Northern Sea Oats, Chasmanthium latifolium, is a very ornamental woodland grass with gorgeous seed heads that are beautiful in dried arrangements as well as in the garden. This native grass grows best in shaded areas with fertile soils. An excellent …
Northern Sea Oats, Chasmanthium latifolium, is a very ornamental woodland grass with gorgeous seed heads that are beautiful in dried arrangements as well as in the garden. This native grass grows best in shaded areas with fertile soils. An excellent choice for planting under the light shade of oaks and hickories, or any semi-shaded garden. Plant it in a protected location.
Several species of Lepitoptera, such as Northern Pearly-eye, Gemmed Satyr, Pepper and the Salt Skipper, are known to use Northern Sea Oats as a host plant.
Native plants can be grown outside of their native range in the appropriate growing conditions. This map shows the native range, as well as the introduced range, of this species.
Plant Shipping Rates: Plant orders of $50.00 and under, add $9.95 shipping charge. Plant orders over $50.00, add 18% of the total plant cost.
We ship plants in the spring, and in the fall, during our plant-shipping periods. Fall plant-shipping begins on September 11, 2023, and the last day to order plants for fall shipment is October 1, 2023.
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As with most native grasses, Northern Sea Oats is a strong self seeder. If left to its own devices, it can spread agressively, over time. However, a few clumps of seaoats in are garden are easy to manage. Cut off the seed heads in late fall, and do not let the seed heads lay on the ground, and the self seeding will not be an issue. This is easy to do with a few plants but would be difficult if the grass is planted in great quantity. The root system has some rhizomes but is mainly a bunch-forming fibrous root system.
Does Northern Sea Oats form a clump, or does it spread rapidly?
Northern Sea Oats has a fibrous root system and forms a large clump at maturity. It will spread by self-seeding. The new plant seedings are often relatively close to the parent.
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