Alkali Swainsonpea – Sphaerophysa salsula IntroducedListed
Recorded in 3 of Nevada’s 17 counties. Nevada lists Alkali Swainsonpea under “Category A.”
Nevada (NV) lists 53 plants as noxious weeds under NAC 555.010. Nevada's list is an agricultural noxious-weed law, which governs control and spread on farmland and rights of way rather than what a nursery may sell.
Nevada names 53 plants, including Purple Loosestrife, Canada Thistle and Leafy Spurge. A noxious-weed listing obliges control and limits movement; it does not by itself ban nursery sale. 46 of the 53 are also flagged invasive by GRIIS, which is an ecological finding rather than a ruling by Nevada. Checked against NAC 555.010 on July 20, 2026.
Recorded in 3 of Nevada’s 17 counties. Nevada lists Alkali Swainsonpea under “Category A.”
Invasive in the US, and recorded in 1 of Nevada’s 17 counties. Nevada lists Asian Mustard under “Category B.”
Invasive in the US, and recorded in no Nevada county. Nevada lists Austrian Yellowcress under “Category A.”
Invasive in the US, and recorded in 1 of Nevada’s 17 counties. Nevada lists Barbed Goatgrass under “Category A.”
Invasive in the US, and recorded in 2 of Nevada’s 17 counties. Nevada lists Black Henbane under “Category B.”
Invasive in the US, and recorded in 6 of Nevada’s 17 counties. Nevada lists Broadleaved Pepperweed under “Category C.”
Invasive in the US, and recorded in no Nevada county. Nevada lists Buffelgrass under “Category A.”
Invasive in the US, and recorded in 2 of Nevada’s 17 counties. Nevada lists Butter and Eggs under “Category A.”
Invasive in the US, and recorded in 1 of Nevada’s 17 counties. Nevada lists Camelthorn under “Category A.”
Invasive in the US, and recorded in 3 of Nevada’s 17 counties. Nevada lists Canada Thistle under “Category C.”
Recorded in no Nevada county. Nevada lists Carolina Horsenettle under “Category B.”
Invasive in the US, and recorded in no Nevada county. Nevada lists Common Crupina under “Category A.”
Invasive in the US, and recorded in 1 of Nevada’s 17 counties. Nevada lists Common St. Johnswort under “Category A.”
Invasive in the US, and recorded in 3 of Nevada’s 17 counties. Nevada lists Curly Pondweed under “Category A.”
Invasive in the US, and recorded in 1 of Nevada’s 17 counties. Nevada lists Dalmatian Toadflax under “Category B.”
Invasive in the US, and recorded in 5 of Nevada’s 17 counties. Nevada lists Diffuse Knapweed under “Category B.”
Invasive in the US, and recorded in 2 of Nevada’s 17 counties. Nevada lists Dyer's Woad under “Category A.”
Invasive in the US, and recorded in no Nevada county. Nevada lists Eurasian Watermilfoil under “Category A.”
Recorded in no Nevada county. Nevada lists European Wand Loosestrife under “Category A.”
Invasive in the US, and recorded in 4 of Nevada’s 17 counties. Nevada lists Field Sowthistle under “Category B.”
Invasive in the US, and recorded in no Nevada county. Nevada lists Flowering Rush under “Category A.”
Invasive in the US, and recorded in no Nevada county. Nevada lists Fountain Grass under “Category A.”
Invasive in the US, and recorded in 1 of Nevada’s 17 counties. Nevada lists Giant Reed under “Category B.”
Invasive in the US, and recorded in 1 of Nevada’s 17 counties. Nevada lists Gypsyflower under “Category A.”
Invasive in the US, and recorded in 10 of Nevada’s 17 counties. Nevada lists Hardheads under “Category C.”
Invasive in the US, and recorded in 2 of Nevada’s 17 counties. Nevada lists Harmal Peganum under “Category A.”
Recorded in no Nevada county. Nevada lists Iberian Knapweed under “Category A.”
