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Atlantic Mannagrass (Glyceria Obtusa)

Glyceria Obtusa, or more commonly know as Atlantic Mannagrass, is a graminoid with green foliage and green flowers of the genus Glyceria. It has a rapid growth rate and a height of 3.3 feet at maturity. Its duration is perennial which means it will grow year after year. It’s active growth period is spring, blooms during summer and is tolerant of shade. Glyceria Obtusa or Atlantic Mannagrass‘s floral region is North America US Lower 48, specifically in the states of Connecticut, Delaware, Massachusetts, Maryland, Maine, North Carolina, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, South Carolina and Virginia.

Atlantic Mannagrass (Glyceria Obtusa) Native Growing Regions

Native States for Atlantic Mannagrass (Glyceria Obtusa)
Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, North Carolina, Pennsylvania, Rhode Island, South Carolina, Virginia

Atlantic Mannagrass (Glyceria Obtusa) Information

  • Category: Monocot
  • Genus: Glyceria
  • Family: Poaceae
  • Order: Cyperales
  • Class: Liliopsida
  • Division: Magnoliophyta
  • Duration: Perennial
  • Growth Habit: Graminoid
  • Native Status: L48 (N) CAN (N)
  • State T/E Status: PA (E)
  • State T/E Common Name: PA (blunt manna-grass)
  • National Wetland Indicator Status: OBL
  • Regional Wetland Indicator Status: 1(OBL) 2(OBL)
  • Active Growth Period: Spring
  • After Harvest Regrowth Rate: Slow
  • Allelopath: No
  • Bloat: None
  • Coppice Potential: No
  • Fall Conspicuous: No
  • Fire Resistance: No
  • Flower Color: Green
  • Flower Conspicuous: No
  • Foliage Color: Green
  • Foliage Porosity Summer: Porous
  • Foliage Porosity Winter: Porous
  • Foliage Texture: Fine
  • Fruit/Seed Color: Green
  • Fruit/Seed Conspicuous: No
  • Growth Form: Rhizomatous
  • Growth Rate: Rapid
  • Height Mature (feet): 3.3
  • Leaf Retention: No
  • Lifespan: Short
  • Low Growing Grass: No
  • Resprout Ability: No
  • Shape and Orientation: Erect
  • Toxicity: None
  • Adapted to Coarse Textured Soils: No
  • Adapted to Fine Textured Soils: Yes
  • Adapted to Medium Textured Soils: Yes
  • Anaerobic Tolerance: High
  • CaCO3 Tolerance: Medium
  • Cold Stratification Required: No
  • Drought Tolerance: Low
  • Fertility Requirement: Medium
  • Fire Tolerance: None
  • Frost Free Days Minimum: 140
  • Hedge Tolerance: None
  • Moisture Use: High
  • pH (Minimum): 4
  • pH (Maximum): 7
  • Planting Density per Acre Minimum: 10912
  • Planting Density per Acre Maximum: 19912
  • Precipitation (Minimum): 40
  • Precipitation (Maximum): 50
  • Root Depth Minimum (inches): 4
  • Salinity Tolerance: None
  • Shade Tolerance: Tolerant
  • Temperature Minimum (°F): -8
  • Bloom Period: Summer
  • Commercial Availability: Routinely Available
  • Fruit/Seed Abundance: Medium
  • Fruit/Seed Period Begin: Summer
  • Fruit/Seed Period End: Fall
  • Fruit/Seed Persistence: No
  • Propagated by Bare Root: No
  • Propagated by Bulbs: No
  • Propagated by Container: No
  • Propagated by Corms: No
  • Propagated by Cuttings: No
  • Propagated by Seed: No
  • Propagated by Sod: No
  • Propagated by Sprigs: Yes
  • Propagated by Tubers: No
  • Seed Spread Rate: Moderate
  • Seedling Vigor: Medium
  • Small Grain: No
  • Vegetative Spread Rate: Moderate

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