Glyceria canadensis Rattlesnake Mannagrass
Native To: New York City Wetland Indicator: OBL Soil: pH 5.0-8.5
Form/Color Moderate grower to 3', stems solitary or Stormwater Insufficient information to determine
few together, blooms and fruits in June- Tolerance: tolerance.
August.
Urban Adapted to coarse, medium, and fine
Tolerance: soils, moderate tolerance of soil
compaction.
Habitat: Marshes, open, wet woods.
Ecosystem Wildlife value moderate, eaten by
Services: muskrat and deer.
Hydrology: Tolerant of flooding to 50% of growing
season.
Ornamental Graceful drooping inflorescense with
Value: spikelets laterally compressed in an oval Compatibility: Intolerant of competition. Can form
shape. colonies.
Salt Intolerant of salt.
Tolerance: Other:
Shade Tolerant of partial shade.
Tolerance:
Glyceria obtusa Coastal Mannagrass
Native To: New York City Wetland Indicator: OBL Soil: pH 4.0-7.0
Form/Color To 3', blooms and fruits in July- Stormwater Insufficient information to determine
September, inflorescence dense. Tolerance: tolerance.
Urban Adapted to medium and fine soils,
Tolerance: high tolerance of soil compaction.
Habitat: Swamps, wet woods.
Ecosystem Moderately palatable to browse
Services: animals.
Hydrology: Low tolerance to drought.
Ornamental Distinctive upright form with dense ovoid
Value: infloresence. Compatibility: Not a known allelopath, rapid
grower, moderate rate of vegetative
spread.
Salt Intolerant of salt.
Tolerance: Other:
Shade Tolerant of shade.
Tolerance: