photo of Rhododendron viscosum

Rhododendron viscosum

Swamp Azalea

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Swamp Azalea’s fragrant clusters of white to pale-pink flowers with extended stamens bloom mid-May-July. The flowers have a clove-like...

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Description:

Swamp Azalea’s fragrant clusters of white to pale-pink flowers with extended stamens bloom mid-May-July. The flowers have a clove-like scent, and the nectar is attractive to bumblebees. Swamp Azalea leafs-out before blooming. Its native New Jersey habitat includes swamps and bogs, so it prefers a moist substrate in a partly shady area in your yard. Swamp Azalea is flood-tolerant, but is intolerant of juglones (chemical in the roots of Black Walnut). Use Swamp Azalea in rain gardens, woodland gardens, shade gardens, and massed in shrub borders. As with many Azaleas and Rhododendrons, all parts of this plant are poisonous.

Plant Details:

Plant Type: Shrub

New Jersey Native: Yes

Bloom Times: Late Spring to Early Summer, Summer

Bloom Colors: Pink, White

Deer Resistance: None

Attracts Pollinators and Wildlife: Bees and Other Pollinators, Butterflies

Salt Tolerance: Low to None

Hardiness Zone: 6a, 6b, 7a, 7b

Physiographic Region: All Regions in NJ

Grows in Special Ecoregions: Barrier Island/Coastal, Pinelands

Soil Characteristics

Soil Type: Organic, Sandy

Soil Moisture: Dry, Moist

Soil pH: Acidic, Slightly Acidic

Light Needs of Plant

Optimal Light: Partial Shade

Light Range: Partial Shade, Shade

Water Needs of Plant

Soil Moisture: Dry, Moist

Drought Tolerance: Medium

Size and Growth Rate

Height: 1 - 8 ft

Spread: 3 - 8 ft

Growth Rate: Slow