When to Plant Valerian in Ohio

Growing Valerian in Ohio: Complete Guide

Valerian (Valeriana officinalis) is a warm-season crop that needs a head start indoors before Ohio's last frost. Most Ohio gardeners begin seeds indoors around Friday, February 13, 2026 and move transplants outside around Friday, April 24, 2026, after the risk of frost has passed.

Because Ohio stretches across 4 USDA hardiness zones (5b, 6a, 6b, 7a), 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 365 days to maturity, Valerian needs the indoor head start that Ohio's growing season requires. Starting indoors ensures you have strong transplants ready the moment outdoor conditions are right.

Valerian requires full sun to partial shade and regular (1-2 inches/week) moisture. Midwest growing seasons are compressed between late spring frosts and fall cold snaps, so timing transplants precisely pays off.

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 Ohio.