Alphabetical Plant Listing

Rhododendron catawbiense (Catawba Rosebay)

Catawba Rosebay, Purple Rhododendron, Red Laurel, Catawba Rhododendron, Mountain Rosebay


Providing a stunning floral show, Rhododendron catawbiense (Catawba Rosebay) is a large, oval-rounded, broadleaf evergreen shrub boasting large rounded clusters of lilac-purple flowers. Blooming in mid spring to early summer, each cluster (or truss), 5-6 in. across (12-15 cm), can hold up to 20 attractive funnel-shaped flowers with delicate yellow to brown throat markings. Rich in nectar, the flowers attract butterflies and hummingbirds. Borne at the tips of stout, ascending branches, the blossoms contrast beautifully with the evergreen foliage of elliptic, glossy, dark green leaves. Excellent for shade gardens, this eastern U.S. native is regarded one of the most durable and adaptable Rhododendrons in cultivation. Long-lived (75–100 years), it is a fine choice as a specimen, in mixed shrub borders, and for massing or naturalizing.

  • Grows up to 6-10 ft. tall (180-300 cm) and 8-12 ft. wide (240-360 cm).
  • A part shade lover, this plant is easily grown in evenly moist, acidic, humusy, well-drained soils. Good soil drainage is critical. Morning sun and afternoon shade is best in hot summers. Protect from high winds. Mulch annually with leaf mould to retain moisture, control weeds, and cool the soil.
  • Keep an eye out for canker, crown rot, root rot, leaf spot, rust, powdery mildew, aphids, borers, lacebugs, leafhoppers, mealybugs, mites, nematodes, scale, thrips and whiteflies. 
  • Deadheading not necessary but can be snipped off carefully after blooming.
  • Pruning should be done immediately after flowering.
  • All parts of plant are poisonous if ingested
  • Native to the southeastern United States.

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Requirements

Hardiness 4 – 8
Heat Zones 1 – 8
Plant Type Shrubs
Plant Family Azaleas - Rhododendrons, Rhododendrons - Azaleas
Exposure Partial Sun
Season of Interest Spring (Mid,Late)
Summer (Early)
Height 6' – 10' (180cm – 3m)
Spread 8' – 12' (240cm – 3.6m)
Spacing 72" – 144" (180cm – 360cm)
Water Needs Average
Maintenance Low
Soil Type Loam, Sand
Soil pH Acid
Soil Drainage Moist but Well-Drained, Moisture Retentive
Characteristics Showy, Evergreen
Native Plants United States, Northeast, Massachusetts, Southeast, Alabama, Georgia, Kentucky, North Carolina, South Carolina, Tennessee, Virginia, West Virginia
Attracts Butterflies, Hummingbirds
Garden Uses Beds and Borders
Garden Styles Informal and Cottage, Prairie and Meadow

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Great Plant Combination Ideas with Azaleas - Rhododendrons

Guides with Azaleas - Rhododendrons

Great Plant Combination Ideas with Rhododendrons - Azaleas

Guides with Rhododendrons - Azaleas


Anthony Heflin, olga V. (Shutterstock)

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 4 – 8
Heat Zones 1 – 8
Plant Type Shrubs
Plant Family Azaleas - Rhododendrons, Rhododendrons - Azaleas
Exposure Partial Sun
Season of Interest Spring (Mid,Late)
Summer (Early)
Height 6' – 10' (180cm – 3m)
Spread 8' – 12' (240cm – 3.6m)
Spacing 72" – 144" (180cm – 360cm)
Water Needs Average
Maintenance Low
Soil Type Loam, Sand
Soil pH Acid
Soil Drainage Moist but Well-Drained, Moisture Retentive
Characteristics Showy, Evergreen
Native Plants United States, Northeast, Massachusetts, Southeast, Alabama, Georgia, Kentucky, North Carolina, South Carolina, Tennessee, Virginia, West Virginia
Attracts Butterflies, Hummingbirds
Garden Uses Beds and Borders
Garden Styles Informal and Cottage, Prairie and Meadow

Great Plant Combination Ideas with Azaleas - Rhododendrons

Guides with Azaleas - Rhododendrons

Great Plant Combination Ideas with Rhododendrons - Azaleas

Guides with Rhododendrons - Azaleas

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