Examples of seedlings where grow lights are critical Some plants are short-day plants so they need light for less than 12 hours per day, some plants are long-day so they need light for 14-18 hours each day and some plants are neutral-day they require only 8-10 hours light per day. The ratio of rest time to growth time affects the growth rate and some other biological processes too. Plants usually respirate in dark, this is an important phase of their growth process. The right exposure to light – It doesn’t matter what type of plants are you growing, they need rest too. So the light should be placed nearer to the leaves. Most of the seedlings grown in an indoor garden need a high rate of light intensity usually. Each plant needs a different light intensity. The right light intensity – The intensity of light that a plant receives is determined by the brightness of the bulb and the distance between the plant and light source. Sunlight contains the full spectrum of light, including all the colors of the rainbow.Ĭhoosing the full spectrum light is essential that produce the balance of cool and warm light which helps to regulate the plant growth. The right color temperature – A light color is also known as color temperature, the blue end is for cool light and the red end is for warm light. Seedlings Under Grow Lights The basics of the indoor lighting system:
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