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Dotted Smartweed (Polygonum punctatum)

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Polygonum Punctatum, or more commonly know as Dotted Smartweed, is a forb/herb (a forb/herb is a non-woody plant that is not a grass) with green foliage and white flowers of the genus Polygonum. It has a moderate growth rate and a height of 3.2 feet at maturity. Its duration is annual which means it grows for one season only. It's active growth period is summer, blooms during summer and is intolerant of shade. Polygonum Punctatum or Dotted Smartweed's floral region is North America US Lower 48, Hawaii and Puerto Rico, specifically in the states of Alabama, Arkansas, Arizona, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Iowa, Idaho, Illinois, Indiana, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, New Mexico, New York, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Virginia, Vermont, Washington, Wisconsin and Wyoming.

  • Category: Dicot
  • Genus: Polygonum
  • Family: Polygonaceae
  • Order: Polygonales
  • Class: Magnoliopsida
  • Division: Magnoliophyta
  • Duration: Annual Perennial
  • Growth Habit: Forb/herb
  • Native Status: L48 (N) HI (I) PR (N) CAN (N)
  • National Wetland Indicator Status: FACW OBL
  • Regional Wetland Indicator Status: 1(OBL) 2(FACW+) 3(OBL) 4(OBL) 5(OBL) 6(FACW) 7(OBL) 8(OBL) 9(OBL) 0(OBL) C(FACW+) H(OBL)
  • Active Growth Period: Summer
  • After Harvest Regrowth Rate: Slow
  • Allelopath: No
  • Bloat: None
  • Coppice Potential: No
  • Fall Conspicuous: No
  • Fire Resistance: No
  • Flower Color: White
  • Flower Conspicuous: Yes
  • Foliage Color: Green
  • Foliage Porosity Summer: Moderate
  • Foliage Porosity Winter: Porous
  • Foliage Texture: Medium
  • Fruit/Seed Color: Black
  • Fruit/Seed Conspicuous: No
  • Growth Form: Single Crown
  • Growth Rate: Moderate
  • Height Mature (feet): 3.2
  • Leaf Retention: No
  • Lifespan: Short
  • Low Growing Grass: No
  • Resprout Ability: No
  • Shape and Orientation: Erect
  • Toxicity: None
  • Adapted to Coarse Textured Soils: Yes
  • 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: Low
  • Fire Tolerance: High
  • Frost Free Days Minimum: 110
  • Hedge Tolerance: None
  • Moisture Use: Medium
  • pH (Minimum): 6
  • pH (Maximum): 8.7
  • Precipitation (Minimum): 12
  • Precipitation (Maximum): 60
  • Root Depth Minimum (inches): 14
  • Salinity Tolerance: Medium
  • Shade Tolerance: Intolerant
  • Temperature Minimum (°F): 32
  • 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: Yes
  • Propagated by Sod: No
  • Propagated by Sprigs: No
  • Propagated by Tubers: No
  • Seed per Pound: 125000
  • Seed Spread Rate: Rapid
  • Seedling Vigor: Medium
  • Small Grain: No
  • Vegetative Spread Rate: None




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