HOME & GARDEN
Add native rose mallow to your Ohio garden
Columbus Dispatch
July 11, 2026, 6:00 a.m. ET
- The common rose mallow, or hardy hibiscus, is a perennial shrub native to Ohio.
- Its large, five-petaled blooms attract pollinators like hummingbirds and specialized bees.
- This plant thrives in moist to wet soil, making it ideal for rain gardens or near ponds.
Editor’s note: Once a month, OSU Extension Master Gardener Volunteers in FranklinCounty profile a plant that occurs naturally in central Ohio
Ohio gardeners who vacation in warmer climates may sigh wistfully at the blooms of the tropical hibiscus genus, but there are species of this striking shrubby perennial native to the Buckeye State
Common rose mallow (Hibiscus moscheutos), also known as swamp rose mallow or hardy hibiscus, grows between 3 and 8 feet tall and between 2 and 5 feet wide. Multiple hairy stems grow from the plant’s single woody crown; pinching the growing tips will promote a bushier plant. Its gray-green foliage is large and heart-shaped, with a toothed edge
But rose mallow’s most eye-catching feature is its five-petaled blooms, which may be creamy white to pink to burgundy, with a crimson accent at the base of the petals. These blooms may surpass 6 inches in diameter, ranking them among the largest flowers in North American native species and notably larger than the non-native Rose of Sharon (Hibiscus syriacus)
Although individual blooms last only a day or two, a thriving hibiscus will open new flowers each day from July to September, with 20 to 30 opening flowers each day at their peak. Like its tropical relatives, common rose mallow’s flowers have little to no scent
These blooms attract hummingbirds and other pollinators, and the plant is a host to 28 species of butterflies and moths. Rose mallow also has a special relationship with the ground-nesting hibiscus turret bee (Ptilothrix bombiformis). Easily mistaken for a bumblebee, this species feeds its young exclusively on pollen from hibiscus species
Flowers appear on new growth each year, so gardeners may cut the stems to the ground in the fall. Keep in mind, though, that leaving 12 to 24 inches of the plant’s hollow stems provides an excellent overwintering home for other bee species
As the fruit of common rose mallow matures, it will turn from green to a deep brown and split into five segments to release capsules of seeds. Gardeners will have the most success by scarifying the seeds, then putting them through 60 days of cold moist stratification before planting
Plants also may be propagated from cuttings. Dividing or transplanting should be confined to spring, and care should be taken with the new shoots
Common rose mallow’s native habitat includes wetlands and the edges of creeks, so it prefers moist to wet soil. This makes it a good choice for rain gardens or as a focal point alongside a stream or pond
Growing requirements
Hardiness zones: USDA Zones 5-9
Sun: full sun to partial shade
Soil: prefers loam or sandy, slightly acidic soils (pH less than 6.8)
Propagation: easily grown from seed; tip cuttings taken in early July root readily
Pests and disease:Japanese beetles and sawfly larvae can damage foliage. Some susceptibility to leaf spots, blights, rust and canker. Sometimes damaged by deer
