When to Plant Rosemary in Texas

Growing Rosemary in Texas: Complete Guide

Rosemary (Salvia rosmarinus) is a warm-season crop that needs a head start indoors before Texas's last frost. Most Texas gardeners begin seeds indoors around Tuesday, December 2, 2025 and move transplants outside around Tuesday, February 24, 2026, after the risk of frost has passed.

Because Texas stretches across 9 USDA hardiness zones (6b, 7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b), planting windows can shift by as much as six to eight weeks from one end of the state to the other. Gardeners in the warmer southern zones can start earlier, while those in cooler northern zones should wait until the zone table above shows their last frost has passed.

With 120 days to maturity, Rosemary needs the indoor head start that Texas's growing season requires. Starting indoors ensures you have strong transplants ready the moment outdoor conditions are right.

Rosemary requires full sun (6+ hours) and low (drought tolerant) moisture. Gulf Coast gardeners face intense summer heat and humidity — afternoon shade and consistent irrigation are key to success.

For the most precise planting dates tailored to your exact location, enter your ZIP code on our planting calendar or use the zone table above to find the schedule for your area of Texas.