Slender Waternymph
Najas gracillima
Found in ponds, lakes, slow-moving streams. Weakley, Flora of the Southeastern United States (2025), Northern Tier edition What its natural habitat tells you
Native to West Virginia. How scores work Is it native here?
Profile 88%
- Height
- 4–20 inches
- Light
- Partial shade, Full sun
- Soil moisture
- Standing water
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Rare or protected plant. Specialist conservation planting; excluded from routine garden suggestions. Plant caution source
Hidden from default planting suggestions. Wildlife value and native status remain unchanged.
At a glance
- Life cycle
- Annual
- Bloom
- July to October
Not yet recorded · Spread · Leaves
Recorded in 2 West Virginia counties.
Natural habitats
Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.
Still water and its edges: ponds, lakes, millponds and reservoirs.
Streams, rivers and their banks
Flowing water and its banks, bars and rocky shoals.
Also found with this plant
Wildlife whose habitat models include habitats this plant grows in, in West Virginia. Shared habitat, not food. 74 animals.
Widespread birds also seen here (45)
Found in many habitats here, so not listed above.
- Alder Flycatcher
- American Crow
- American Goldfinch
- American Kestrel
- American Redstart
- American Robin
- Belted Kingfisher
- Black-billed Cuckoo
- Blue Grosbeak
- Blue Jay
- Blue-gray Gnatcatcher
- Cedar Waxwing
- Chimney Swift
- Chipping Sparrow
- Common Nighthawk
- Common Raven
- Common Yellowthroat
- Cooper's Hawk
- Eastern Kingbird
- Eastern Towhee
- European Starling
- Gray Catbird
- Great Crested Flycatcher
- Great Horned Owl
- Least Flycatcher
- Mourning Dove
- Northern Cardinal
- Northern Flicker
- Northern Mockingbird
- Olive-sided Flycatcher
- Orange-crowned Warbler
- Osprey
- Purple Finch
- Red-tailed Hawk
- Red-winged Blackbird
- Ruby-crowned Kinglet
- Sharp-shinned Hawk
- Spotted Sandpiper
- Tufted Titmouse
- Turkey Vulture
- Veery
- White-throated Sparrow
- Wild Turkey
- Yellow-breasted Chat
- Yellow-rumped Warbler
Who uses this plant?
8BirdsRecorded eating Najas in West Virginia
Diet records by plant genus, from studies across North America. Not a record from this state. Birds whose range includes West Virginia, most records first.
- American Wigeon2 diet records
- Greater Scaup2 diet records
- Northern PintailSeeds. 2 diet records
- Snow Bunting2 diet records
- Eurasian Wigeon1 diet record
- Lesser ScaupSeeds. 1 diet record
- MallardSeeds. 1 diet record
- Northern ShovelerLeaves. 1 diet record
Direct food only. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening
No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects
Birds that eat Najas 8
Diet records by plant genus, from studies across North America. Not a record from this state. Avian Diet Database (Hurlbert Lab), CC0 1.0.
- American WigeonAnas americana
- Greater ScaupAythya marila
- Northern PintailAnas acuta
- Snow BuntingPlectrophenax nivalis
- Eurasian WigeonAnas penelope
- Lesser ScaupAythya affinis
- MallardAnas platyrhynchos
- Northern ShovelerAnas clypeata
Plant details
- Family
- Hydrocharitaceae
- Flower color
- White, green or brown
Growing sources and scope
- Bloom · “July to October” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
- Flower color · “White, green or brown” · Lady Bird Johnson Wildflower Center
- Height · “4–20 inches” · Minnesota Wildflowers
- Life cycle · “Annual” · Minnesota Wildflowers
- Light · “Partial shade; Full sun (documented habitat)” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
- Soil · “Water (documented habitat)” · Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition · Carolinas and Georgia
Also known as
Slender Naiad; Slender Water Nymph
Conservation status
| West Virginia rank | S2 |
|---|---|
| Global rank | G4G5 |
| WV status | Not verified |
| Federal status | Not verified |
Will it fit your yard?
Check this plant against your county, sun and soil moisture. Conditions are checked in your browser.
Sources
- NatureServe Explorer
- USDA PLANTS
- Vascular Plants of North Carolina (NC Natural Heritage Program)
- Weakley, Flora of the Southeastern United States (2025)
- West Virginia occurrence source
- Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
- Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
- Smith, Bachelder, Russell, Morales, Mosher & Seltmann 2024, Bee-Specialization-Modeling v0.6.1 (specialist host table compiled from J. Fowler's pollen specialist bee lists), Zenodo, CC BY 4.0
- Hurlbert, Olsen, Sawyer & Winner 2021, Avian Diet Database, Scientific Data 8: 260 (CC0)
- Narango, Tallamy & Shropshire 2020, Few keystone plant genera support the majority of Lepidoptera species, Nature Communications









