Rose Mallow.

At a glance

Care level

Easy

Plant type

Perennial flowering shrub

Light

Full sun

Indoor light

direct

Water

Every 3 to 7 days

Mature size

4-7 ft tall and 2-5 ft wide

Growth rate

fast

Hardiness

USDA 5 to 9

Bloom time

Mid summer to fall

Care

Ensure this plant gets plenty of sun and consistent moisture; it dislikes drying out. Deadhead spent blooms to encourage more flowering and prune back dead stems in late winter or early spring. Watch for aphids and Japanese beetles, but it's generally quite resilient.

Watering

Keep soil consistently moist, especially during hot weather; do not let it dry out completely.

Feeding

Feed with a balanced fertilizer monthly during the growing season, starting in spring.

Pruning

Cut back dead stems to about 6 inches from the ground in late winter or early spring before new growth begins.

Repotting

Repot container-grown plants every 1-2 years in spring or when root-bound.

Soil

Moist, well-drained loamy soil

Soil pH

Slightly acidic to neutral (6.0-7.0)

Temperature

-23.3 to 32.2°C

Humidity

40 to 60%

Safety

People

This plant is generally not considered toxic to humans.

Pets

This plant is not considered toxic to cats and dogs.

Children

This plant has no specific safety concerns for children beyond normal caution with plants.

Contact allergens

No significant contact allergens are typically associated with this plant.

Airborne allergens

Pollen may cause mild respiratory irritation in sensitive individuals.

Edibility

While some parts of hibiscus can be consumed, it's best to stick to ornamental uses unless you are an expert in wild edibles.

How to identify it

• Huge, dinner-plate sized flowers
• Heart-shaped, lobed leaves
• Upright, bushy habit
• Sturdy, woody stems
• Distinctive central stamen column
• Often dark green or purplish leaves

Height

1.22 to 2.13m

Spread

0.61 to 1.52m

Leaves

Green, Dark green, Purple, deciduous

Flowers

Pink, Red, White, Fuchsia, 15 to 30cm

Common problems

• Japanese beetles — These beetles can skeletonize the leaves of hibiscus, often appearing in large numbers.
• Aphids — Small, pear-shaped insects that feed on plant sap, causing distorted growth and yellowing leaves.
• Spider mites — Tiny pests that thrive in hot, dry conditions and cause stippling on leaves, often with fine webbing.
• Cankers — Fungal infections that cause sunken, discolored areas on stems, which can girdle and kill branches.
• Leaf spot — Various fungal or bacterial infections that cause spots on the foliage, leading to premature leaf drop.
• Poor blooming — Can be caused by insufficient sunlight, over-fertilization, or improper pruning.

Growing it

Propagation

Seed, Cuttings, Division

When to plant

Spring, Fall

Plant it where it has space to grow and access to consistent moisture for the best flowering display.

Grows well with

• Joe Pye Weed — These tall perennials enjoy similar moist conditions and bloom at a similar time, creating a beautiful layered effect.
• Switchgrass — This native grass provides structural contrast and thrives in moist to wet soils, complementing the hibiscus.
• Blue Flag Iris — Its strappy foliage and blue flowers are a lovely contrast to the hibiscus, and it prefers similar wet environments.
• Cardinal Flower — This vibrant red native flower attracts hummingbirds and thrives in moist to wet conditions, pairing well with hibiscus.

Keep away from

• Mint — Mints are highly aggressive spreaders that can easily overwhelm and outcompete hibiscus in garden beds.
• Japanese Knotweed — This invasive plant is a vigorous grower that can shade out and crowd out hibiscus, especially in moist areas.

Similar species

• Swamp Rose Mallow — This species has deeply divided leaves and brilliant scarlet flowers, preferring very wet conditions.
• Rose Mallow — Often found in similar wetland habitats, it features slightly smaller flowers and a very hairy calyx.
• Dinner Plate Hibiscus — This is a cultivated hybrid that is often confused with wild species, known for its exceptionally large, dinner-plate-sized flowers.

Science

Family

Malvaceae

Genus

Hibiscus

Order

Malvales

Class

Magnoliopsida

Native range

Eastern and Central United States

Conservation

This species is not currently of conservation concern.

It typically grows in wet meadows, swamps, and along stream banks, where it can tolerate occasional flooding.

Value to wildlife

nectar source, larval host plant

Pollinators

bees, butterflies, moths

Uses

ornamental

Taxonomy resolved against GBIF.

Questions people ask

How tall does Hibiscus moscheutos get?

It can reach heights of 3 to 7 feet.

When does Hibiscus moscheutos bloom?

It typically blooms from mid-summer through fall.

Does Hibiscus moscheutos come back every year?

Yes, it is a perennial and will regrow from its roots each spring.

What kind of soil does it need?

It thrives in moist to wet, well-drained soils.

Is it a good plant for attracting wildlife?

Absolutely! Its large flowers are highly attractive to bees, butterflies, and moths.

Where the name comes from

The genus name 'Hibiscus' comes from the Greek word 'hibiskos,' which referred to the mallow plant. 'Moscheutos' is thought to be derived from an ancient Greek name for a type of mallow.

Good to know

• Also known as Rose Mallow.
• It's a native perennial that dies back to the ground in winter.
• Its flowers are a magnet for pollinators.
• It prefers moist to wet conditions.
• This hibiscus can grow quite large, sometimes reaching 7 feet tall.