Not all plants require the same lighting. The amount and intensity of light vary per type of plant. Three different day lengths will help determine how much your plants get: Short-day plants, such as azaleas, can thrive on less than 12 hours of light per day. Long-term plants, or vegetable and flower seedlings, require between 14 and 18 hours of daily sunlight. Day-neutral plants, including foliage-type plants, only need eight to 12 hours of sunlight a day to survive. Blue light stimulates better growth while red light promotes flowering. Fluorescent lights are safer on plants because they put out less heat. LEDs cost more but very effective in plant health. They provide red and blue spectrums for both vegetation and flowering of plants. They do not have to be close to the plants to provide appropriate lighting.