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Panicum amarum (bitter switchgrass) in bloom
Panicum amarum (bitter switchgrass) in late fall garden
Panicum amarum (bitter switchgrass) in the fall garden
Panicum amarum (bitter switchgrass) with Vernonia gigantea
Panicum amarum (bitter switchgrass) summer foliage
Panicum amarum (bitter switchgrass) lovely orange flowers
Panicum amarum (bitter switchgrass) close up of flowers
Panicum amarum (bitter switchgrass)  grown in moist, cool soil in late fall garden
Panicum amarum (bitter switchgrass)  grown in moist, cool soil in late fall garden

bitter switchgrass

Panicum amarum

Regular price
$18.99
Regular price
Sale price
$18.99
Shipping calculated at checkout.

ships spring 2025

PLEASE KNOW: Plants shipped in early spring are likely to arrive dormant.

Bitter Switchgrass is a ridiculously hardy, ridiculously tough ornamental grass that can be found growing anywhere from the most elegant garden to the side of the road. The arching blue-green leaves are attractive throughout the growing season, but the real show comes when the airy tawny pink flower panicles appear in late summer or early fall.

This salt tolerant grass is commonly used along beaches for erosion control, but will tolerate a wide variety of conditions. Blue foliage color and blooms are best when grown in loose, warm, well-drained soil (see photos 1-4). Foliage is greener and blooms are significantly diminished on cool, moist soil (see photo 8-9).

Zones: 2-9
Family: Poaceae
Type: Deciduous Grass
Height: 36 to 48 inches
Spread: 24 to 36 inches
Exposure: Full Sun
Soil Conditions: Average, dry, lean, undemanding
Bloom Time: August to October
Native Range: sandy dunes and shores in coastal areas from Connecticut to Florida to Texas

Special Characteristics
  • Deer-resistant
  • Salt tolerant
  • Rabbit resistant
  • Outstanding fall color
image credits

Ali McEnhill, The Old Dairy Nursery

Panicum amarum (bitter switchgrass) in bloom
Panicum amarum (bitter switchgrass) in late fall garden
Panicum amarum (bitter switchgrass) in the fall garden
Panicum amarum (bitter switchgrass) with Vernonia gigantea
Panicum amarum (bitter switchgrass) summer foliage
Panicum amarum (bitter switchgrass) lovely orange flowers
Panicum amarum (bitter switchgrass) close up of flowers
Panicum amarum (bitter switchgrass)  grown in moist, cool soil in late fall garden
Panicum amarum (bitter switchgrass)  grown in moist, cool soil in late fall garden

Ordering information

Preorders

You may place your order anytime to reserve plants for spring 2025 shipment. If you place multiple orders, we will combine plants into one box (or as many as needed) and any extra shipping charges will be refunded when we ship.

We will begin shipping plants as soon as plants begin to emerge from dormancy in spring. Woodies will likely begin shipping in April. Perennials will likely begin shipping in May. If ordering multiple varieties, we will hold until all plants are ready to ship together. If you would like to receive plants sooner please reach out.

We will check in with you a week before shipping to make sure you receive your plants at a time that is convenient for you.

Shipping

Live plants ship in spring and fall only. Plants may ship dormant, depending on variety and season. Shipping costs are most reasonable when bundling like size plants.

  • 4-inch: 1-6 plants ship for $15.00 / 7-13 plants ship for $18.00 / 14-30 plants ship for $40.00
  • 1-gal: 1-2 plants ship for $18.00 / 3-4 plants ship for $25.00 / 5-6 plants ship for $40.00
  • trees & shrubs: $27.00-$40.00 each, height dependent

We regret that we cannot ship internationally or to the following states: AK, AZ, CA, CO, FL, HI, ID, MT, NV, OR, UT, or WA.

Read more about our shipping policies here.

Nursery pick up

Plants can be collected from the nursery Monday through Sunday from 10am-4pm in Spring, Summer, and Fall. We prefer 24 hour notice to get your order together and will email you when ready for collection.

If you place a SPRING 2025 PREORDER, we will contact you in spring when your plants are ready for collection. Woodies will likely become available for collection in April. Perennials will likely become available in May. If ordering multiple varieties, we will hold until all plants are ready to be collected together.

Plant Sizes

We most commonly use the following pot sizes for perennials:

  • 4-inch pot: 3.5" H x 3.5" W x 3.5" D
  • 2-quart pot: 6" H x 5.25" W x 5.25" D
  • 1-gallon pot: 6.87" H x 8" Dia (this is a true one gallon pot, not the smaller 'trade' one gallon pot used by many nurseries)

Check out our illustrated pot size guide here.

Representative trees & shrubs are photographed in their pots and posted on each plant page.

Sustainability

Sustainability is at the heart of what we do at The Old Dairy. We grow all of our plants outdoors without the use of chemicals, fertilizers, carbon fuels, or peat.

Many of our perennials are grown in the ground and dug upon order (this is especially true for larger sizes). This practice allows us to grow stronger, healthier plants using native soil, and ultimately reduces our impact on the environment.

Our open-pollinated seeds are collected from plants in our mother beds, which have never been treated with chemicals or sprays of any kind.

Read all about our sustainable practices here.

garden location coming soongarden location coming soon
Panicum amarum (bitter switchgrass) in the fall gardenPanicum amarum (bitter switchgrass) in the fall garden

view this plant in our garden

Panicum amarum | Nursery: Greenhouse Garden and The Loop 2024

seedling image

Panicum amarum

We are slowly creating a seedling image library to help make weeding easier.
Panicum amarum (bitter switchgrass) in the fall gardenPanicum amarum (bitter switchgrass) in the fall garden
garden location coming soongarden location coming soon