Image of Glyceria canadensis
Source: Marilynn Miller
image of Grass
Glyceria canadensis
Canada Mannagrass
Glycérie du Canada

Obsolete Names

Canadian glyceria
Canadian mannagrass
rattlesnake mannagrass
Seeds available at table Mixed Sun, Wet
We currently accept seeds for this plant
Bloom colour: Green Bloom period: Jun - Aug
Max Height: 3.0 feet
Max Width: 3.0 feet (spreads by rhizome)
Light condition:
Full sun More than 6 hours of direct sun a day
Part shade More than 2 or 3 hours but less than 6 hours of direct sun a day
Soil conditions:
Moisture medium Tolerates medium soil condition
Lifespan: Perennial plants that will that come back year after year
Gardener Experience:
does not spread Does not spread uncontrollably
plant germinate easy Easy to germinate
Landscape uses:
wetland garden Suitable for wetland garden
rain garden Suitable for rain gardens
Ecological Benefits: No ecological benefits information available.
Tolerates:
acidic soil Tolerant Tolerates acidic soil conditions
Special Features and Considerations:

Plant Location

Native to Ottawa region: Yes

Distribution according to VASCAN

Distribution: Glyceria canadensis
Ephemeral Native Introduced Excluded Extirpated Doubtful Absent
View taxonomy on Canadensys

View on iNaturalist

Thrives in Ecozones

  • Atlantic Maritime
  • Boreal Plains
  • Boreal Shield
  • Pacific Maritime
  • Mixed Wood Plains

Ecological Benefits

Butterflies Supported by Glyceria canadensis

No butterfly data available for this plant.

Specialized Bees Supported by Glyceria canadensis

No bee data available for this plant.

Plants that grow in similar conditions, that bloom at the same time.

Complementary Plants

Substitute For Non-Native Plants

  • Miscanthus (Silvergrass)
  • Pennisetum setaceum (Fountain Grass)

Sowing Information

Download Sowing Label (PDF)
  • Sowing depth: Surface sow
  • Sow anytime
  • Stratification duration: 0 days
  • Notes: Can be sown in late spring in warm soil. Scarify if not hulled.

Harvesting and Seed Sharing

  • Harvest start month: September
  • Harvesting indicator: Seeds easily fall off when you gently pull them off
  • Harvesting mean: Use hand to detach from main stem
  • Seed viability test: No test needed before donating
  • Packaging measure: 1 rounded 1/8 teaspoon
  • Seed storage: Air dry in paper bag or open container, for a few days until crisp, shaking seeds to move them once in a while to prevent molding
  • At least one cultivar: No, you can donate without knowing the source as there are only straight species
  • Remove non seed material
  • No harvesting video available at this time.

Toxicity Notes

Inadequate information on toxicity found.