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Vulcan

Home / Vegetables / Lettuce
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Vulcan

$140.25 Original price was: $140.25.$97.99Current price is: $97.99.

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SKU: AM9OB 1700021405 Categories: Lettuce, Vegetables Tags: Johnny's Selected Seeds, Lettuce
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Early, brilliantly colored red leaves. Organic seed with NOP-compliant pelleting.

Combines earliness, color, size, and flavor. Crisp and mild. Ruffled, slightly-frilled leaves are a vivid, candy-apple red over a light green background. Slow to tipburn. MT0-30. USDA Certified Organic.

Specs:

  • Packet: 250 seeds
  • Avg. 17,500 seeds/lb

Size

Packet, 1,000 Seeds, 5,000 Seeds, 25,000 Seeds, 50,000 Seeds, 100,000 Seeds, 500,000 Seeds

SCIENTIFIC NAME

Lactuca sativa

CULTURE

Lettuce is a hardy, cool-weather crop and can be planted with your earliest worked soil. It grows best at 60โ€“65ยฐF (16โ€“18ยฐC) and germinates best below 70ยฐF (21ยฐC), so careful variety selection is key for success in hotter weather. Sow every 2โ€“3 weeks for a continuous supply of either full heads or salad mix.

PELLETED SEED

Pelleted seed requires a little extra attention when it comes to watering, as it performs best with consistent, moderate soil moisture throughout the germination period. An initial watering will split or dissolve the pellet, but if the soil is allowed to dry out before the germination period is over, the seed may receive insufficient moisture for optimal germination.

PELLET STORAGE

Pelleting offers many advantages, but the pelleting process also shortens the shelf life of the seed. We recommend using pelleted seed within one year of purchase. If you need to store pelleted seeds until planting, protect them from heat and humidity in a cool, dark, dry place. If you prefer to store your seed in the refrigerator, be sure to place the seed in an air-tight container to protect it from fluctuations in humidity.

THERMAL DORMANCY

Lettuce seed can enter thermal dormancy when exposed to high temperatures. Optimum germination results at soil temperatures of 60โ€“68ยฐF (15.5โ€“20ยฐC). The priming process in pelleted lettuce seeds broadens the temperature range in which the seeds will germinate, overcoming some of their thermal dormancy.

TRANSPLANTING for HEAD LETTUCE

3โ€“4 weeks before field planting, sow in 128-cell trays barely covered with vermiculite or fine soil. If necessary, utilize shade and frequent misting to keep trays cooled below 75ยฐF (25ยฐC) during germination. Young plants properly hardened at least 3โ€“5 days before planting can survive temperatures as low as 20ยฐF (-6ยฐC). Transplant iceberg, romaine, and butterhead lettuce 10โ€“12" apart in rows 15โ€“18" apart, other types 8โ€“10" apart in rows 12โ€“18", and mini heads as close as 6" in a grid.

DIRECT SEEDING for BABY LEAF

Seeds can germinate well in soils as low as 40ยฐF (4ยฐC) but often poorly above 75ยฐF (24ยฐC). Sow 4โ€“6 seeds/inch in rows at least 2" apart. Cover lightly to 1/8" and firm gently. Dry soil must be watered to ensure coolness and moisture for uniform germination.

HARVEST

Head Lettuce: Cut at base, keeping wrapper leaves for handling loss. Consider cutting alternating plants to extend harvest window, allowing remaining plants to continue to grow. Pack heads in layers facing cut ends away. Wash off sap and cool immediately to prevent staining and dehydration. Baby Leaf: Harvest about 1" above the growing point when leaves reach desired harvestable length, about 3โ€“4" long. Remove harvest debris to improve regrowth quality.

STORAGE

Keep cold at 35โ€“40ยฐF (1โ€“4ยฐC) with high humidity but free of standing water. Head Lettuce: Keep 14โ€“20 days, less for delicate types like butterhead and oakleaf, and longer for lettuce grown slowly in cooler temperatures. For one-cut types, extend season in cold weather by holding cut heads in cooler up to two weeks to process into salad mix.

MT0-30 SEEDS

A variety's description followed by "MT0-30" indicates that the seed offered for sale has been tested for the presence of Lettuce Mosaic Virus and that no LMV was found in a sample of at least 30,000 seeds.

DAYS TO MATURITY

Head Lettuce: from transplant; Baby Leaf: from direct seeding.

AVG. DIRECT SEEDING RATE

For baby leaf: 1,000 seeds/16', 1 oz./400', 1 lb./6,400' at 60 seeds/ft.

TRANSPLANTS

Avg. 16,000 plants/oz.

SEED SPECS

SEEDS/OZ: Avg. 17,800.

PACKET

500 seeds, unless otherwise indicated.

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    • Vegetables
      • Microgreens
      • Peppers
      • Lettuce
      • Tomatoes
      • Onions
      • Squash
      • Greens
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      • Beans
      • Carrots
      • Radishes
      • Cucumbers
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      • Broccoli
    • Flowers
      • Snapdragon
      • Tulips
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      • Stock
      • Celosia
      • Cosmos
      • Aster
      • Sweet Peas
      • Flower Collections and Mixes
      • Dianthus (Sweet William)
      • Lisianthus
      • Strawflower
      • Scabiosa (Pincushion Flower)
      • Gomphrena (Globe Amaranth)
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      • Culinary Herbs
      • Basil
      • Chamomile
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