Get Seedlings Light
Gif. Proper seedling lighting is the the only thing that will prevent leggy seedlings, and thick, strong seedlings have a much better chance of surviving the transition to the garden in the spring. This is called the veg stage.
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Veg is most important early in a plant's life. If using fluorescent grow lights, adjust the height of your lights as your seeds grow. How much light do my tomato seedlings need per day?
Light is the number one underestimated factor of growing, even at the seedling stage.
Up to 18 hours of light are common for a marijuana plant which is in a seedling stage. Mutations in these photo receptors and their signal transduction components lead to seedling development that is at odds with light conditions, for example seedlings that show photomorphogenesis when grown in the dark. If seedlings don't have enough light, they grow more slowly and can become leggy. Rotate the pots regularly to keep plants from leaning into the light.
