Northern Sea Oats (Chasmanthium latifolium)

Common names:
Give a thumbs up Northern Sea Oats
Give a thumbs up Inland sea oats
Give a thumbs up Indian Woodoats
Give a thumbs up Spangle Grass
Give a thumbs up Upland Sea Oats
Give a thumbs up Upland Oats
Give a thumbs up Flathead oats
Give a thumbs up River oats
Give a thumbs up Wild oats
Give a thumbs up Indian wood oats
Give a thumbs up Broadleaf Uniola

General Plant Information (Edit)
Plant Habit: Grass/Grass-like
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Partial or Dappled Shade
Water Preferences: Wet Mesic
Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Minimum cold hardiness: Zone 3 -40 °C (-40 °F) to -37.2 °C (-35)
Maximum recommended zone: Zone 9b
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
Fall
Late fall or early winter
Winter
Flower Color: Green
Bloom Size: Under 1"
1"-2"
Flower Time: Late spring or early summer
Summer
Late summer or early fall
Underground structures: Rhizome
Uses: Provides winter interest
Erosion control
Groundcover
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

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Comments:
Posted by ILPARW (southeast Pennsylvania - Zone 6b) on Feb 12, 2018 1:39 PM

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.

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Posted by LindaTX8 (Medina Co., TX - Zone 8a) on Jan 18, 2012 4:06 PM

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.

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Plant Events from our members
MissMew On June 8, 2014 Obtained plant
Both plants replaced June 2015
One plant removed June 2016
bloominholes2fill On April 17, 2017 Miscellaneous Event
Three divisions didn't survive the 2015 Winter. Fall of 2016: Moved one of the two remaining divisions to the NE garage garden. The other surviving division was moved to a different location in the NE tree garden.
bloominholes2fill On April 17, 2017 Miscellaneous Event
5 Divisions planted in NE tree garden in 2014.
bloominholes2fill On March 15, 2017 Plant emerged
bloominholes2fill On April 1, 2012 Obtained plant
christine2 On May 1, 2008 Obtained plant
» Post your own event for this plant

Discussion Threads about this plant
Thread Title Last Reply Replies
blooming in Dec by Strever Dec 18, 2017 5:05 PM 21
Looking for seeds of Echium simplex for SASE or trade... by wcgypsy Dec 4, 2017 6:37 PM 0
What do you grow from seed? by DomehomeDee Nov 24, 2016 10:03 PM 28
Shade plants you love by Lestv Dec 31, 2015 7:13 PM 12
Do you garden with Wildflowers? Tell us all about it. by frostweed Mar 20, 2014 5:21 PM 130
What did you do today? by Leftwood May 22, 2018 4:23 AM 3,185
New Grasses for Me....... by wcgypsy Aug 14, 2011 8:54 AM 8
Let's see your mixed borders with lilies by PollyK Jul 8, 2010 5:01 PM 255
Chat thread by wcgypsy Apr 10, 2018 7:38 AM 10,518
Gardening with Texas Native Plants and Wildflowers, The Front Yard. by frostweed Apr 25, 2018 9:04 AM 115

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