Nettuno
Radicchio · Sugarloaf
Open Pollinated
Cichorium intybus
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Asteraceae (Sunflower family) · Genus: Cichorium
Characteristics
Color
Green
Flavor
BitterMildSweet
Growth Form
Head
Texture
Juicy
Trait
Slow-Bolting / Heat Tolerant
About the Plant
Life Cycle
Perennial zone 3+
Annual below
❄
Hardiness
Cool-Season/Hardy
☀
Exposure
Full Sun
💧
Moisture
Evenly Moist
🌍
Origin
Switzerland
🌱
Germination
5–10 days
at 35–85 °F
⏳
Days to Maturity
80–85 days
How to Plant
🏠
Start Indoors
4-6 Weeks Before Last Frost
Transplant
2-4 Weeks Before Last Frost
🌸
Direct Sow (Spring)
2-4 Weeks Before Last Frost
🍂
Direct Sow (Fall)
10-12 Weeks Before First Frost
Planting Depth
1/4 in
Seed Spacing
1–2 in
Row Spacing
18–24 in
Thin To
8–12 in
🌡
Optimal Soil Temp
60–75 °F
🌡
Soil Temp
35–85 °F
🌡
Air Temp
28–75 °F
When to Plant in Your Area
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