County FIPS 48453 · Verified Federal Agronomic Profile
Travis County, Texas — Growing, Soil & Horticulture Atlas
USDA Plant Hardiness
Zone 9a
Source: PRISM / USDA ARS (2026-11-01)
NOAA 50% Frost Window
Mar 04 → Nov 24
265 avg growing days (NOAA NCEI)
NRCS SSURGO Soil Profile
Calcareous Clay Loam
Tarrant / Brackett Clay Loam · pH 7.4 – 8.2
USDA APHIS & Drought
Imported Fire Ant (Federal Domestic Quarantine)
D1 Moderate Drought
USDA PLANTS Native Matches (TX)
Verified Local Entities in Travis County
Extension Office: Texas A&M AgriLife Extension — Travis County
Bluebonnet Nursery & Landscape LLCNursery & Landscape Contractor
Native drought-tolerant nursery stock, commercial xeriscape installs & irrigation
Verify Credential (AGA-2026-00104) →Hill Country Canopy & Tree WorksArborist & Tree Care
Oak wilt mitigation, structural pruning & plant health care
Verify Credential (AGA-2026-00118) →Balcones Limestone & Drainage Co.Hardscape & Irrigation
Drip irrigation retrofits, retaining walls & commercial drainage
Verify Credential (AGA-2026-00129) →Lady Bird Johnson Wildflower CenterBotanical Garden & Arboretum
Texas native flora research garden, seed bank & seasonal plant sales
Central Texas Orchid & Bromeliad SocietySingle-Genus Plant Society
Monthly grower clinics, AOS-judged shows & member plant swaps
Upcoming Event: Spring Native Plant Sale & Pollinator Symposium (Apr 10 – Apr 12, 2027) · Lady Bird Johnson Wildflower Center