Rhododendron viscosum 'Pink Mist'
Overview
Uses: Woodland edges, damp and low-lying beds, rain gardens, shrub borders in partial shade, pollinator and habitat plantings.
Benefits: Intensely clove-scented flowers that open in early summer, weeks after every other azalea has finished, blue-green summer foliage that turns orange and red in autumn, and a genuine tolerance for ground that stays wet.
USDA Hardiness Zones: 4–9
Sun: Full Sun, Partial Sun/Shade
Life Cycle: Deciduous Shrub
Growth Habit: Upright, Spreading — open branching from a slowly suckering base.
Bloom Color: Pink to White
Foliage Color: Blue-Green, maturing to Orange and Red in fall
Mature Height: 4–6 feet
Mature Width: 4–6 feet
Bloom Season: Early to midsummer
Growth Rate: Slow to Moderate
Summary
An azalea that blooms in June, smells like cloves, and grows happily in the wet corner of the yard.
Swamp azalea is the late one. While the evergreen azaleas are putting on their show in April and May, this native is still building foliage. It waits until early summer, when the azalea season is long over and nobody is expecting it, then opens narrow tubular flowers in soft pink fading toward white. The fragrance is the point — sweet and distinctly spicy, strong enough to find the plant from across the garden on a warm evening.
'Pink Mist' holds more color than the typical wild form, keeping a clear blush through the flower rather than washing out to cream. The stamens extend well past the petals, giving each cluster a light, airy look that reads as a haze at any distance.
The foliage is worth its own mention: a distinctly blue-green cast through summer that sets it apart from surrounding greens, then a shift to orange and red in fall. Because the plant is deciduous, that display is the closing act rather than a footnote.
Its native habitat is the edge of swamps and low woods, which explains its tolerance for damp ground. It is one of the few flowering shrubs you can put in a wet, partly shaded spot with confidence — and one of the more valuable early-summer nectar sources for butterflies and native bees.
Care
Swamp Azalea 'Pink Mist' Care
Plant in full sun to partial shade. Partial shade generally suits it better in the warmer end of its range; more sun produces heavier bloom where summers are cooler.
Soil must be acidic, organic, and moisture-retentive. Swamp azalea grows naturally in boggy ground and handles periodic saturation without trouble, but it will decline quickly in alkaline soil or in hot, dry, exposed sites. Amend with peat or composted bark at planting and mulch with pine fines or shredded leaves.
Keep the root zone consistently moist. Roots are fine and shallow, so the plant shows drought stress fast — wilting and leaf scorch are the early signals. Mulch is not optional here.
Fertilize lightly in early spring with an acid-forming slow release fertilizer. Avoid lime and avoid anything heavy; the fine root system burns easily.
Prune immediately after flowering if needed. Next year's buds form on old wood later in the season, so a late-season or spring cutback removes bloom. In most cases the plant needs only the removal of dead or crossing stems.
Size
What Size is the Swamp Azalea 'Pink Mist' for Sale Online?
Our Swamp Azalea 'Pink Mist' ships in a greenhouse-grade grow pot and is appropriately sized for its container at the time of shipment. If you have specific sizing or planting questions, please contact us.
How Large Does Swamp Azalea 'Pink Mist' Grow?
Expect roughly 4 to 6 feet tall and 4 to 6 feet wide at maturity, occasionally taller in ideal damp conditions. Growth is slow to moderate, so plan on several seasons to fill in. Space 4 to 5 feet apart for a connected planting.
Additional Information
What are some common names for this plant?
The most widely used names for this plant are:
- Swamp Azalea
- Clammy Azalea
- Swamp Honeysuckle
All three refer to Rhododendron viscosum. "Clammy" describes the sticky glandular hairs on the flower tube.
Why does it bloom so much later than other azaleas?
It is a different species with a different schedule. Evergreen azaleas bloom on buds set the previous summer and open in April and May; swamp azalea flowers after it has leafed out, typically in June or early July. That timing is its main advantage — it extends the azalea season by a full month rather than competing with it. Related selections are in our Azaleas collection.
Can it really grow in wet soil?
Yes. Its natural habitat is swamp margins, stream banks, and low wet woods, and it tolerates periodically saturated ground better than nearly any other azalea. The one hard requirement is acidity — wet alkaline soil will not work.
Is it native?
Rhododendron viscosum is native to the eastern United States, and 'Pink Mist' is a selected form of that species chosen for stronger flower color. You can browse other native selections in our Native Plants of North America collection.
Will deer eat it?
Deciduous azaleas are browsed more readily than most evergreen shrubs, and new growth is the most vulnerable. In areas with real deer pressure, protect young plants for the first several seasons. Our deer-resistant shrubs and evergreens are a more dependable starting point where browse is constant.
