Latin Name: Lactuca Sativa
Item #: P173C
88 days. Darker green medium sized iceberg type heads with good texture and taste. Wrapper leaves are long and moderately savoyed.
88 days. Wrapper leaves are long and moderately savoyed. Good texture and taste. Cap leaf provides protection from tip burn.
Pelleted seed. PVP
HEAD LETTUCE (Iceberg Types) fresh market
1/2 lb/0.23 kg per acre; oz./28 g contains about 20,000 seeds.
GREENHOUSE: Sow Extra Early crops in hotbeds or a cool greenhouse, from Feb. 15th. - Mar. 15th. Germinate @ 55°F/ 13°C soil temp (high soil temps of 80°F/27°C will delay germination). 1/4 lb./113 g of sized seed sown thinly @ 2 or 3 seeds per in./25 mm in flats should provide enough transplants for an acre. Press seed lightly into the soil surface and cover lightly with 1/8 - 1/4 in./3 - 6 mm. of fine soil. Some strains are quite light responsive and will germinate poorly if sown too deep. Grow seedlings, cool @ 60°F/16°C day and 40°F/4°C night temps. Transplant 14 days after germination into flats, spacing plants 2 in/5 cm apart - or into 2 1/4 in./6 mm peat pots. Lower growing temps. of transplants to 35 - 40°F/2 - 4°C for 7 days before moving plants into the field. (Remove sash gradually during the day). Properly hardened plants will stand temps. as low as 25°F/-4°C.
TRANSPLANT early plants into the field during Apr.; soak peat pots with a starter solution of 20 - 20 - 20 before transplanting. Space plants. 14 to 18 in./36 - 46 cm apart in rows 16 in./41 cm apart.
OUTDOOR SEEDING: Sow Early crops outdoors Apr. 1st. (seed germinates at low soil temps. of 45 - 55°F/7 - 13°C), 1/4 in./6 mm deep @ 2 seeds per in./25 mm; cover with fine soil and firm. Space in 16 or 18 in./41 - 46 cm. rows, thin to 12 in./31 cm-apart. Heads mature during July and Aug.
LATE CROP: Sow in late June or early July to mature just before frost. If plants are immature when the first frost hits - they will recover. Wrapper leaves of mature heads can be damaged by severe frosts.