River oats (Chasmanthium latifolium)

River oats (Chasmanthium latifolium) Seeds

$ 4.75

With its beautiful pale green foliage and flattened nodding seed heads in late summer, this clump-forming grass is a great addition to a garden or informal landscape. Dried seed stalks make beautiful winter arrangements. Will self-seed vigorously in a garden so harvest the seeds if that is not desired. Looks very handsome in a large pot. Host plant for skipper butterflies. Deer-resistant.

Native to Maine: No. Native from Pennsylvania west to the prairie states and throughout the Southeast.

Growing conditions: Sun to part shade in medium to wet soil

Grows up to: 3'

Pairs well with: Ferns and wood asters

Natural habitat: Streamsides and river floodplains, moist, open woods, and wet meadows

Seeds per packet: 50-100

Germination Code(s): A
"A" seeds do not need a winter or cold period to germinate. Sow these seeds outdoors in pots from November through May. A great species for beginner seed-sowers.

Each seed package carries a specific germination code along with the plant description. These codes indicate specific sowing instructions.

  • A Seeds can be sown outdoors in fall or early spring.
  • B Seeds need a winter or cold period to germinate. Sow outdoors in fall or winter.
  • C Seeds need light to germinate; sow on soil surface and leave uncovered.
  • D Seeds need alternating cycles of warm-to-cold-to-warm to germinate. They can be sown either outdoors in spring or summer and will germinate the following year or in a flat in a warm place for 3 months, then moved to a refrigerator for 2 months, then moved outside in the early summer warmth.
  • E Seeds can not be allowed to dry out. Sow immediately.
  • F Seeds take two years to germinate. Sow outside in the fall or winter and look for germination in the second spring. A shady location prevents the flats from rapid drying and reduces weeding
  • G Large seeds should be soaked overnight in water.
  • FERN: Sow spores in a warm bright location in a sealed container and keep moist. Directions enclosed with package. Challenging.

If you have specific questions about seeds and germination guidelines please contact us at info@wildseedproject.net.

All seeds can be sown and placed outdoors in fall or winter bypassing the need for an artificial indoor cold stratification (refrigerator) required for some species when planted in spring. This is the simplest method. See How to Grow Natives From Seed for detailed instructions.