Also known as Common Rose-Mallow · Crimson-Eyed Rose Mallow · Crimson-Eyed Rose-Mallow
Swamp rose mallow (Hibiscus moscheutos) is a spectacular flowering shrub native to North America, producing large, showy blossoms.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun
75% intensity
Prefers at least 6-8 hours of direct sunlight daily for best flowering.
Consistent Moisture
75% intensity
Keep soil consistently moist, tolerates brief periods of standing water.
Clay, Loam, Sandy, Acidic, Neutral, Alkaline
50% intensity
Warm to Moderate
50% intensity
Thrives in temperatures between 20-30°C. Protect from prolonged frost.
Moderate
50% intensity
Feed with balanced fertilizer in spring and mid-summer; avoid over-fertilizing.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
None
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Swamp rose mallow thrives in consistently moist soil. Water deeply when the top 2-3 cm of soil feels dry. Avoid waterlogging, especially in containers, but do not let the plant dry out.
It tolerates standing water briefly, reflecting its native wetland habitat.
Prune back dead or damaged stems in early spring before new growth emerges. To encourage bushier growth and more flowers, you can pinch back the tips of young stems in early summer.
Deadheading spent flowers can also prolong the blooming period.
Swamp rose mallow can be propagated from seed, sown indoors in late winter or directly outdoors in spring after the last frost. Division of established clumps in early spring is also effective.
Softwood cuttings taken in early summer and rooted in moist medium will also succeed.
Container-grown swamp rose mallow typically requires repotting every 2-3 years. Repot in early spring before new growth begins. Choose a pot that is only slightly larger than the current one to avoid overwatering issues.
Refresh the potting mix with good quality, moisture-retentive compost.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Swamp Rose Mallow (Hibiscus moscheutos)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Malvales |
| Family | Malvaceae |
| Genus | Hibiscus |
| Species | Hibiscus moscheutos |
Similar in genus Hibiscus
Answers based on plant encyclopedia data
