Plus, this variety of lettuce takes less than two months to be ready to harvest. If your entire garden is on the sunnier side of the Earth, you can use a nylon net or a screen to cover your lettuce and protect it from direct full sunlight. Stalk: Dandelion will not grow a thick stalk as it grows older. Wild lettuce has multiple flowers. Posted by: Debra L - Rosemount, Dakota County, MN, USA … To do this, plant new seeds every two weeks throughout the year. The plants have not died instead they have long stems and flowers. Leaf lettuce is more nutritious than head … Why Lettuce Has Flowers. It is most often grown as a leaf vegetable, but sometimes for its stem and seeds. Tracing the history of many varieties is complicated by the practice of many companies, particularly in the US, of changing a variety's name from year to year. I do love my lettuce and grow it every year and that's why tips for growing lettuce are included here. Documentation from the late 19th century shows between 65 and 140 distinct varieties of lettuce, depending on the amount of variation allowed between types – a distinct difference from the 1,100 named lettuce varieties on the market at the time. The blooms resemble small dandelions and the plant gets quite tall as if it's reaching for the sun. Cabbage has less water and is also tougher than lettuce. Flower: Open branching cluster of stalked flowers at the tip of the plant and arising from leaf axils in the upper plant. [33] Hydroponic growing methods can reduce this water consumption by nearly two orders of magnitude. It actually comes from wild lettuce, a weed similar to prickly lettuce.). Denise, while dandelion leaves may be used in salads they are not considered a lettuce. Romaine lettuce is often used for Caesar salads. Lettuce and other greens are cool weather crops. It is very similar in look and medicinal effects to Wild Lettuce, Lactuca virosa. Different locations tended to prefer different types of lettuce, with butterhead prevailing in northern Europe and Great Britain, romaine in the Mediterranean and stem lettuce in China and Egypt. Aster yellows are a disease-causing bacteria carried by leafhoppers, which causes deformed leaves. Butterhead – Also known as Boston or Bibb lettuce. Flower Size: Dandelion flowers are usually around 1.5 inches wide. By the late 1900s, Asia, South America, Australia and Africa became more substantial markets. Saving seed not only saves money each year but over time it will help acclimate a variety of lettuce to your garden specifically. The stem of the plant is short, with larger leaves arranged at the bottom and becoming progressively smaller further up the stem. Let the lettuce continue growing – not awfully attractive but maybe the flowers will help attract and support some populations of beneficial insects. [10] 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. If your plant begins to stretch toward the sky there’s a good chance it’s bolting. Soil Requirements; If you want to grow healthy and fresh … Wild lettuce (also known as Lactuca Virosa) is a plant where the leaves, sap, and seed are used to make medicine.This medicinal lettuce has been widely used since ancient Greece. After the 1940s, with the development of iceberg lettuce, 95 percent of the lettuce grown and consumed in the US was crisphead lettuce. Post-Roman Europe continued the tradition of poaching lettuce, mainly with large romaine types, as well as the method of pouring a hot oil and vinegar mixture over the leaves. I have a whole collection of varieties. It can be plagued by numerous nutrient deficiencies, as well as insect and mammal pests, and fungal and bacterial diseases. Generally grown as a hardy annual, lettuce is easily cultivated, although it requires relatively low temperatures to prevent it from flowering quickly. [26] Lettuces meant for the cutting of individual leaves are generally planted straight into the garden in thick rows. Leaves … It is a cool-season vegetable and prefers the cooler seasons of spring and autumn for leaf production. [10] Lettuce was considered a sacred plant of the reproduction god Min, and it was carried during his festivals and placed near his images. If you do this, you’re missing a great opportunity. Outbreaks Associated with Fresh and Fresh-Cut Produce. If the lettuce are left in the field beyond that stage, they will eventually mature and sprout flowers and then seed pods. In 2017, world production of lettuce (report combined with chicory) was 27 million tonnes, with China alone producing 15.2 million tonnes or 56% of the world total (see table). Instead of a generic looking and tasting salad, you can make something interesting to eat and look at. Simply trim off any leaves you wish to use while the plant is growing, about an inch above the crown where all the leaves meet, so the plant can continue to grow. The genus Lactuca is commonly called lettuce. so don't disturb the roots when hoeing. Plants that have produced a plump head or substantial greens throughout the season are likely flowering naturally and should be left to go to seed. Inhaltsverzeichnis öffnen. 1. It happens due to stress factors like: When this happens it’s called bolting. [16][19] The ovaries form compressed, obovate (teardrop-shaped) dry fruits that do not open at maturity, measuring 3 to 4 mm long. 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