General Plant Information (Edit)
Plant Habit: Grass/Grass-like
Sun Requirements: Full Sun
Full Sun to Partial Shade
Partial or Dappled Shade
Water Preferences: Wet Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Plant Height: 2 to 4 feet
Plant Spread: 1 to 2 feet
Leaves: Good fall color
Unusual foliage color
Fruit: Showy
Fruiting Time: Late summer or early fall
Late fall or early winter
Flower Color: Green
Bloom Size: Under 1"
Flower Time: Late spring or early summer
Late summer or early fall
Underground structures: Rhizome
Uses: Provides winter interest
Erosion control
Dried Flower
Will Naturalize
Propagation: Seeds: Stratify seeds: 2 months cold moist treatment
Propagation: Other methods: Division
Pollinators: Wind
Containers: Suitable in 3 gallon or larger

Common names
  • Northern Sea Oats
  • Inland sea oats
  • Indian Woodoats
  • Spangle Grass
  • Upland Sea Oats
  • Upland Oats
  • Flathead oats
  • River oats
  • Wild oats
  • Indian wood oats
  • Broadleaf Uniola

This plant is tagged in:
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  • Posted by ILPARW (southeast Pennsylvania - Zone 6b) on Feb 12, 2018 1:39 PM concerning plant:
    Northern Sea-Oats grows in shaded areas with fertile soils from Missouri to New Jersey and southward. It does well in full sun in gardens or part-shade or under the light shade of oaks and hickories or along woodland edges. The seedheads are held above the foliage and begin as green and ripen to tan in September-October and look sort of like shrimp. It begins as a clump but does spread some by rhizomes. I bought one plant in a pot from a native plant nursery and it has been doing well for over 10 years along the fence in part-shade. The only bad trait is that it self-sows a good amount, and the seedlings are hard to dig out in places one does not want them. It is sometimes sold by conventional nurseries also and is occasionally found in gardens and landscapes around, but not one of the big grass items. It is a pretty perennial.
  • Posted by LindaTX8 (Medina Co., TX - Zone 8a) on Jan 18, 2012 4:06 PM concerning plant:
    An attractive native ornamental grass which prefers slightly moist areas, in the wild might be found near creeks and rivers or moist habitat, but can tolerate drier areas. Leaves look slightly bamboo-like and will form the attractive green seed heads usually in summer, becoming tan to brownish in the fall. In fall, those can be cut and dried for dried flower arrangements or put in a vase by themselves.
Plant Events from our members
bloominholes2fill On March 15, 2017 Plant emerged
bloominholes2fill On April 1, 2012 Obtained plant
christine2 On May 1, 2008 Obtained plant
dnrevel On February 2, 2022 Seeds sown
Winter Sown in jug.
LyraLu On September 25, 2021 Transplanted
planted 3 under silver maple
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