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Nodding Waternymph (Najas flexilis)

  • Nodding Waternymph (Najas Flexilis) https://www.sagebud.com/nodding-waternymph-najas-flexilis/
    Credit: USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 90. | http://plants.usda.g... | License: PD US
  • Nodding Waternymph (Najas Flexilis) https://www.sagebud.com/nodding-waternymph-najas-flexilis/
    Credit: Robert H. Mohlenbrock @ USDA-NRCS PLANTS Database / USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species. Northeast National Technical Center, Chester. | http://plants.usda.g... | License: PD US Government
  • Nodding Waternymph (Najas Flexilis) https://www.sagebud.com/nodding-waternymph-najas-flexilis/
    Credit: E. Gilg and K. Schumann, Das Pflanzenreich. Hausschatz des Wissens | http://www.biolib.de | License: PD Old
NAFL.jpg

Najas Flexilis, or more commonly know as Nodding Waternymph, is a forb/herb (a forb/herb is a non-woody plant that is not a grass) with green foliage and green flowers of the genus Najas. It has a rapid growth rate and a height of 2.5 feet at maturity. Its duration is annual which means it grows for one season only. It's active growth period is spring summer fall, blooms during late summer and is somewhat tolerant of shade. Najas Flexilis or Nodding Waternymph's floral region is North America US Lower 48 and Alaska, specifically in the states of Alaska, Arizona, California, Connecticut, Iowa, Idaho, Illinois, Indiana, Kentucky, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Montana, North Dakota, Nebraska, New Hampshire, New Jersey, New York, Ohio, Oregon, Pennsylvania, Rhode Island, South Dakota, Utah, Virginia, Vermont, Washington and Wisconsin.

  • Category: Monocot
  • Genus: Najas
  • Family: Najadaceae
  • Order: Najadales
  • Class: Liliopsida
  • Division: Magnoliophyta
  • Duration: Annual
  • Growth Habit: Forb/herb
  • Native Status: L48 (N) AK (N) CAN (N)
  • National Wetland Indicator Status: OBL
  • Regional Wetland Indicator Status: 1(OBL) 2(OBL) 3(OBL) 4(OBL) 5(OBL) 7(OBL) 8(OBL) 9(OBL) 0(OBL)
  • Active Growth Period: Spring Summer Fall
  • After Harvest Regrowth Rate: None
  • Allelopath: No
  • Bloat: None
  • C:N Ratio: Low
  • Coppice Potential: No
  • Fall Conspicuous: No
  • Fire Resistance: Yes
  • 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: Colonizing
  • Growth Rate: Rapid
  • Height Mature (feet): 2.5
  • Leaf Retention: No
  • Lifespan: Short
  • Low Growing Grass: No
  • Resprout Ability: No
  • Shape and Orientation: Semi-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: Yes
  • Drought Tolerance: None
  • Fertility Requirement: Medium
  • Fire Tolerance: High
  • Hedge Tolerance: None
  • Moisture Use: High
  • pH (Minimum): 6.5
  • pH (Maximum): 7.5
  • Planting Density per Acre Minimum: 700
  • Planting Density per Acre Maximum: 1200
  • Salinity Tolerance: Medium
  • Shade Tolerance: Intermediate
  • Temperature Minimum (°F): 47
  • Bloom Period: Late 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: Yes
  • Propagated by Tubers: No
  • Seed Spread Rate: Moderate
  • Seedling Vigor: Medium
  • Small Grain: No
  • Vegetative Spread Rate: Slow





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