Vegetables Lettuce Butterhead Lettuce (Boston) Mirlo

Mirlo

Organic Pelleted Lettuce Seed

Product ID: 3882GP

Large, bright green butterhead with disease resistance.

Mirlo has the tendency to fill in but stay open at the same time, creating a longer harvest window than varieties that form dense heads. The bright green color makes this variety look more "fresh" compared to the traditional light green Boston types. Widely adaptable and performs well in spring, summer, and fall. Utility Patent granted. High resistance to downy mildew races 1-28, 30-32, Nasonovia ribisnigri aphid, and tomato bushy stunt virus (lettuce dieback complex); intermediate resistance to lettuce mosaic virus. MT0-30. Organically grown. Avg. 1,100 seeds/oz. Packet: 250 seeds.

Details

Size
Price
 
Quantity
Availability

Packet

$6.20
In Stock

1,000 Seeds

$18.50
In Stock

5,000 Seeds

$46.20
In Stock

50,000 Seeds

$364.00
In Stock

100,000 Seeds

$692.00
In Stock

500,000 Seeds

$3,245.00
In Stock
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Additional Information

Many (though not all) of our pelleted lettuce varieties are primed to increase germination uniformity, and to break thermal and/or light dormancy. However, the priming process decreases the storage life of the seed, so pelleted seed must be kept cool and dry prior to planting, and should be used within one year of purchase.


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 (15.5–18.3°C). Careful variety selection is important for hot weather plantings. Sow every 3 weeks for a continuous supply of fresh lettuce.
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.
THERMAL DORMANCY: Lettuce seed can enter thermal dormancy when exposed to high temperatures. Optimum germination results at soil temperatures of 60–68°F (15.5–20°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, 1 seed/in., or in ¾" 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 2-3" 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.
MT0 SEEDS: A variety's description 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.
TRANSPLANTS: Avg. 20,000 plants/oz.
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.
AVG. DIRECT SEEDING RATE: 130,000 pellets/acre at 6 pellets/foot in rows 24" apart or 6,000 pellets/1,000 foot row.
PELLET SIZE: 13.0.
SEED SPECS: PELLETS/OZ.: Avg. 1,100.
PACKET: 250 seeds, sows 41' at 6 pellets/ft.

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Quick Facts

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Latin Name
Lactuca sativa
Days To Maturity
Average number of days from seeding date until ready for harvest.
52 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
TBSV
Tomato Bushy Stunt Virus
LMV
Lettuce Mosaic Virus
DM, Nr, TBSV, 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.
Organic Seeds, Plants, and Supplies Organic Seeds, Plants, and Supplies
Plants, or seeds harvested from plants, that have been grown without synthetic fertilizers or pesticides, strictly adhering to the USDA's National Organic Standards Board (NOSB) organic gardening practices are designated as Organic. For supplies, such as fertilizers and pest and disease controls, the OG symbol identifies products that meet the USDA's National Organic Program (NOP) rules according to a third-party authority such as OMRI, WSDA, and/or a local authority such as MOFGA or NOFA.
Organic Seeds, Plants, and Supplies Greenhouse Performer