Swamp Rose Mallow, is a native perennial in the Malvaceae (mallow) family. It is known for its large, showy flowers, which range from white to pink with deep red centers. Blooming from mid-summer to early fall, its tropical-like appearance makes it a standout in wetlands, rain gardens, and moist meadows. This plant thrives in wet conditions and supports a variety of pollinators and other wildlife.
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Growth Habits & Characteristics:
•Height: 4–7 feet
•Spread: 2–4 feet
•Sun Requirements: Full sun to partial shade
•Soil Preferences: Moist to wet soils, including clay, loam, and sandy soils
•Lifespan: Perennial
•Bloom Time: Mid-summer to early fall (July–September)
•Water Needs: High; thrives in wet conditions but can tolerate brief droughts
•Growth Habit: Upright, bushy with woody stems and large, heart-shaped or lobed leaves
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Pollinator Importance:
•Host plant for the Rose Mallow Bee (Ptilothrix bombiformis), a specialist pollinator.
•Attracts hummingbirds, native bees, and butterflies.
•Nectar source for bumblebees, carpenter bees, and other long-tongued pollinators.
•Leaves may be used by caterpillars of some moth species.
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Companion Plants:
•Asclepias incarnata (Swamp Milkweed) – Thrives in similar wetland conditions and supports monarch butterflies.
•Lobelia cardinalis (Cardinal Flower) – Adds a striking red contrast and attracts hummingbirds.
•Eutrochium maculatum (Spotted Joe-Pye Weed) – Provides nectar for late-season pollinators.
•Carex spp. (Native Sedges) – Helps retain soil moisture and adds texture.
•Iris virginica (Blue Flag Iris) – Complements Hibiscus moscheutos with beautiful blue blooms.
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Ecological Importance:
•Specialist Pollinator Support: Essential for the Rose Mallow Bee, which relies on its pollen.
•Pollinator Magnet: Provides nectar for a diverse range of bees, butterflies, and hummingbirds.
•Water Filtration: Helps filter runoff and improve water quality in wetland ecosystems.
•Erosion Control: Deep roots stabilize soil along shorelines and in wet meadows.
•Biodiversity Enhancer: Supports wetland ecosystems by providing habitat and food for insects and small wildlife.