Package of Johnny's Selected Seeds
Package of Johnny's Selected Seeds

Black Seeded Simpson Leaf Lettuce

425N

Product ID: 425N

Vegetables > Lettuce


Standard light green baby leaf.

An early producer of light green, curled, tender leaves. Packet: 500 seeds.

Plant Cycle:   (A)   Days to Maturity or Bloom:   28

Heirloom   Salad Mix Component  

Learn more in the 'Symbols Explained' and 'Diseases Resistance' tabs!

In stock

Product Price Quantity
425NPacket  $3.45 
425N1 Ounce  $5.00 
425N1/4 Pound  $7.70 
425N1 Pound  $18.75 
425N5 Pounds  $80.75 
425N10 Pounds  $137.20 
425N25 Pounds  $365.00 


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Black Seeded Simpson Leaf Lettuce


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Black Seeded Simpson Leaf Lettuce




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Quick Lettuce Reference Chart


No disease information found.

Lettuce



CULTURE: Lettuce is hardy and can be planted as early as the soil can be worked. It is a cool weather crop and makes its best growth at temperatures of 60-65°F (16-18°C). Careful variety selection is important for hot weather crops. Sow every 3 weeks for a continuous supply of fresh lettuce.
THERMAL DORMANCY:
Lettuce can be dormant at high temperatures. For best germination results sow at soil temperatures of 68°F (20°C) or lower. The priming process in pelleted lettuce seeds broadens the temperature range in which the seeds will germinate, overcoming some of their thermal dormancy.
TRANSPLANTING:
Sow in flats, 4 seeds/in., or in 3/4" plug trays, barely covering seeds with fine vermiculite, 3-4 weeks before transplanting outdoors. Shade the flats on sunny, warm days if necessary to keep the soil surface cool, below 75°F (24°C), until germination. If sowing into flats, transplant 1-2" apart into flats, pots, or cell-type containers about 2 weeks later. Harden seedlings by reducing water and temperature for 2-3 days before planting outdoors. Properly hardened transplants can survive temperatures as low as 20°F (-6°C). Transplant iceberg and romaine lettuce 10-12" apart, in rows 18" apart. Other types 8-10" x 12-18" apart for full size heads or 6" apart for mini heads.
DIRECT SEEDING:
Seeds germinate even at low, 40°F (4°C), soil temperature, but poorly above 75°F (24°C) depending on the variety and seed lot. Sow seeds 1" apart, rows 12-18" apart. Cover seed lightly, about 1/8", and firm soil gently. Thin iceberg and romaine lettuce to one plant every 10-12", other types 8-10" for full size heads or 6" for mini heads. Dry soil must be watered to ensure coolness and moisture, and for uniform germination.
SALAD MIX/BABY LEAF:
Sow in a 2-4" wide band, about 60 seeds/ft.
MT0 SEEDS: A variety name followed by MT0-10 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 10,000 seeds. MT0-30 indicates that no LMV was found in a sample of at least 30,000 seeds.
NOTE:
A disease-free test result does not guarantee a seed lot to be disease-free, only that in the sample tested, the pathogen was not found.
DAYS TO MATURITY:
For full-size heads in mild temperatures from direct seeding; subtract 10-14 days if transplanting. Note: Maturity can be 3 or more weeks later in cool weather, and up to 1 week earlier in hot weather.
AVG. DIRECT SEEDING RATE:
For full-size heads (precision seeded): 220'/1,000 seeds, 5,300'/oz., 5.5 oz./acre 2.5" apart in rows 18" apart. For baby leaf: 16'/1,000 seeds, 400'/oz., 6,400'/lb. at 60 seeds/ft.
TRANSPLANTS:
Avg. 20,000 plants/oz.
SEED SPECS:
SEEDS/OZ.: 20,000-30,000 (avg. 24,000).
PACKET:
500 seeds.

Heirloom

Heirloom

HL = Heirloom. Seeds which have been saved over many years and passed down, in original form, from generation to generation.

Salad Mix Component

Salad Mix Component

A mixture of lettuce and greens with different colors, flavors and textures, harvested at a tender, baby, bite-size stage. For fresh salads.

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