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Northern Sea Oats
Organic Ornamental Grass Seed

Product ID: 1597G

Sturdy, glittering perennial grass.

We're sorry, this product has been discontinued and is no longer available. Strong, stiff stems produce copper-colored, airy seed heads that add sparkle and graceful, arching lines to arrangements. A resilient accent plant in perennial garden beds. Plants are bright green early in the season (June through July); in August–September, the spikelets transform to a beautiful copper color and the leaves turn to a contrasting lime green. Seed heads are 4–6" long, each producing multiple spikelets 3/4–1" long. Produces inflorescence (seed heads) in the first year from an early spring or late winter sowing, but plants will be short, about 12", and produce small clumps of flowering stems. In the second year of growth, plants are much more robust, producing more stems and seed heads, and reaching their full height potential of 24–36". Pairs well with almost any color in arrangements, but especially creamy yellow, salmon, blush, and white. Holds well both fresh and dried. Native to the Eastern U.S. and Northern Mexico. Also known as Indian wood oats. Perennial in Zones 5–9. USDA Certified Organic. Ht. 24–36". Avg. 10,900 seeds/oz. Packet: 100 seeds.


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500 Seeds

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1,000 Seeds

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5,000 Seeds

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  • This product does not ship to Canada.
DAYS TO GERMINATION: 7-14 days at 70°F (21°C)

SOWING: Transplant (recommended) - Sow 8-12 weeks before last frost date. Transplant into cell packs or 3-4" containers when seedlings have second or third set of leaves. Transplant outdoors after danger of frost has passed.





HARVEST: Fresh or Dried: Harvest when seed heads have matured but still show some green color. Seed heads might shatter if harvested after fully they have fully turned to a dark copper color.

USES: Excellent cut or dried flower. Accent plant for perennial beds, especially in shady or damp conditions. Mid-border in naturalistic or mixed grass plantings.

SCIENTIFIC NAME: Chasmanthium latifolium

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Quick Facts

Latin Name

Chasmanthium latifolium

Days To Maturity

Average number of days from seeding date to harvest, within a specific crop group. If a transplanted crop: average number of days from transplant date. Not sure if crop is direct-seeded or transplanted? Check the Growing Information box for details. If crop can be both direct-seeded or transplanted, days to maturity refers to direct seeding. Days to maturity for all flowers and herbs is calculated from seeding date.

160 - 365 Days

Life Cycle

Plants can be Annuals (single growing season), Perennials (grow year after year), Tender Perennials (grow year after year in warmer climates; and in some cases when given special protection in colder climates), or Biennials (require two years to mature).


Hybrid Status

Hybrid: The offspring of a cross between two or more distinct parent lines, usually of same species, and selected for improved traits.
Open-pollinated: A non-hybrid variety that can reproduce itself in kind, demonstrating relatively stable traits from one generation to the next.

Open Pollinated

Product Features

Use for Cut Flowers and Bouquets Use for Cut Flowers and Bouquets
Variety good for fresh cut-flower displays.
Ideal for Drying and Crafts Ideal for Drying and Crafts
Variety is excellent for creating dried flowers.
Organic Seeds, Plants, and Supplies Organic Seeds, Plants, and Supplies
Plants, or seeds harvested from plants, that have been grown without synthetic fertilizers or pesticides, strictly adhering to the USDA's National Organic Standards Board (NOSB) organic gardening practices are designated as Organic.

Supplies that meet the USDA's National Organic Program (NOP) rules according to a third-party authority such as OMRI, WSDA, and/or a local authority such as MOFGA or NOFA.

Organic Seeds, Plants, and Supplies Use for Cut Flowers and Bouquets Ideal for Drying and Crafts