Shrubs

Hibiscus 'Blue River II'

Blue River II hardy hibiscus

Blue River II hardy hibiscus. Representative plant

Huge, clear white flowers open above deep green leaves that can show a blue tinge. This upright hardy hibiscus is a perennial, not a woody rose of Sharon. It returns slowly in spring, then grows quickly into a substantial summer display.

At a glance

Sun: Full sun
Mature size: 4–5 ft. tall × 2.5–3 ft. wide
Water: Consistent moisture; tolerates wet soil
Hardiness: USDA zones 5–9
Bloom: White without a colored eye; July–September

Sizes & prices

#3Pure White Hardy Hibiscus Zone 5 Deer resistant Blooming Starts before July and continues thru September Md 8'$42.99

Catalog updated September 8, 2026. This is not a live stock count; please call to confirm availability and price.

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Resistance & tolerances

Deer: Usually avoided, but not deer-proof.
Drought: Do not allow soil to dry out.
Wet soil: Tolerant; suitable for moist low spots and rain gardens.

Resistance is not a guarantee; deer and rabbits may browse any plant.

Pollinators & wildlife

Attracts: Butterflies

Seasonal interest

Foliage: Herbaceous perennial; stems die back for winter.

Growing & care

Pruning: Cut dead stems to 3–4 inches in late autumn. New shoots emerge late in spring.

Sources & photo credits

Missouri Botanical Garden

Photo: Photo by David J. Stang · CC BY-SA 4.0

Image notes: Blue River II hardy hibiscus. Representative plant; resized and re-encoded, not cropped.

Reviewed September 21, 2026. Growing conditions vary by location.