They can be easily damaged and burned by intense light and heat. Seedlings need a good supply of light, but they cannot tolerate very intense light.īaby plants are very sensitive. Learn more about growing plants with lights. So, if you start with a grow light that is only suitable for seedlings, you’ll have to switch to another one during the flowering stage. In the flowering phase, the light needs of your plants will change. UV light can strengthen your seedlings, making them more prepared to receive more intense light when they become flowering plants. Your baby plants need small quantities of UV light as well. The light needs of your seedlings don’t stop there. Green light, for example, can increase the mass and height of your seedlings. One study done on artichoke seedlings showed that red light significantly increases the height and the mass of the plants.īut seedlings need red light in smaller amounts than blue light.īlue and red light are critical for your seedlings, but other frequencies of light can also boost the growth of your plants. On the other hand, red light is also important for your plants. So, the spectrum of your grow light has to be rich in blue light. Why?īaby plants are busy growing their leaves and stems, and blue light plays an important role in that process. Light comes in various frequencies (colors) that plants interact with differently.įor photosynthesis, plants can only use light in the PAR range, extending from red to blue light on the spectrum (wavelengths ranging from 400 to 700 nm).īut the light preferences of plants change from one growth phase to another.Īccording to science, seedlings need a lot of blue light. What makes light suitable for seedlings? There are two major factors involved: 1. Characteristics Of The Best Light For Seedlings
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