Sweet Pepperbush

Clethra alnifolia, Clethraceae

Zones

3–9

Layer

Shrub

Lifespan

Perennial

Growth

Moderate

Guild Roles

Pollinator AttractorBeneficial Insect Habitat

Growing Conditions

Sun

Partial Sun (optimal)Partial Shade (acceptable)

Water

ModerateModerateModerate

Soil pH

4.5 – 6.5

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

WinterberryIlex verticillata

Pollinator Sharing

Inkberry HollyIlex glabra

Wind ProtectionPollinator Sharing

Black ChokeberryAronia melanocarpa

Pollinator SharingBeneficial Insect Habitat

European BilberryVaccinium myrtillus

Nutrient AccumulationBeneficial Insect Habitat

Antagonistic Plants

Mountain Sweet PepperbushClethra acuminata

Sweet pepperbush species compete for moist, acidic soil conditions

Marsh FernThelypteris palustris

Marsh fern and sweet pepperbush compete for wet, acidic soil resources

Virginia SweetspireItea virginica

Both shrubs prefer similar moist, acidic conditions and compete for growing space

Uses

Functions

Pollinator SupportOrnamentalWildlife Habitat

Common Questions

What zones does Sweet Pepperbush grow in?

Sweet Pepperbush grows in USDA hardiness zones 3 through 9.

What are good companion plants for Sweet Pepperbush?

Good companions for Sweet Pepperbush include Winterberry, Inkberry Holly, Black Chokeberry, European Bilberry.

Design guilds with Sweet Pepperbush and see companion relationships visually.

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