Natives by ZIP

Native plants recorded in your state and county

Wildflower (forb) · Hydrocharitaceae

Canadian waterweed

Elodea canadensis

Canadian waterweed is recorded as native to 39 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 670 counties of those states by USDA PLANTS.

Recorded native ranges can include long-established populations that spread from gardens; check your state’s native plant society list for local guidance. How native status is decided.

Key facts · USDA PLANTS

Canadian waterweed at a glance

Native in
670 counties, across 39 states and territories
Estimated cold hardiness
Zone 4a PLANTS minimum temperature −33°F
Mature height
Not recorded PLANTS mature height
Light and water
Full sun (shade-intolerant) High water use

Estimated cold hardiness: zone 4a. PLANTS gives a minimum temperature of −33°F; zone 4a winters bottom out at −30°F, the coldest half-zone that stays within that limit.

Canadian waterweed is recorded as native to 39 states and territories in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in 670 counties of those states by USDA PLANTS.

Counties where it is native

The 15 counties with the most ZIP codes among the 670 where it is listed.

Native counties by state

Growing traits

Values from the PLANTS characteristics record. “Not recorded” means PLANTS has no value; nothing here is estimated except the zone.

Growth

Growth habit
Forb/herb
Duration
Perennial
Mature height
Not recorded
Growth rate
Rapid
Growth form
Multiple Stem
Shape
Erect
Lifespan
Long
Active growth period
Spring

Light and water

Shade tolerance
Intolerant (full sun (shade-intolerant))
Moisture use
High water use
Drought tolerance
None
Tolerance of waterlogged soil
High
Precipitation range
12 to 60 in per year

Soil

Soil textures
Fine
pH range
4.8 to 7.8
Lime (CaCO₃) tolerance
High
Salinity tolerance
None
Fertility requirement
Medium
Minimum root depth
0 in

Climate

Minimum temperature
−33°F
Estimated cold hardiness
Zone 4a and warmer
Minimum frost-free days
160
Fire tolerance
Not recorded

Flowers, leaves and fruit

Flower color
White
Showy flowers
No
Bloom period
Summer
Foliage color
Gray-Green
Showy in fall
No
Keeps leaves
No
Fruit color
Yellow

Other

Toxicity
None
Nitrogen fixation
None
Nursery availability
Routinely Available
Family
Hydrocharitaceae
PLANTS symbol
ELCA7

Is it native where you live?

Matches your ZIP to the county it mostly lies in, then lists the plants recorded as native to your state (Kew’s World Checklist and USDA PLANTS) and recorded in that county by USDA PLANTS.

Source & data date

Source
USDA NRCS PLANTS Database: county distribution records, native status and plant characteristics. CC0 (public domain dedication, per the data.gov catalog record).
Kew’s World Checklist of Vascular Plants (WCVP): native or introduced status by state. CC BY 3.0.
USGS US-RIIS (ver. 2.0): species listed as introduced are excluded. CC0.
Citation
USDA, NRCS. 2026. The PLANTS Database (https://plants.usda.gov, 11/04/2026). National Plant Data Team, Greensboro, NC USA.
Govaerts R. (ed.) (2026). WCVP: World Checklist of Vascular Plants. Facilitated by the Royal Botanic Gardens, Kew. Data file dated 2026-06-04, http://sftp.kew.org/pub/data-repositories/WCVP/ (retrieved 2026-11-04). Paper: Govaerts R. et al. (2021) The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. Scientific Data 8, 215.
Data date
Retrieved from PLANTS on November 4, 2026; WCVP data file dated June 4, 2026.
Scope
Elodea canadensis (PLANTS symbol ELCA7).
Method
A species is listed when it is recorded as native to the state in Kew’s World Checklist of Vascular Plants and USDA PLANTS, and recorded in the county by USDA PLANTS. Species PLANTS labels both native and introduced are listed separately. Full method · All sources

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