Swamp Rose-Mallow, Pink Swamp Hibiscus, Large-flowered Hibiscus, Velvet Hardy Mallow, Hibiscus grandiflora
Noted for its huge flowers, Hibiscus grandiflorus (Swamp Rose Mallow) is a showy herbaceous, shrub-like, perennial boasting very large hollyhock-like flowers, up to 6-10 in. across (15-25 cm), with 5 overlapping petals in white or pink, and a sharply contrasting reddish-purple throat surrounded by yellow stamens. Blooming from the axils of the leaves in early spring to late summer (depending on geographic location), the blossoms open by day and close at night. They last about 1-2 days, but new flowers open each day in rapid succession throughout the bloom season. The showy flowers attract hummingbirds and butterflies. But even without these gorgeous blooms, this plant is worth growing for the handsome foliage of alternate, velvety, heart-shaped, gray-green leaves, 10 in. long (25 cm). Endemic to the swamps, marshes and ditches, of the southeast U.S., Swamp Rose-Mallow is excellent for wetland gardens, bogs or pond areas.
| Hardiness |
8 - 11 |
|---|---|
| Plant Type | Perennials |
| Plant Family | Malvaceae |
| Genus | Hibiscus |
| Common names | Hibiscus |
| Exposure | Full Sun, Partial Sun |
| Season of Interest |
Spring (Early, Mid, Late) Summer (Early, Mid, Late) |
| Height |
6' - 15' (180cm - 4.6m) |
| Spread |
2' - 4' (60cm - 120cm) |
| Spacing |
36" - 48" (90cm - 120cm) |
| Maintenance | Low |
| Water Needs | Average, High |
| Soil Type | Loam, Sand |
| Soil pH | Acid, Neutral |
| Soil Drainage | Moist but Well-Drained, Moisture Retentive, Poorly Drained |
| Characteristics | Showy |
| Native Plants | United States, Southwest, Southeast, Mississippi, Alabama, Louisiana, Florida, Georgia, Texas |
| Tolerance | Wet Soil |
| Attracts | Butterflies, Hummingbirds |
| Garden Uses | Bog Gardens, Patio And Containers, Ponds And Streams |
| Garden Styles | Prairie and Meadow, Informal and Cottage |
| Hardiness |
8 - 11 |
|---|---|
| Plant Type | Perennials |
| Plant Family | Malvaceae |
| Genus | Hibiscus |
| Common names | Hibiscus |
| Exposure | Full Sun, Partial Sun |
| Season of Interest |
Spring (Early, Mid, Late) Summer (Early, Mid, Late) |
| Height |
6' - 15' (180cm - 4.6m) |
| Spread |
2' - 4' (60cm - 120cm) |
| Spacing |
36" - 48" (90cm - 120cm) |
| Maintenance | Low |
| Water Needs | Average, High |
| Soil Type | Loam, Sand |
| Soil pH | Acid, Neutral |
| Soil Drainage | Moist but Well-Drained, Moisture Retentive, Poorly Drained |
| Characteristics | Showy |
| Native Plants | United States, Southwest, Southeast, Mississippi, Alabama, Louisiana, Florida, Georgia, Texas |
| Tolerance | Wet Soil |
| Attracts | Butterflies, Hummingbirds |
| Garden Uses | Bog Gardens, Patio And Containers, Ponds And Streams |
| Garden Styles | Prairie and Meadow, Informal and Cottage |
How many Hibiscus grandiflorus (Swamp Rose Mallow) do I need for my garden?
| Plant | Quantity | |
|---|---|---|
| Hibiscus grandiflorus (Swamp Rose Mallow) | N/A | Buy Plants |
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Create a membership account to save your garden designs and to view them on any device.
Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.
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