)
Spread: 0.9 m (3 ft)
Spread: 0.5 m (1.5 ft)
Moisture: normal, wet
Moisture: dry, normal
Light: full sun
Light: full sun
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no
Flowers: pink-red
Flowers: bright yellow; daisy-like
Growth rate: fast
Growth rate: very fast
Life span: short
Life span: short
Maintenance: medium
Suckering: low
Suckering: none




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: hairy coneflower