Although this trait can be a problem to home gardeners who attempt to save seeds, biologists have used it to broaden the gene pool of cultivated lettuce varieties. Do this especially if you have used chemicals on your crop. Join us today to ensure heirloom seeds are kept in our gardens and on our tables, for generations to come. Striking red leaves with bright green interior for stunning contrast. Radiant burgundy version of an old favorite; delicate oak-like leaves. The heads are slow bolting and compact. love the look and taste o this easy to grow green. Excellent quality even in late summer. Lettuce spread to the Greeks and Romans; the latter gave it the name lactuca, from which the English lettuce is derived. Best Features: 1) Oak Leaf Lettuce is frost tolerant so you can sow the seeds in early spring. Sign up for growing tips, exclusive offers, and new product info.
For example, ancient Egyptians thought lettuce to be a symbol of sexual prowess and a promoter of love and childbearing in women. , In the early 21st century, bagged salad products increased in the lettuce market, especially in the US where innovative packaging and shipping methods prolonged freshness. integrata and L. scariola var.  The name romaine came from that type's use in the Roman papal gardens, while cos, another term for romaine lettuce, came from the earliest European seeds of the type from the Greek island of Cos, a center of lettuce farming in the Byzantine period. Withstands hot weather, never bitter. Sow seed 1/8 inch deep, 1 inch apart in rows 12 to 18 inches apart. This page was last edited on 7 November 2020, at 23:55. Some varieties, especially those found in the United States and Western Europe, have long, narrow taproots and a small set of secondary roots. , Lettuce is very easy to grow, and as such has been a significant source of sales for many seed companies. By 50 AD, many types were described, and lettuce appeared often in medieval writings, including several herbals. These lettuces tend to be larger, bolt-resistant and well-flavored.
Looseleaf, butterhead and romaine types can typically be harvested as baby greens, while iceberg lettuce is not suitable as baby greens.  Lettuce is also used as a primary ingredient in the preparation of lettuce soup. Like Ethan said it is quite heat resistant, which is great for the south. Work in these areas continues through the present day. , Other bacteria found on lettuce include Aeromonas species, which have not been linked to any outbreaks; Campylobacter species, which cause campylobacteriosis; and Yersinia intermedia and Yersinia kristensenii (species of Yersinia), which have been found mainly in lettuce.  Crowding lettuce tends to attract pests and diseases.
 Herbicides are often used to control weeds in commercial production.
Seed Savers Exchange is a tax-exempt 501(c)3 nonprofit organization dedicated to the preservation of heirloom seeds. It is also somewhat heat tolerant so the leaves resist getting bitter.  Mammals, including rabbits and groundhogs, also eat the plants.  One variety, the woju (t:萵苣/s:莴苣), or asparagus lettuce (Celtuce), is grown for its stems, which are eaten either raw or cooked.
However, when newly harvested lettuce seed is stored cryogenically, this life increases to a half-life of 500 years for vaporized nitrogen and 3,400 years for liquid nitrogen; this advantage is lost if seeds are not frozen promptly after harvesting.. Days till maturity: 45  Seeds keep best when stored in cool conditions, and, unless stored cryogenically, remain viable the longest when stored at −20 °C (−4 °F); they are relatively short lived in storage. True to its name, the individual leaves of oakleaf lettuce are deeply lobed and shaped like the leaves of oak trees. Be sure to check out our newest seed packs, available now from Heirloom Organics. Contaminated lettuce is often a source of bacterial, viral, and parasitic outbreaks in humans, including E. coli and Salmonella. Three types – leaf, head and cos or romaine – are the most common. sativa, L. scariola var. These seeds top our list for a reason: excellent performance, incredible taste and beauty, and beloved for generations.  Although China is the top world producer of lettuce, the majority of the crop is consumed domestically. no problems to speak of. Before you harvest, consider which varieties you might want to save seeds from so that your harvesting practice includes plants chosen for seed saving. True to its name, the individual leaves of oakleaf lettuce are deeply lobed and shaped like the leaves of oak trees.  A 2007 study determined that the vacuum cooling method, especially prevalent in the California lettuce industry, increased the uptake and survival rates of E. coli O157:H7. Images on this site are protected by copyright—unauthorized use is not permitted. This fall I’m going to add it to raised beds. These include fused anthers that form a tube which surrounds a style and bipartite stigma. Lettuce leaves can also be found in soups, sandwiches and wraps, while the stems are eaten both raw and cooked. Harden seedlings by reducing water and temperature for 3 days before transplanting.  Lettuces meant for the cutting of individual leaves are generally planted straight into the garden in thick rows.  Lettuce is closely related to several Lactuca species from southwest Asia; the closest relationship is to L. serriola, an aggressive weed common in temperate and subtropical zones in much of the world. This longtime favorite oak leaf is prized for its color and texture. Withstands hot weather, never bitter. If cleaning large amounts use a mask and goggles or clean outdoors.
