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Chasmanthium latifolium (North America wild oats)

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Skill rating Beginner
skill rating
Ultimate spread 0.6m
max. spread
Ultimate height 1m
max. height
Time to maturity 2-5 years
to maturity
Maintenance level 1 hour care
per year

Botanical name: Chasmanthium latifolium

Other names: North America wild oats, Northern sea oats, Spangle grass, Sea oats, Uniola latifolia , Indian wood-oats, Broadleaf uniola


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Genus: Chasmanthium

Species: C. latifolium - C. latifolium is a loosely-tufted, spreading, deciduous, perennial grass with narrowly lance-shaped, arching, mid-green leaves that turn yellow in winter and, in late summer and early autumn, open panicles of flat, lance-shaped to ovate green spikelets, ageing to brown.

Chasmanthium latifolium is: Deciduous

Flower: Green in Summer; Pale-brown in Autumn

Foliage: Mid-green in Spring; Mid-green in Summer; Yellow-brown in Autumn; Yellow-brown in Winter

Habit: Arching, Clump-forming, Spreading

Plant with: Verbena bonariensis (Purple top), Rudbeckia fulgida var sullivantii 'Goldsturm' (Black-eyed Susan), Perovskia 'Blue Spire' (Perovskia 'Blue Spire'), Rudbeckia 'Herbstsonne' (Coneflower 'Herbstsonne'), Nepeta govaniana (Catmint), Macleaya x kewensis 'Flamingo' (Plume poppy 'Flamingo), Papaver orientale 'John III' (Oriental poppy 'John III'), Duranta erecta (Golden dewdrop), Verbena hastata f. rosea 'Pink Spires' (Pink vervain 'Pink Spires'), Verbena hastata 'Blue Spires' (Verbena 'Blue Spires'), Perovskia 'Taiga' (Perovskia 'Taiga'), Verbena bonariensis 'Lollipop' (Purple top 'Lollipop'), Perovskia atriplicifolia (Russian sage)

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Watch out for

Pests: Generally pest free

Diseases: Generally disease free

General care

Pruning: Cut back in late winter.. REGISTER to read more...

Propagation methods: Division, Seed. REGISTER to read more...


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Chasmanthium latifolium (North America wild oats) will reach a height of 1m and a spread of 0.6m after 2-5 years.


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Suggested uses: Beds and borders, Cottage/Informal, Flower Arranging, Low Maintenance, Prairie planting

Cultivation: Grow in full sun in most moist, well-drained, fertile soils.

Suitable for your garden?
In progress indicator
This plant likes... Garden match
Soil types: Chalky, Clay, Loamy, Sandy (will tolerate most soil types) Match unknown
Soil drainage: Moist but well-drained, Well-drained Match unknown
Soil pH: Acid, Alkaline, Neutral Match unknown
Light: Partial Shade, Full Sun Match unknown
Aspect: North, South, East, West Match unknown
Exposure: Exposed, Sheltered Match unknown
Hardiness: Hardy (H4) Match unknown

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We list 1 supplier who tell us they sell Chasmanthium latifolium (North America wild oats). In order to see the list you'll need to either register or log in as a full member.


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