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Romaine or cos lettuce (Lactuca sativa L. var. longifolia) is a variety of lettuce that grows in a tall head of sturdy dark green leaves with firm ribs down their centers. Unlike most lettuces, it is tolerant of heat.
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Beans, corn, cucumber, eggplant, lettuce, marigold, melon and sunflower: Peanuts encourage growth of corn and squash [88] Walnut tree: Juglans spp. Many types of grass including Kentucky bluegrass (Poa pratensis). European alder (sacrifice plant), hairy vetch, [96] crownvetch, [96] sericea lespedeza [96] Apple trees, [81] grasses [96]
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It has been adapted by and to other countries (such as Canada) in various forms. A plant may be described as "hardy to zone 10": this means that the plant can withstand a minimum temperature of 30 to 40 °F (−1.1 to 4.4 °C). Unless otherwise specified, in American contexts "hardiness zone" or simply "zone" usually refers to the USDA scale.
A plant cutting is a piece of a plant that is used in horticulture for vegetative (asexual) propagation. A piece of the stem or root of the source plant is placed in a suitable medium such as moist soil. If the conditions are suitable, the plant piece will begin to grow as a new plant independent of the parent, a process known as striking.
Morton has bred at least 99 types of lettuce, [5] and his company, Wild Garden Seed, offered seed for 114 lettuce varieties in 2016. [6]On August 10, 2015, 'Outredgeous', a red romaine lettuce bred by Morton in the 1990s, [7] became the first plant variety to be planted, harvested and eaten entirely in space, as a part of Expedition 44 to the International Space Station.
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