Space plants 6" apart, with 12" between rows. Request a free copy of Johnny’s latest catalog. Oak Leaf Lettuce is a loose leaf type of lettuce like Salad Bowl Lettuce.
The vegetable has also been linked to outbreaks of parasitic infestations, including Giardia lamblia..
Like other lettuces, looseleaf types can be sensitive to excessive heat and light, which may result in bolting, or wilting leaves.  Lettuce has been linked to numerous outbreaks of the bacteria E. coli O157:H7 and Shigella; the plants were most likely contaminated through contact with animal feces. The high water content of lettuce (94.9 percent) creates problems when attempting to preserve the plant – it cannot be successfully frozen, canned or dried and must be eaten fresh.
The Genesis Garden s a very popular Bible Garden collection. Lime to at least 6.0.
, Lettuce's native range spreads from the Mediterranean to Siberia, although it has been transported to almost all areas of the world. By the end of the century, other types began to regain popularity and eventually made up over 30 percent of production. Full Sun Oak leaf lettuce is a type of butter lettuce, with leaves that measure from 10 to 15cm. The fruits have 5–7 ribs on each side and are tipped by two rows of small white hairs. Lettuce spaced farther apart receives more sunlight, which improves color and nutrient quantities in the leaves. Rub the seed heads between your hands to release more seeds.  The consumption of lettuce in China developed differently from in Western countries, due to health risks and cultural aversion to eating raw leaves. Wonderful for the container-growing gardener. heat tolerant and I have had great results growing indoors with kratky hydroponics.
Wonderful for the container-growing gardener. Lettuce is most often used for salads, although it is also seen in other kinds of food, such as soups, sandwiches and wraps; it can also be grilled. Reportedly known as Baltimore or Philadelphia Oakleaf in the 1880s. It ships well, but is low in flavor and nutritional content, being composed of even more water than other lettuce types. integrifolia. , Western Europe and North America were the original major markets for large-scale lettuce production. Take your favorite fandoms with you and never miss a beat. Incidence, Growth, and Survival of Pathogens in Fresh and Fresh-Cut Produce", "Bashiqa Journal: A Sect Shuns Lettuce and Gives the Devil His Due", https://en.wikipedia.org/w/index.php?title=Lettuce&oldid=987580514, Articles with dead external links from October 2017, Articles with permanently dead external links, Articles containing Chinese-language text, Creative Commons Attribution-ShareAlike License. Become an Affiliate| Private Label Seeds | Contact Us.  Today, the majority of lettuce is grown for its leaves, although one type is grown for its stem and one for its seeds, which are made into an oil. Conventional seed with NOP-compliant pelleting. Amend prior to planting if needed.
It has colourful borders of autumn and red shades and it is used as a garnish. Growing Guide For an early start, seeds can be started in flats 4 weeks prior to the last frost and transplanted outdoors in mid to late spring.
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