- USDA hardiness zones:
- -
- Days to maturity:
- 100 - 150
Striking 6- to 8-foot plants with long, toothed, silver-gray leaves on spineless stems. Harvest young leaf ribs and use like celery.
Cardoon is very large growing 4 feet (120 cm) and 2 feet (60 cm) wide, with a large flower similar to that of an artichoke.
Sow cardoon seeds ¼ inch (6 mm) deep and as far apart indoors or directly out doors 3 "4 weeks after danger of frost has passed. Seeds prefer warm soil to germinate" so use bottom heat if possible - above 70 F (20 C). In colder climates pot up transplants and keep at around 65 F (18 C) and no more than 10 degrees colder at night until day time temps reach close to 60 F (15 C). Plant in full sun or light shade in soil high in organic matter. Supplement bed soil with compost. Stalks are ready to harvest 120 to 150 days after planting.
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