The growing radicchio quick reference guide below is designed as a quick overview of growing radicchio. For more details on the different stages from seed to harvest go to the related pages link.
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Veggie Garden Dairy | |
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Vegetable | Radicchio |
Also Known As | Italian chicory, Red chicory |
Botanical | Family: Asteraceae, Genus: Cichorium, Species: C. intybus |
Plant Type | Cool season - perennial - leafy vegetable |
Frost Tolerance | Hardy |
Planting Position | Sunny position but welcomes shade in the hottest part of the season - growing radicchio requires a minimum of 3-4 hours of direct sunlight daily. |
Seed Viability | 5 years |
Germination | 7-10 days at 40-80 F (4-27 C) |
Growing Temp | 50-70 F (10-21 C) |
Seed to Transplant | 4-6 weeks |
Planting Method | Direct sow or Seedling transplants |
When to Plant | Spring and again in mid-summer for fall-winter harvest |
Time to Plant | As soon as 2 - 4 weeks before the average date of the last 32 F (0 C) freeze in the spring in your area but not before soil temperatures are consistently 40 F (4 C) and above. |
Seed Sowing | Direct sowing radicchio seeds - 1/4 inch (6 mm) deep - 1-2 inches (25-50 mm) apart in rows 12-18 inches (30-45 cm) apart |
Plant Spacing | Transplant or thin radicchio seedlings to 12-15 inches (30-38 cm) apart in rows 12-18 inches (30-45 cm) apart |
Soil Conditions | Well drained - Moderate to high organic matter - Low to medium fertility |
Fertilizer | Low fertilizer needs, 2-3 quarts per 100 sq feet (2.2-3.3 liters per 9.3 square meters) preplanting of All-Purpose 5-5-5 Organic Fertilizer
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When to Fertilize | 2 weeks before sowing or transplanting - when transplanting use liquid starter fertilizer - side-dress every 3-4 weeks |
Days to Harvest | 70-90 days - depending on conditions and variety. |
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