
Flower profile
Alkali heliotrope
Heliotropium curassavicum
Alkali heliotrope is a wildflower that USDA PLANTS lists as native in the lower 48 states. It's on our flower lists for 3 states, and across the U.S. it's most often seen in bloom in March–October.
*iNaturalist research-grade observations, as of October 17, 2026.
On our lists for: California, Hawaii, Nevada
Quick look
Heliotropium curassavicum, commonly called salt heliotrope, is a species of flowering plant in the family Heliotropiaceae. It is native to the Americas and Northern Australia and has been introduced elsewhere.
- It belongs to the Boraginaceae family. iNaturalist
- USDA PLANTS describes it as an herb (forb) / a subshrub with a annual, perennial life cycle. USDA PLANTS
- USDA PLANTS lists it as native in the lower 48 states and records it in 35 states. USDA PLANTS
- NatureServe lists it as native to California, Nevada and Hawaii. NatureServe
- In California, most iNaturalist sightings of it in flower come in April–October. iNaturalist
- In Nevada, most iNaturalist sightings of it in flower come in March–November. iNaturalist
- USDA PLANTS lists its flower color as white. USDA PLANTS
- USDA PLANTS gives its bloom period as mid spring. USDA PLANTS
- USDA PLANTS lists a mature height of about 1.2 ft. USDA PLANTS
- iNaturalist has 12,737 research-grade sightings of it in California, ranking #62 among the 110 flowers on our California list. iNaturalist
- iNaturalist has 820 research-grade sightings of it in Nevada, ranking #39 among the 110 flowers on our Nevada list. iNaturalist
- iNaturalist has 736 research-grade sightings of it in Hawaii, ranking #63 among the 105 flowers on our Hawaii list. iNaturalist
Alkali heliotrope gift ideas
Handmade alkali heliotrope gifts from independent makers.
🌱 Sample spot. Handmade gift picks from independent shops will appear here once our shop partnership is approved. These cards are placeholders, not real products.
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Alkali heliotrope art print
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Alkali heliotrope greeting card
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Alkali heliotrope mug
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Alkali heliotrope earrings
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Alkali heliotrope embroidery pattern
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Alkali heliotrope sticker
When does it bloom?
Bloom time in each of our 3 states
| State | Type | Peak bloom | Sightings* |
|---|---|---|---|
| California | Native | April–October | 12,737 |
| Nevada | Native | March–November | 820 |
| Hawaii | Native | January–December | 736 |
Conservation status
- Federal (U.S. ESA)
- Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
- NatureServe global
- G5 Secure worldwide. NatureServe
- California
- Not listed Not on California state-listed endangered, threatened and rare plants (14 CCR § 670.2), per CDFW's CNDDB list (July 2026). NatureServe: SNR, not yet ranked in California. CNDDB listed plants (July 2026)
- Nevada
- Not listed Not on Nevada fully protected plants, critically endangered (NAC 527.010). NatureServe: S5, secure in Nevada. NAC 527.010
- Hawaii
- Not listed Not on Hawaii threatened and endangered plants (HAR 13-107; the state list follows the federal list), DLNR Division of Forestry and Wildlife. NatureServe: SNR, not yet ranked in Hawaii. HAR 13-107
- Rare elsewhere
- Other states where NatureServe ranks it rare or missing: NC (SH), OR (S2), VA (S1), WY (S2). (S1 critically imperiled, S2 imperiled, SH possibly extirpated, SX presumed extirpated.)
Checked October 17, 2026. Rankings and lists can change, so follow the links for the latest.
Can you eat it?
None of the sources we checked (NC State Extension (no page for this plant), USDA PLANTS) say whether it's edible or poisonous for people.
ASPCA's entry “Heliotrope” (Heliotropium spp), which covers the whole genus, lists it as toxic to horses. Signs include: Horses: liver disease (must be ingested in large amount or over a long time period) Credit: Photo by G.A. Cooper, courtesy of Smithsonian… ASPCA
🌿 Never eat a wild plant unless you're certain of its ID; this isn't medical advice. Worried about a person? Call Poison Control at 1-800-222-1222. Worried about a pet? Call your vet.
Where does it grow?
USDA PLANTS records alkali heliotrope in 35 states.
recorded by USDA PLANTS on our state lists not recorded
See the full list of states
Alabama, Arizona, Arkansas, California, Colorado, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Kansas, Louisiana, Maine, Maryland, Mississippi, Missouri, Montana, Nebraska, Nevada, New Jersey, New Mexico, New York, North Carolina, North Dakota, Oklahoma, Oregon, Pennsylvania, South Carolina, South Dakota, Texas, Utah, Virginia, Washington, Wyoming.
California counties with USDA records: Alameda, Butte, Calaveras, Colusa, Contra Costa, Fresno, Glenn, Humboldt, Imperial, Inyo, Kern, Lake, Lassen, Los Angeles, Madera, Marin, Mendocino, Merced, Modoc, Mono, Monterey, Napa, Orange, Placer, Plumas, Riverside, Sacramento, San Benito, San Bernardino, San Diego, San Francisco, San Joaquin, San Luis Obispo, San Mateo, Santa Barbara, Santa Clara, Siskiyou, Solano, Sonoma, Stanislaus, Sutter, Tulare, Ventura, Yolo.
Nevada counties with USDA records: Carson City, Churchill, Clark, Douglas, Eureka, Humboldt, Lander, Lincoln, Lyon, Mineral, Nye, Pershing, Washoe.
Hawaii counties with USDA records: Hawaii, Honolulu, Kauai, Maui.
More California flowers
Sources
- USDA, NRCS. PLANTS Database, profile HECU3.
- iNaturalist, Heliotropium curassavicum: taxonomy, research-grade observation counts and “Flowering” annotations, retrieved October 17, 2026.
- Wikipedia, Heliotropium curassavicum (lead quoted under CC BY-SA 4.0).
- California: California state-listed endangered, threatened and rare plants (14 CCR § 670.2), per CDFW's CNDDB list (July 2026).
- California: California noxious weed species (3 CCR § 4500).
- Nevada: Nevada fully protected plants, critically endangered (NAC 527.010).
- Nevada: Nevada noxious weeds (NAC 555.010).
- Hawaii: Hawaii threatened and endangered plants (HAR 13-107; the state list follows the federal list), DLNR Division of Forestry and Wildlife.
- Hawaii: Hawaii noxious weed list (HAR 4-68).
- USFWS, ECOS species database (ESA listing check), October 17, 2026.
- NatureServe Explorer, Heliotropium curassavicum (global and state ranks).
- Edibility and toxicity: ASPCA.
- Photo: Liren Varghese via iNaturalist · CC BY 4.0 · resized.


