What to Plant in September at Wyman’s Garden Center

September is one of the best planting months of the year here on the South Shore. In the Hanson area, where most gardens fall around USDA Zones 6b to 7a, cooler daytime temperatures arrive while the soil remains warm. That combination makes September especially favorable for establishing new roots before winter.

At Wyman’s Garden Center, this is also when the garden starts shifting from summer color to the deeper tones and textures of fall. Fresh mums, ornamental kale, perennials, grasses, trees, shrubs, and other seasonal color can all help give tired beds and containers a much-needed September refresh.

Refresh Containers With Fall Color

If your summer containers are beginning to look tired, there is no need to give up on them yet.

Mums are an obvious choice for September, but combining them with ornamental kale, grasses, colorful foliage, and other cool-weather plants creates containers that can stay attractive well into fall.

A simple refresh may be all that is needed. Remove declining summer annuals, keep any plants that still look good, and add a few fresh fall selections to extend the display.

September Is Prime Time for Perennials

Early fall is an excellent time to add perennials to South Shore gardens. The cooler air reduces heat stress, while warm soil encourages root development.

Late-season bloomers and foliage plants are especially valuable now because they add immediate interest while also becoming part of the permanent landscape.

Look for plants such as:

• Sedum
• Rudbeckia
• Asters
• Ornamental grasses
• Heuchera
• Late-blooming pollinator-friendly perennials

These plants can help bridge the gap between summer and fall while providing color and texture year after year.

Plant Trees and Shrubs While the Soil Is Warm

September is also one of the strongest times of year to plant trees and shrubs in southeastern Massachusetts.

Instead of spending energy dealing with summer heat, newly planted trees and shrubs can concentrate on root growth. Those roots continue developing even after top growth begins slowing down.

Hydrangeas, flowering shrubs, evergreens, ornamental trees, and landscape shrubs planted now have an opportunity to establish before winter and can be better prepared for next spring.

The key is watering. Even as temperatures cool, newly planted trees, shrubs, and perennials still need consistent moisture until the ground freezes.

Prepare Now for Spring Color

September is also the beginning of spring-bulb season.

Tulips, daffodils, crocus, alliums, and other spring-flowering bulbs are planted in fall so they receive the cold period they need before blooming.

Planting a few bulbs around existing perennials and shrubs is one of the simplest ways to improve next year’s garden without taking up much space.

Don’t Forget the Lawn

September is not only about garden beds. It is also one of the most important lawn months of the year in Massachusetts.

Cooler temperatures and more dependable moisture create good conditions for seeding, overseeding, repairing thin areas, and improving soil conditions.

If summer heat, weeds, crabgrass, heavy rain, or lawn disease have left damaged areas behind, September is the time to begin repairing them.

Wyman’s carries grass seed, lawn soil products, lime, fertilizers, and other lawn-care materials, and the staff can help determine the right approach for your particular lawn.

Take Advantage of September

September should not be viewed as the end of the gardening season. Around Hanson and the South Shore, it is one of the most productive months for planting.

Refresh tired containers with mums and fall color. Add perennials while the soil is warm. Plant trees and shrubs for stronger root establishment. Repair summer lawn damage. And begin thinking ahead to spring by planting bulbs.

Stop into Wyman’s Garden Center and let the team help you choose the right plants and products for your yard, garden, and growing conditions.

September Planting FAQ

What growing zone is the Hanson area?
Most of the South Shore falls around USDA Zones 6b to 7a, although individual locations can vary slightly.

Is September too late to plant trees and shrubs?
No. September is often an excellent planting period because cooler air reduces stress while the soil remains warm enough for root development.

Should I still water plants after summer ends?
Yes. Fall-planted trees, shrubs, and perennials need consistent moisture until they become established and the ground begins to freeze.

What can I use to refresh containers in September?
Mums, ornamental kale, grasses, foliage plants, and other cool-season selections are good choices for extending container color into fall.

Is September a good time to repair my lawn?
Yes. In southeastern Massachusetts, early fall is generally one of the best periods for seeding and repairing thin or damaged turf.