EPA Level I Region
Southern Semi-Arid Highlands
Southern Semi-Arid Highlands reaches into the United States only in southeastern Arizona, the sky-island country around Sierra Vista and the Huachuca and Chiricahua mountains. Grassland and oak woodland climb the slopes between desert basins, fed by a strong summer monsoon. Natives such as sacaton, desert willow, and Arizona rosewood match that pattern, and this corner of the state is one of the richest places for pollinators in North America.
Ecoregions inside it: 1. Native range is set at that finer level, so start there rather than here.
Ecoregions with plant lists
Pick the one that covers your yard. Each has its own plant list, conditions, and maintenance notes.
- Madrean ArchipelagoEPA Level III 79
Not sure which one covers your yard?
Pollinator Patch resolves your ZIP to its ecoregion and builds a front-yard plan tuned to the soil, climate, and HOA expectations where you actually live.