Invasive in the US, and recorded in 6 of Nevada’s 17 counties. Nevada lists Johnsongrass under “Category C.”
Invasive in the US, and recorded in 2 of Nevada’s 17 counties. Nevada lists Jointed Goatgrass under “Category A.”
Invasive in the US, and recorded in no Nevada county. Nevada lists Kariba-Weed under “Category A.”
Invasive in the US, and recorded in 3 of Nevada’s 17 counties. Nevada lists Leafy Spurge under “Category B.”
Invasive in the US, and recorded in 2 of Nevada’s 17 counties. Nevada lists Maltese Star-Thistle under “Category A.”
Invasive in the US, and recorded in no Nevada county. Nevada lists Mediterranean Sage under “Category A.”
Invasive in the US, and recorded in 1 of Nevada’s 17 counties. Nevada lists Medusahead under “Category B.”
Invasive in the US, and recorded in 7 of Nevada’s 17 counties. Nevada lists Nodding Plumeless Thistle under “Category C.”
Invasive in the US, and recorded in no Nevada county. Nevada lists North Africa Grass under “Category A.”
Invasive in the US, and recorded in 9 of Nevada’s 17 counties. Nevada lists Poison Hemlock under “Category C.”
Invasive in the US, and recorded in no Nevada county. Nevada lists Professor-Weed under “Category A.”
Invasive in the US, and recorded in 14 of Nevada’s 17 counties. Nevada lists Puncturevine under “Category C.”
Invasive in the US, and recorded in 1 of Nevada’s 17 counties. Nevada lists Purple Loosestrife under “Category A.”
Invasive in the US, and recorded in no Nevada county. Nevada lists Red Star-Thistle under “Category A.”
Invasive in the US, and recorded in no Nevada county. Nevada lists Rush Skeletonweed under “Category A.”
Invasive in the US, and recorded in 3 of Nevada’s 17 counties. Nevada lists Scotch Cottonthistle under “Category C.”
Recorded in 2 of Nevada’s 17 counties. Nevada lists Silverleaf Nightshade under “Category B.”
Invasive in the US, and recorded in 5 of Nevada’s 17 counties. Nevada lists Spotted Knapweed under “Category B.”
Recorded in 6 of Nevada’s 17 counties. Nevada lists Spotted Water Hemlock under “Category C.”
Recorded in 1 of Nevada’s 17 counties. Nevada lists Squarrose Knapweed under “Category A.”
Invasive in the US, and recorded in 6 of Nevada’s 17 counties. Nevada lists Stinking Chamomile under “Category B.”
Invasive in the US, and recorded in 1 of Nevada’s 17 counties. Nevada lists Sulphur Cinquefoil under “Category A.”
Invasive in the US, and recorded in 1 of Nevada’s 17 counties. Nevada lists Syrian Beancaper under “Category A.”
Invasive in the US, and recorded in no Nevada county. Nevada lists Waterthyme under “Category A.”
Invasive in the US, and recorded in 12 of Nevada’s 17 counties. Nevada lists Whitetop under “Category C.”
Invasive in the US, and recorded in 6 of Nevada’s 17 counties. Nevada lists Yellow Star-Thistle under “Category A.”
No plant on Nevada’s list matches that.
3 of these plants are native to part of the United States, marked US native above. Nativity is regional. Black locust is native to the Appalachians and regulated in New England; Palmer amaranth is native to the Southwest and listed as an agricultural weed in the Corn Belt. A listing tells you what Nevada regulates, not where a plant belongs. The county checker answers the second question.
Want to check a plant by photo or county?
