How to Grow CELERY
Perhaps the most difficult vegetable to grow in many areas, this long-season crop must be started inside. Seeds are slow to germinate, and if transplanted outside too early, plants will bolt in response to cold. Also requires consistent moisture and dislikes heat.
14 to 21 days, 70F to 75F
Damp, High Fertility
Full Sun, Part Shade
2cm apart (indoors)
6" to 12 " apart
DAYS OF HARVEST
120 to 140
Start plants inside about 10 to 12 weeks before last frost. Plant several seeds per cell. Seeds need light to germinate, so don't cover seed deeply. Keep soil moist and warm (about 70 F to 75 F) until seeds germinate in 2 to 3 weeks. After germination, grow inside in a cool location (about 60 F to 70 F). Thin to one seed per cell.
Plants will withstand light frost, but 10 days with night temperatures below 40 and days below 55 F can cause bolting. So harden plants by reducing water, not lowering temperature.
Set out transplants 6 to 12 inches apart, rows 18 to 36 inches apart, about 2 weeks before average last frost.
Plants are shallow-rooted and require consistent moisture. Lack of water will make stalks fibrous and bitter. Mulch to retain moisture, suppress weeds and avoid disturbing roots when cultivating.
For a milder flavor, blanch by wrapping stalks two weeks before harvest with paper, a cardboard milk carton or other material.
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