When to Plant Petunia in Nevada

Growing Petunia in Nevada: Complete Guide

Petunia (Petunia × hybrida) is a warm-season crop that needs a head start indoors before Nevada's last frost. Most Nevada 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 Nevada stretches across 11 USDA hardiness zones (5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b, 10a), 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 75 days to maturity, Petunia needs the indoor head start that Nevada's growing season requires. Starting indoors ensures you have strong transplants ready the moment outdoor conditions are right.

Petunia requires full sun (6-8 hours) and moderate (1 inch/week) moisture. In the arid Southwest, intense sun and low humidity mean irrigation is essential; mulch to prevent rapid soil moisture loss.

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 Nevada.