Use our “Is it native” tool for free.Compiled from the rule itself, retrieved July 20, 2026. Law changes; if you spot a listing we have wrong or stale, tell us at support@getezina.com.
| Plant | Scientific name | Status | Plant instead |
|---|---|---|---|
| Alkali Swainsonpea | Sphaerophysa salsula | ListedNevada says “Category A” | — |
| Asian Mustard | Brassica tournefortii | ListedInvasiveNevada says “Category B” | — |
| Austrian Yellowcress | Rorippa austriaca | ListedInvasiveNevada says “Category A” | — |
| Barbed Goatgrass | Aegilops triuncialis | ListedInvasiveNevada says “Category A” | — |
| Black Henbane | Hyoscyamus niger | ListedInvasiveNevada says “Category B” | — |
| Broadleaved Pepperweed | Lepidium latifolium | ListedInvasiveNevada says “Category C” | — |
| Buffelgrass | Pennisetum ciliare | ListedInvasiveNevada says “Category A” | — |
| Butter and Eggs | Linaria vulgaris | ListedInvasiveNevada says “Category A” | — |
| Camelthorn | Alhagi maurorum | ListedInvasiveNevada says “Category A” | — |
| Canada Thistle | Cirsium arvense | ListedInvasiveNevada says “Category C” | — |
| Carolina Horsenettle US native | Solanum carolinense | ListedNevada says “Category B” | — |
| Common Crupina | Crupina vulgaris | ListedInvasiveNevada says “Category A” | — |
| Common St. Johnswort | Hypericum perforatum | ListedInvasiveNevada says “Category A” | — |
| Curly Pondweed | Potamogeton crispus | ListedInvasiveNevada says “Category A” | — |
| Dalmatian Toadflax | Linaria dalmatica | ListedInvasiveNevada says “Category B” | — |
| Diffuse Knapweed | Centaurea diffusa | ListedInvasiveNevada says “Category B” | — |
| Dyer's Woad | Isatis tinctoria | ListedInvasiveNevada says “Category A” | — |
| Eurasian Watermilfoil | Myriophyllum spicatum | ListedInvasiveNevada says “Category A” | — |
| European Wand Loosestrife | Lythrum virgatum | ListedNevada says “Category A” | Canada Goldenrod, Cutleaf Waterparsnip, Common Cowparsnip |
| Field Sowthistle | Sonchus arvensis | ListedInvasiveNevada says “Category B” | — |
| Flowering Rush | Butomus umbellatus | ListedInvasiveNevada says “Category A” | — |
| Fountain Grass | Pennisetum setaceum | ListedInvasiveNevada says “Category A” | — |
| Giant Reed | Arundo donax | ListedInvasiveNevada says “Category B” | — |
| Gypsyflower | Cynoglossum officinale | ListedInvasiveNevada says “Category A” | — |
| Hardheads | Acroptilon repens | ListedInvasiveNevada says “Category C” | — |
| Harmal Peganum | Peganum harmala | ListedInvasiveNevada says “Category A” | — |
| Iberian Knapweed | Centaurea iberica | ListedNevada says “Category A” | — |
| Johnsongrass | Sorghum halepense | ListedInvasiveNevada says “Category C” | — |
| Jointed Goatgrass | Aegilops cylindrica | ListedInvasiveNevada says “Category A” | — |
| Kariba-Weed | Salvinia molesta | ListedInvasiveNevada says “Category A” | — |
| Leafy Spurge | Euphorbia esula | ListedInvasiveNevada says “Category B” | — |
| Maltese Star-Thistle | Centaurea melitensis | ListedInvasiveNevada says “Category A” | — |
| Mediterranean Sage | Salvia aethiopis | ListedInvasiveNevada says “Category A” | — |
| Medusahead | Taeniatherum caput-medusae | ListedInvasiveNevada says “Category B” | — |
| Nodding Plumeless Thistle | Carduus nutans | ListedInvasiveNevada says “Category C” | — |
| North Africa Grass | Ventenata dubia | ListedInvasiveNevada says “Category A” | — |
| Poison Hemlock | Conium maculatum | ListedInvasiveNevada says “Category C” | — |
| Professor-Weed | Galega officinalis | ListedInvasiveNevada says “Category A” | — |
| Puncturevine | Tribulus terrestris | ListedInvasiveNevada says “Category C” | — |
| Purple Loosestrife | Lythrum salicaria | ListedInvasiveNevada says “Category A” | Canada Goldenrod, Cutleaf Waterparsnip, Common Cowparsnip |
| Red Star-Thistle | Centaurea calcitrapa | ListedInvasiveNevada says “Category A” | — |
| Rush Skeletonweed | Chondrilla juncea | ListedInvasiveNevada says “Category A” | — |
| Scotch Cottonthistle | Onopordum acanthium | ListedInvasiveNevada says “Category C” | — |
