keep the house plant where they get enough light
Save. Anest/iStock/Getty Images. Leggy seedlings are tall, thin and weak, but you can prevent leggy seedlings by sprouting seeds at the right temperature and by providing the right levels of light, water and fertilizer. In the plant world, tall doesn't always mean healthy; in the case of seedlings, the plants may never grow well. As you might have guessed by now, the best way to prevent leggy seedlings is to make sure they are getting enough light. If you are growing seedlings in a window, try to grow them in a south-facing window. This will give you the best light from the sun. Leggy seedlings are caused by lack of light, or by light that is too weak to meet the plant's needs. Luckily, preventing leggy seedlings is a pretty straightforward affair. To prevent leggy seedlings: 1  Be sure to place the seedlings in bright light. On the 12th day, your seedlings should be @ 4 in height and start a second set of leaves. To avoid keeping the seedlings from becoming leggy or stringy, try the DIF process used by greenhouse growers. This balanced procedure includes: Temperature should always remain constant - @70 - 74 degrees. At night, try to keep it a couple of degrees cooler if you do not use grow lights. It could be that the window you are growing your seedlings in does not provide enough light or it could be that the lights you are using as grow lights are not close enough to the seedling. Either way, the seedlings will get leggy. Advertisement. This happens due to the natural reaction of plants to light.
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how to keep house plants from becoming leggy