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key growing information
Celtuce | Key Growing Information
How to grow celtuce (stem lettuce) from seed: starting transplants or sowing direct, temperature for germination, spacing, slug control, and harvesting and preparing the stems.
By Hensley’s Seed Co.
Celtuce - Key Growing Information
SCIENTIFIC NAME:
Lactuca sativa var. asparagina
CULTURE:
Grow celtuce much as you would head lettuce. Start seed 3–4 weeks before planting out, in flats or cell-type containers , 1/8" deep and about 1/4" apart, sowing again every 2–3 weeks for a steady supply. On warm, sunny days, shade the flats if needed so the soil surface stays below 75°F (24°C) until seedlings emerge. If you started in open flats, prick seedlings out about 2 weeks later, 1–2" apart in flats or into pots or 3/4–1" cells. Harden them off for 2–4 days by cutting back water and temperature before planting out. Plants tolerate light frost; set them 8–12" apart in rows 12–18" apart. To sow outdoors, begin in spring once the bed is ready. Seed sprouts even in cold soil around 40°F (4°C) but poorly above 75°F (24°C). Space seeds about 1" apart in rows 12–18" apart, or drop 3–4 seeds every 8". Cover about 1/8" deep, firm gently, and keep the surface moist until seedlings appear in 3–5 days (longer in cold weather). Thin to 8".
DISEASES AND PESTS:
For slug control products, see our range of insecticides . Rotation and good sanitation prevent most disease.
HARVEST:
Harvest when the thickened stem is 8–10" long. For market, strip off all but the small tuft of leaves at the top. Before eating, peel or trim away the outer skin to reach the tender core, then stir-fry, broil or slice it raw into salads.
AVG. PRECISION SEEDING RATE:
About 1,000 seeds per 220'; 1 oz. per 5,300'.
TRANSPLANTS:
Averages about 20,000 plants.
SEED SPECS:
About 25,250 seeds per oz.
PACKET:
500 seeds per packet.
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