In the context of human spaceflight, they can be consumed as food and/or provide a refreshing atmosphere. The act of growing a plant in space is just one part of a more complex, bigger and wider concern. Plants require space to grow. This is when I sat down at my computer and started doing some heavy research. The Results of using LED Grow Lights in Space. 2010-07-18 22:50:42 2010-07-18 22:50:42. Space Requirements. One factor affecting marijuana plant spacing is the differing ways reflectors, hoods, and various types of hydroponics bulbs affects the amount of square feet that have enough light intensity for your plants. In farms and gardens, this is achieved by removing the smaller or weaker plants thus making space for the stronger and more aggressive plants to grow. Small spaces cause the roots of the plant to crowd, inhibiting growth. In the late 20th and early 21st century, plants were often taken into space in low Earth orbit to be grown in a weightless but pressurized controlled environment, sometimes called space gardens. Asked by Wiki User. Astronaut farmers need to ensure that the plants grown in such artificial conditions are safe to consume, don’t have any side effects, provide more of an energy boost in relatively small quantities, and are pleasant to eat…. Common Core In this lesson, students will identify that plants need specific things to grow into a healthy plant. Wiki User Answered . When I first started, I had very little idea about how plants grow and why they need different amounts of space. Some plants grow bigger than others so it requires more space to get the light right. at least a little. NASA uses LED lighting to grow a variety of plants on the International Space Station. The space a particular plant requires to grow is relative to the size of the plant's root system and how big the plant will grow above ground. Most plants require a certain temperature to grow. • Plants need specific things to grow. • Sun and water serve a vital role in the growth process. 61 62 63. I have found that all you have to do with wildflowers is sow the seed so it almost covers the ground. : light, air, water, nutrients, and space to grow. My first year I planted way too many veggies in too small of a space and ended up with very low yields. When plants are just seedlings or cuttings they can be grown in close proximity, but as they grow their need for space will increase and they will need to be moved or thinned out. Temperature. Current studies involve growing flowering plants … Why do plant need space to grow? Humanity may be a long way from harvesting tomatoes in outer space, but researchers now have a better idea of how plants might grow in such zero gravity conditions. 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