Plant Care Clethra Alnifolia

Clethra Alnifolia

About Clethra Alnifolia

Sweet pepperbush is a deciduous shrub that may grow to 5 to 10 feet. It is native to eastern North America from Maine south to Florida and west to Texas. Small, white flowers occur in dense clusters on long 3 to 6 inch terminal spikes mature in late summer. The flowers produce high quality nectar and pollen that supports hummingbirds, butterflies, bees and other pollinators.

Taxonomy

Clethra alnifolia
Clethra
Clethraceae
Ericales

Also known as

Coastal Sweet Pepperbush, Coastal Sweet Pepperbush, Coastal sweetpepperbush and Summersweet

How to care for Clethra Alnifolia

Water

How often to water your Clethra Alnifolia

Water needs for Clethra Alnifolia
0.5 cups
every 9

Clethra Alnifolia needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of Clethra Alnifolia

Water 0.5 cups every
9

Does your plant get direct sunlight?

Select the pot size

5"
Light

Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Coastal Sweet Pepperbush in your home

Light needs and placement for plant Clethra Alnifolia: 1ft from a window
1ft or less from
a window

Clethra Alnifolia love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Clethra Alnifolia does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Clethra Alnifolia in your home 🏡.

Nutrients

How to fertilize Clethra Alnifolia

Nutrient, fertilizer, and repotting needs for Clethra Alnifolia: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Clethra Alnifolia after it doubles in size or once a year—whichever comes first.

FAQs
Difficulty Level

Clethra Alnifolia is generally considered an easy-to-care-for plant and makes a great choice for beginners!


Water Needs
Sunlight Needs
Toxicity
Soil
Fertilizer
Growth Pattern
Growing Outdoors
Propagation

Care Summary for Clethra Alnifolia

Clethra Alnifolia

Clethra Alnifolia


Greg recommends:

Water

0.5 cups every 9 days

Placement

< 1ft from a window

Nutrients

Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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