Field ManualAll plants

Tepame
Vachellia pennatula (Schltdl. & Cham.) Seigler & Ebinger
Family: Fabaceae
Pet & Human Safety
People: Hazard to peoplePets: Not on the ASPCA lists as we read them
ASPCA index has no Vachellia pennatula or Acacia pennatula page. The Arizona arboretum record lists toxicity "Benign" and allergen "Non-allergenic"; that is a campus-record field, not a pet-safety finding. Do not treat as pet-safe.
PlotAndPetal cannot tell you whether a plant you found can be eaten. Only someone who can see the plant can identify it.
Poison control
If someone has collapsed, cannot be woken, is having a seizure or has trouble breathing, call 911 now. For any other possible poisoning, call Poison Help: 1-800-222-1222.
Emergency number source: U.S. federal law (47 U.S.C. § 251(e)(3)), read 2026-10-07.
Naturalist Lore
Historical Background & Breeding Lore
The history of this plant and its name, and how it was bred, where we have them.
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- Hardiness zones
Not checked yet
- Light
direct sun (Celaya planting table).
- Water needs
low (Arizona arboretum water-use field "Low water use"; IDEFOR: tolerates drought); Celaya municipal planting schedule (a weak source for plant needs): water every third day while establishing, then weekly. The level is a plain-language reading of the source wording cited. Always finger-test two inches down.
- Mature size
MX: IDEFOR: 3 to 12 m (about 10 to 39 ft) tall, sometimes a 25 cm trunk; US: Arizona arboretum: 20 to 50 ft tall, 16 to 20 ft wide; MX Celaya table: Celaya planting table: 1.0 m to 3.0 m tall, crown 3.0 to 5.0 m
How to prepare the soil, when and what to feed, and how and when to prune where that applies.
Get the app: coming soonAnatomy & Guilds
Botanical Anatomy & Characteristics
How the flowers and leaves are built and which pollinators visit, where we have them.
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Field Doctor
What can go wrong with this plant and what to do about it, where we have them.
Get the app: coming soonVintage Plates
Vintage Plates
Old botanical drawings from public libraries are in the app, for plants where we have them.
Get the app: coming soonSources
- CONAFOR IDEFOR - species sheet: Vachellia pennatula (tepame, huizache)
- University of Arizona Campus Arboretum - Acacia pennatula (feather acacia)
- Municipio de Celaya, Guanajuato - Paleta vegetal, Catalogo de especies nativas (2025), species planting pages
- Kew POWO/WCVP - accepted-name record
- ASPCA Toxic and Non-Toxic Plants list