Flower profile
Two-leaved senna
Senna roemeriana
Two-leaved senna is a wildflower that USDA PLANTS lists as native in the lower 48 states. In Texas it's most often seen in bloom in April–October.
*iNaturalist research-grade observations, as of October 17, 2026.
On our lists for: Texas
Quick look
Senna roemeriana, the twoleaf senna, is a species of flowering plant in the family Fabaceae, native to the US states of New Mexico and Texas, and to northern Mexico. A perennial of limestone soils and typically 18 in (46 cm) tall, it is toxic to livestock, particularly goats and sheep, but they avoid consuming it with proper range management.
- It belongs to the Fabaceae family. iNaturalist
- USDA PLANTS describes it as an herb (forb) with a perennial life cycle. USDA PLANTS
- USDA PLANTS lists it as native in the lower 48 states and records it in 3 states. USDA PLANTS
- NatureServe lists it as native to Texas. NatureServe
- In Texas, most iNaturalist sightings of it in flower come in April–October. iNaturalist
- iNaturalist has 7,025 research-grade sightings of it in Texas, ranking #93 among the 109 flowers on our Texas list. iNaturalist
Two-leaved senna gift ideas
Handmade two-leaved senna 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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Two-leaved senna art print
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Two-leaved senna greeting card
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Two-leaved senna mug
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Two-leaved senna earrings
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Two-leaved senna embroidery pattern
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Two-leaved senna sticker
When does it bloom?
In Texas, most flowering sightings come in April–October.
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
- Texas
- Not listed Not on Texas endangered and threatened plants (31 Tex. Admin. Code § 69.8), as listed by Texas Parks and Wildlife. NatureServe: SNR, not yet ranked in Texas. 31 TAC 69.8
- Rare elsewhere
- No other U.S. state ranks it S1, S2, SH or SX.
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.
It isn't on the ASPCA plant list.
🌿 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 two-leaved senna in 3 states.
recorded by USDA PLANTS on our state lists not recorded
See the full list of states
New Mexico, Oklahoma, Texas.
Texas counties with USDA records: Andrews, Bell, Bexar, Blanco, Brewster, Brown, Burnet, Comal, Comanche, Coryell, Crane, Crockett, Culberson, Eastland, Edwards, Erath, Gaines, Gillespie, Gonzales, Hardeman, Hays, Hill, Howard, Irion, Jeff Davis, Kendall, Kerr, Kimble, Lampasas, Mason, McLennan, Medina, Menard, Midland, Navarro, Palo Pinto, Pecos, Presidio, Reagan, Real, Reeves, San Saba, Schleicher, Shackelford, Sterling, Sutton, Tarrant, Taylor, Terrell, Throckmorton, Travis, Uvalde, Val Verde, Williamson, Winkler, Wise, Yoakum.
More Texas flowers
Sources
- USDA, NRCS. PLANTS Database, profile SERO8.
- iNaturalist, Senna roemeriana: taxonomy, research-grade observation counts and “Flowering” annotations, retrieved October 17, 2026.
- Wikipedia, Senna roemeriana (lead quoted under CC BY-SA 4.0).
- Texas: Texas endangered and threatened plants (31 Tex. Admin. Code § 69.8), as listed by Texas Parks and Wildlife.
- Texas: Texas noxious and invasive plant list (4 Tex. Admin. Code § 19.300(a)).
- USFWS, ECOS species database (ESA listing check), October 17, 2026.
- NatureServe Explorer, Senna roemeriana (global and state ranks).
- Edibility and toxicity: no source found (marked "not well documented").
- Photo: Michelle W. （鍾偉瑋） via iNaturalist · CC BY 4.0 · resized.