Heading Chicory
Indigo Radicchio is an F1 hybrid radicchio bred for reliable performance in North American gardens, maturing in just 65 days. This cool-season vegetable from the Asteraceae family grows as a compact bush and delivers excellent uniformity and high yield potential, especially for summer harvests. It's a modern improvement over older radicchio types, offering gardeners a dependable choice for succession plantings that adapt well to varied growing conditions.
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3-10
?in H x ?in W
Biennial, Perennial
Moderate
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This hybrid radicchio was developed specifically to address the unpredictability of older varieties while maintaining the crop's natural hardiness and cool-season vigor. The emphasis on uniformity and yield makes it a practical choice for gardeners who want consistent heads rather than the hit-or-miss results common with traditional radicchio. At 65 days to harvest, it matures quickly enough to fit into most growing seasons, particularly when planted for summer production.
As a radicchio variety, Indigo Radicchio is grown for its edible heads, which are typically used in salads, grilled preparations, and cooked dishes where their characteristic slightly bitter flavor develops and mellows. The compact bush growth habit suggests it's sized for individual or small family harvests rather than large-scale processing.
Sow seeds in flats at 4 seeds per inch, barely covering with fine vermiculite, 3 to 4 weeks before transplanting outdoors. Keep soil temperatures below 75°F (24°C) during germination by shading flats on warm, sunny days if necessary. After germination, transplant seedlings 1 to 2 inches apart into flats, pots, or cell-type containers about 2 weeks later.
Harden seedlings by reducing water and temperature for 2 to 3 days before planting outdoors. Properly hardened transplants can tolerate cooler outdoor conditions and establish more reliably.
Harvest heads at 65 days after transplanting when they have reached mature size and firmness. Cut heads at the base with a sharp knife, leaving the root system in place if multiple harvests from the same plant are desired.
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“Indigo Radicchio represents the modern breeding work focused on improving radicchio for North American conditions. Unlike heirloom radicchio varieties that can be frustratingly inconsistent, this F1 hybrid was specifically developed to offer better uniformity and higher yield potential. The breeding work acknowledges that radicchio, while naturally hardy, still requires thoughtful variety selection and succession planting to perform reliably across different regional climates and seasons.”