When to Plant Rosemary in Louisiana

Growing Rosemary in Louisiana: Complete Guide

Rosemary (Salvia rosmarinus) is a warm-season crop that needs a head start indoors before Louisiana's last frost. Depending on your zone, Louisiana gardeners start seeds indoors between November 16, 2026 (Zone 10a) and January 4, 2027 (Zone 8b), then move transplants outside once their zone's last frost has passed — the zone table above has your exact dates.

Because Louisiana stretches across 4 USDA hardiness zones (8b, 9a, 9b, 10a), planting windows can shift by as much as two to four 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 Louisiana'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 Louisiana.