| Silverleaf Nightshade US native | Solanum elaeagnifolium | ListedNevada says “Category B” | — |
| Spotted Knapweed | Centaurea stoebe subsp. micranthos | ListedInvasiveNevada says “Category B” | — |
| Spotted Water Hemlock US native | Cicuta maculata | ListedNevada says “Category C” | — |
| Squarrose Knapweed | Centaurea virgata | ListedNevada says “Category A” | — |
| Stinking Chamomile | Anthemis cotula | ListedInvasiveNevada says “Category B” | — |
| Sulphur Cinquefoil | Potentilla recta | ListedInvasiveNevada says “Category A” | — |
| Syrian Beancaper | Zygophyllum fabago | ListedInvasiveNevada says “Category A” | — |
| Waterthyme | Hydrilla verticillata | ListedInvasiveNevada says “Category A” | — |
| Whitetop | Cardaria draba | ListedInvasiveNevada says “Category C” | — |
| Yellow Star-Thistle | Centaurea solstitialis | ListedInvasiveNevada says “Category A” | — |
Where this comes from
Plants that two or more states bordering Nevada regulate, and Nevada does not. A listing is a legal act rather than an ecological one, so a plant can be a documented problem here and still be sold here.
Not under that name. Nevada's legal list is a noxious-weed list: 53 plants named under NAC 555.010, an agricultural noxious-weed law, which governs control and spread on farmland and rights of way rather than what a nursery may sell. GRIIS, the Global Register of Introduced and Invasive Species, flags 46 of these 53 as invasive in the lower 48 states. That is an ecological finding, not a ruling by Nevada. This page shows both side by side.
Nevada's list is an agricultural noxious-weed law, which governs control and spread on farmland and rights of way rather than what a nursery may sell. 53 plants are named under NAC 555.010. A noxious-weed listing does not automatically ban nursery sale, so check the rule itself before assuming a plant cannot be bought or sold.
Search the table on this page for Nevada's legal determination, then look for the Invasive chip beside it, which is a separate ecological finding from GRIIS rather than a ruling by Nevada. A plant can carry one, both, or neither. For an address-level answer, enter the plant's name in Ezina's checker to get its Nevada status alongside whether USDA records it as native to your specific county. Every answer links the record it came from.
Not necessarily, and the distinction matters. Nevada's list is an agricultural noxious-weed law: it obliges landowners to control these plants and restricts moving them, rather than making the act of planting one an offence in itself. NAC 555.010 is the text that says what is actually required of you, and it is linked beside every plant here.
No. This page reproduces what Nevada regulates, and a state list is a legal instrument rather than an ecological verdict. Plenty of plants spread aggressively without ever being listed, and states add species years after the problem is documented.
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Snap a photo or type the name. Ezina matches it to a library of about 40,000 species and starts a care plan tailored to your zone, the local weather, and the time of year.
A schedule built from local rain, temperature, and sun, not a fixed weekly cadence. You get a single notification when a plant actually needs water. Easily add treatments for diseases and pests.
Our garden planner Dig helps you understand what works best for your location and makes suggestions based off your long term goals.
Snap a photo or type the name. Ezina matches it to a library of about 40,000 species and starts a care plan tailored to your zone, the local weather, and the time of year.
A schedule built from local rain, temperature, and sun, not a fixed weekly cadence. You get a single notification when a plant actually needs water. Easily add treatments for diseases and pests.
Our garden planner Dig helps you understand what works best for your location and makes suggestions based off your long term goals.
Compiled from peer-reviewed research, USDA documentation,
and direct scientific observation across the United States.
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