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Mountain Sweet Pepperbush

Clethra acuminata

Last reviewed: October 2026

Mountain Sweet Pepperbush (Clethra acuminata)
Photo: no rights reserved

Toxicity unknown

Mountain Sweet Pepperbush (Clethra acuminata) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

part shade

Water

medium

Size

72"–240" H × 48"–120" W

Bloom

Jul, Aug

Native to

AL, GA, KY, NC and 5 more states

Pollinators

bees, butterflies, moths

Before you buy

Your city may pay you to plant this

Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 459 programs across 44 states, each with a link to the provider and the date we last checked it.

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Browse plants for this ecoregion

PiedmontBlue Ridge

Mountain sweet pepperbush is a large native shrub that produces fragrant white flower spikes in mid to late summer. It thrives in partial shade with moderate moisture and provides excellent seasonal interest with its aromatic blooms and attractive fall foliage.

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In an HOA neighborhood

Mountain Sweet Pepperbush is an HOA-friendly choice. Maintenance level: low. Tidiness: 3 out of 5.

Works well in: mid zone, foundation.

  • Large mature size may overwhelm smaller landscapes
  • Can appear sparse in winter without leaves

Wildlife value

The fragrant summer flowers attract bees, butterflies, and moths, making it valuable for pollinators during the peak growing season.

Common questions

How much sun does Mountain Sweet Pepperbush need?
Mountain Sweet Pepperbush grows best in part shade conditions.
When does Mountain Sweet Pepperbush bloom?
Mountain Sweet Pepperbush blooms in July and August.
Where is Mountain Sweet Pepperbush native?
Mountain Sweet Pepperbush (Clethra acuminata) is native to AL, GA, KY, NC and 5 more states, per the World Checklist of Vascular Plants (Kew).
What pollinators does Mountain Sweet Pepperbush attract?
Mountain Sweet Pepperbush draws bees, butterflies, and moths.
Is Mountain Sweet Pepperbush HOA-friendly?
Mountain Sweet Pepperbush is generally an HOA-friendly choice in the right placement, with low maintenance.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

See all plant problem guides

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