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Index / Search / Najas flexilis

§1 Plant

Najas flexilis (Willd.) Rostk. & Schmidt

vernacular nodding waternymph — species · Najadaceae

USDA
NAFL
GBIF
5329315
Rank
species
nodding waternymph (Najas flexilis)
Platephotograph · Guillermo RodriguezCC BY-NC source · iNaturalist ↗

§2Habit & range

Habit and range

Growth habit
Forb/herb
Duration
Annual
Group
Monocot
Family
Najadaceae Juss.
Genus
Najas
§2a

Native status, by region

  • AK Alaska Native
  • CAN Canada Native
  • L48 Lower 48 States Native
§2b

County-level range

· 435 counties across 29 states/territories
Legend Native · 435 Introduced · 0 Both · 0 Hover a county for detail.

§3Cultivation specs · USDA

Recorded by the USDA Plant Materials Program.

§3a

Tolerances

Drought
None
Shade
Medium
Moisture use
High
Fire
High
Salinity
Medium
Anaerobic
High
CaCO₃
Medium
Hedging
None
§3b

Climate & soil

Cold tolerance
47 °F minimum
pH range
6.5–7.5
Fertility need
Medium
Soil texture
coarse, medium, fine
§3c

Form & growth

Growth form
Colonizing
Growth rate
Rapid
Mature height
2.5 ft
Foliage texture
Fine
Foliage colour
Green
Porosity (summer)
Porous
Porosity (winter)
Porous
Flower colour
Green
Fruit colour
Green
Fire resistant
Yes
N fixation
None
Toxicity
None
§3d

Reproduction

Bloom period
Late Summer
Seed abundance
Medium
Seed begins
Summer
Seed ends
Fall
Spread rate
Moderate
Stratify
Yes
Propagation
seed, sprigs
§3e

Use & availability

Commercial availability
Routinely Available
Nursery stock
No
Palatable, human
Yes
Lumber
No
Christmas tree
No

§4Counties, by state

Recorded in 435 counties across 29 states/territories.

Alaska view state ↗ 5 N ▾
Arkansas view state ↗ 1 N ▾
District of Columbia view state ↗ 1 N ▾
Idaho view state ↗ 4 N ▾
Illinois view state ↗ 30 N ▾
Indiana view state ↗ 16 N ▾
Iowa view state ↗ 3 N ▾
Kentucky view state ↗ 1 N ▾
Maine view state ↗ 16 N ▾
Massachusetts view state ↗ 13 N ▾
Michigan view state ↗ 67 N ▾
Minnesota view state ↗ 43 N ▾
Mississippi view state ↗ 1 N ▾
Missouri view state ↗ 4 N ▾
Montana view state ↗ 3 N ▾
Nebraska view state ↗ 6 N ▾
New Hampshire view state ↗ 10 N ▾
New Jersey view state ↗ 12 N ▾
New York view state ↗ 48 N ▾
North Dakota view state ↗ 5 N ▾
Ohio view state ↗ 16 N ▾
Pennsylvania view state ↗ 31 N ▾
Rhode Island view state ↗ 4 N ▾
South Dakota view state ↗ 6 N ▾
Utah view state ↗ 1 N ▾
Vermont view state ↗ 14 N ▾
Virginia view state ↗ 13 N ▾
West Virginia view state ↗ 6 N ▾
Wisconsin view state ↗ 55 N ▾

§5Sources & provenance

USDA PLANTS

Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.

plants.usda.gov/NAFL ↗

GBIF Backbone

Canonical taxonomic identity, synonym resolution, cross-refs. CC0.

gbif.org/species/5329315 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-26

fetched 2026-05-26T13:12:28Z