Vegetables Lettuce Ruby Sky

Ruby Sky

Lettuce Seed

Product ID: 2542

Late season redleaf.

Disease resistance makes this variety particularly well suited to late-season production. Dense heads. Ruffled leaves are intense red at the tips and green at the inner base. Uniform growth. Utility Patent granted. High resistance to downy mildew races 1-17, 21, 23 and Nasonovia ribisnigri aphid; and intermediate resistance to lettuce mosaic virus. MT0-30. Also available with NOP-compliant pelleting. Avg. 32,000 seeds/oz. Packet: 500 seeds.

Details

Size
Price
 
Quantity
Availability

Packet

$3.95
In Stock

5,000 Seeds

$34.25
In Stock

25,000 Seeds

$145.00
In Stock

50,000 Seeds

$267.50
In Stock

100,000 Seeds

$514.00
In Stock

500,000 Seeds

$2,380.00
In Stock

1,000 Seeds

$13.70
In Stock
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Additional Information



CULTURE: Lettuce is hardy and can be planted as early as the soil can be worked. It is a cool weather crop and grows best at temperatures of 60-65°F (16-18°C). Careful variety selection is important for hot weather plantings. Sow every 3 weeks for a continuous supply of fresh lettuce.
THERMAL DORMANCY: Lettuce seed can enter thermal dormancy when exposed to high temperatures. Optimum germination results at soil temperatures of 60-68°F (16-20°C). 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" apart in rows 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'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.
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): 1,000 seeds/220', 1 oz./5,300', 5 1/2 oz./acre 2 1/2" apart in rows 18" apart. For baby leaf: 1,000 seeds/16', 1 oz./400', 1 lb./6,400' at 60 seeds/ft.
TRANSPLANTS: Avg. 20,000 plants/oz.
SEED SPECS: SEEDS/OZ.: Avg. 17,800.
PACKET: 500 seeds, unless otherwise indicated.

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Quick Facts

Latin Name
Lactuca sativa
Days To Maturity
Average number of days from seeding date until ready for harvest.
58 Days
Life Cycle
Plants are either Annuals (single growing season), Perennials (grows year after year), or Biennials (require two years to mature).
Annual
Disease Resistance Codes
DM
Downy Mildew (with specific races)
Nr
Lettuce Leaf Aphid Nasonovia ribisnigri
LMV
Lettuce Mosaic Virus
DM, Nr, LMV
Hybrid Status
Hybrid: The offspring of a cross between two or more distinct parent lines, usually of same species, and selected for improved traits. Open-pollinated: A non-hybrid variety that can reproduce itself in kind, demonstrating relatively stable traits from one generation to the next.
Open Pollinated
Product Features
Greenhouse Performer Greenhouse Performer
This symbol is assigned to only those varieties that we have found, based on our trials, to be the best performers in a climate-controlled greenhouse environment. These varieties have been selected based on proven vigor and disease resistance to sustain healthy growth through a longer season, high yields to justify the investment in the structure, and excellent flavor and appearance.
Greenhouse Performer