Radicchio is a cool weather loving plant – so grow it into the fall. Start seeds in containers 5/21-6/21. Sow seeds 1/16" deep. Days to germination: 7-10. Transplant outside 6/21-7/21. Plant spacing: 12". Radicchio are cold hardy to about 20°.
Harvest heads when they are firm when squeezed. Cut head at base using a knife. Some plants will not form tight heads - cut individual leaves or harvest open heads with a knife. Harvest all plants before temperatures reach lower 20s.
Chicory is a difficult seed saving crop. They are cross pollinated by insects and will easily cross with the very common, Wild Chicory plants which will ruin the seed crop. Cichorium intybus are biennial – the plants need to survive the winter (in a hoophouse) in order to flower in year two. Inspect plants and only allow good plants to flower for seed. Isolation: ½ mile or caging.
Our Recommendations with Braci Ardenti Organic Radicchio