Catawba Rhododendron

Rhododendron catawbiense, Ericaceae

Zones

4–8

Layer

Shrub

Lifespan

Perennial

Growth

Slow

Guild Roles

Pollinator Attractor

Growing Conditions

Sun

Partial Shade (optimal)Full Shade (tolerated)

Water

Moderate

Soil pH

4.5 – 6

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Highbush BlueberryVaccinium corymbosum

Nurse Plant

Downy ServiceberryAmelanchier arborea

Wind ProtectionShade Provision

Mountain Sweet PepperbushClethra acuminata

Nutrient AccumulationWind Protection

American BasswoodTilia americana

Pollinator SharingShade Provision

Antagonistic Plants

Flame AzaleaRhododendron calendulaceum

Both rhododendrons release growth-inhibiting chemicals and compete for acidic soil resources

European BilberryVaccinium myrtillus

Rhododendron allelopathic compounds can inhibit Vaccinium growth in acidic soils

Carolina AllspiceCalycanthus floridus

Both produce secondary metabolites and compete for similar woodland understory conditions

Evergreen AzaleaRhododendron indicum

Rhododendrons produce allelopathic compounds and have shallow competing root systems

Uses

Functions

Ornamental

Common Questions

What zones does Catawba Rhododendron grow in?

Catawba Rhododendron grows in USDA hardiness zones 4 through 8.

What are good companion plants for Catawba Rhododendron?

Good companions for Catawba Rhododendron include Highbush Blueberry, Downy Serviceberry, Mountain Sweet Pepperbush, American Basswood.

Design guilds with Catawba Rhododendron and see companion relationships visually.

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