As opposed to iceberg lettuce, romaine will not be thickly closed when mature. Unlike iceberg lettuce, romaine will not be thickly closed when ripe. You will know they have matured by their appearance: they will be dark green in colour, and look leafy and open. Lettuce is harvested before flower rise, about 2-3 months after sowing or transplanting. Before the first frost or really cold weather arrives, harvest the lettuces completely. Many farmers peel the outer leaves and allow the rest of the plant to continue growing to extend harvest time. Romaine lettuce can be harvested as long as it is large enough to use. In this case, romaine lettuce takes 75 to 85 days. Most types of lettuces mature in 45 to 55 days, allowing many farmers to plant two or even three crops. This is best achieved by providing plenty of organic matter (compost, decomposed manure or mould) to loosen and enrich the soil. Lettuce can tolerate some days with temperatures of 28 ☌ to 30 ☌, as long as the nights are cool.įor maximum lettuce production, it is advisable to select a site where the soil drains well, but retains some moisture. Optimum temperatures for growth are 16 ☌ to 27 ☌, so that the plants will flower and produce seeds. It is important to consider the temperature when planting romaine lettuce seeds, as romaine lettuce is adapted to cool growing conditions. Transplanting should be done in cool, cloudy weather or early evening so that the transplants can spend the night in cool conditions. Plants should be spaced 12-18 inches apart more space generally means larger heads. Lettuces are a great leafy green crop because they grow quickly, produce for a long time and are not very demanding as long as the plants are kept sufficiently watered. Because lettuce grows quickly, it is best to plant a small number of seeds at a time, staggering the sowings. Growing romaine lettuce is perfect for beginners it is easily sown by seed directly into the soil as soon as the soil can be worked. Romaine lettuce is used in the celebration of Passover and is a kind of bitter herb that symbolises the bitterness of the Jews when they were enslaved in ancient Egypt, it is a lettuce with history. It has a slightly bitter taste, which is why it is one of the most commonly used lettuces in salads. It is still consumed today in the Mediterranean region of the world and has become popular in other parts of the world, especially as a main ingredient in all salads. Romaine lettuce spread to Rome, where it was given the Italian name “romana”, coming from Rome. Many sources trace the emergence of Romaine lettuce to the Greek island hundreds of years ago, where it first got its name from the island of Cos, where lettuce was first introduced. Romaine lettuce grows on a tall head of stout leaves and has firm ribs in the centre. Romaine lettuce also called “cos lettuce” in other areas of the world, is a variety of lettuce from the longifoliate plant family Lactuca sativa L.
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