When to Plant Radicchio in Oregon

Growing Radicchio in Oregon: Complete Guide

Radicchio (Cichorium intybus) is a warm-season crop that needs a head start indoors before Oregon's last frost. Most Oregon gardeners begin seeds indoors around Sunday, February 15, 2026 and move transplants outside around Sunday, March 1, 2026, after the risk of frost has passed.

Because Oregon stretches across 9 USDA hardiness zones (5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b), 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 80 days to maturity, Radicchio needs the indoor head start that Oregon's growing season requires. Starting indoors ensures you have strong transplants ready the moment outdoor conditions are right.

Radicchio requires full sun to partial shade and regular (keep moist) moisture. The Pacific Northwest's cool, wet springs delay soil warm-up; raised beds and black plastic mulch help jump-start the season.

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 Oregon.