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Toxicity flag: high

Keep this plant away from pets and children who chew on landscape plants.

a short afternoon hike into Trophy Meadows in Wells Gray Park near Clearwater...flowering White Rhododendron (Rhododendron albiflorum)...

Photo: Murray Foubister (CC BY-SA 2.0), via Wikimedia Commons

high water

Cascade Azalea

Rhododendron albiflorum

Cascade Azalea (Rhododendron albiflorum) is a landscape plant valued for its form and structure as much as its bloom. It reaches roughly 6 ft at maturity and blooms in late summer. Match it to full sun to part shade and keep the root zone consistently moist. One caveat worth knowing before you plant: parts of this species carry a toxicity flag (high), so keep it away from pets and kids who chew on landscape plants. Given a spot that matches its light and water needs, it is a dependable, low-drama addition to the yard.

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Hardiness range

A hardiness zone is not on file for this plant yet, and a ZIP-level fit check is not available for it.

How it does in your yard

HabitNot recorded
Hardiness zoneNot recorded
Mature heightAbout 6 ft
Waterhigh
Bloom periodLate Summer
Native to the USNot recorded
Toxicityhigh

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Questions

Is Cascade Azalea native to the United States?

USDA PLANTS data does not record Cascade Azalea as native to the United States.

What USDA hardiness zone does Cascade Azalea need?

A minimum hardiness zone is not on file for Cascade Azalea yet.