Radicchio
Cichorium intybus
Sow outdoors about 12 weeks before your first fall frost. Space plants 8 in (20 cm) apart.
Photo: Goldlocki, CC BY-SA 3.0 · source
When to plant
Timed from your frost dates, so it holds wherever you garden. Give yours and every step below becomes a date.
Optimal Spring Direct Sow
From seed- Sow outdoors3 weeks before your last spring frost
- First harvestabout 80 days after sowing
Optimal Indoor Start
From seed- Start indoors4 weeks before your last spring frost
- Begin hardening off1 week before your last spring frost
- Plant outaround your last spring frost
- First harvestabout 80 days after sowing
Optimal Fall Direct Sow
From seedRecommended- Sow outdoorsabout 12 weeks before your first fall frost
- First harvestabout 60 days after sowing
Growing radicchio
- Spacing in the row
- 8 in (20 cm)
- Between rows
- 15 in (38 cm)
- Planting depth
- 1/8-1/4 inch
- Sun
- Full Sun
- Life cycle
- Perennial
Feeding
- How often
- At planting, then once at midseason. Side-dress nitrogen about 4 weeks after transplanting or thinning, and stop once heads begin to form; too much nitrogen loosens the heads.
Your radicchio, planned to the day.
Canopy turns these timings into dates from your own frost data, places every plant at its spacing on your garden map, and tracks it all the way to harvest.