







Summersweet
About Summersweet
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 and Coastal sweetpepperbush

How to care for Summersweet

How often to water your Summersweet

every 9
Summersweet 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.
Water 0.5 cups every
9

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

a window
Summersweet love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Summersweet does not tolerate low-light 🚫.
Select your region to see how the current weather in your area affects the placement of Summersweet in your home 🏡.

How to fertilize Summersweet

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 Summersweet after it doubles in size or once a year—whichever comes first.

Summersweet is generally considered an easy-to-care-for plant and makes a great choice for beginners!
Water Needs
Summersweet prefers for the soil to dry out between waterings and should be watered regularly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Sunlight Needs
Summersweet requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.
Toxicity
Greg does not have confirmed data on this plant’s toxicity. If you, a family member, or a pet consumes plant material of unknown toxicity, it’s always best to consult a medical professional.
If you or someone else ingested this plant, call Poison Control at US (800) 222-1222. If a pet consumed this plant, contact your veterinarian or the ASPCA at US (888) 426-4435.
Soil
Summersweet does best in well-draining soil. A good soil will contain lots of organic matter such as coco coir as well as perlite or vermiculite to help with drainage. Adding a handful of perlite to regular store-bought potting soil should do the trick!
Fertilizer
Summersweet should be repotted after it doubles in size or once a year, whichever comes first. Fresh potting soil has all the nutrients your plant needs, so as long as it’s refreshed yearly, you shouldn’t need to use fertilizer. Remember, plants get their energy from sunlight, not fertilizer!
Growth Pattern
Summersweet grows vertically and new growth will emerge from the top of the plant.
Growing Outdoors
USDA Hardiness Zone
Summersweet can be grown outdoors in USDA Hardiness Zones 3a-9b. Find your local hardiness zone here.
Propagation
Summersweet can be propagated by division into new individual plants.
- Check to see if there is more than one plant. In some cases they may still be beneath the soil surface. If you feel confident, you may remove the soil to check for baby plantlets below!
- If there are multiple plants growing, unpot the plant and gently tug the plants apart, being careful not to disturb too many of the roots. They may be connected by large root segments which you may need to break to free the plantlet.
- Pot up the new plant in well-draining soil
- Repot the parent plant back into its original pot
Care Summary for Summersweet
Summersweet
Greg recommends:

0.5 cups every 9 days

< 1ft from a window

Repot after 2x growth
Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.
