What color of light is best for plant growth? red, clear, blue or green?

It depends upon the type of plant. Blue light will result in strong vegetative growth. Red light would be optimal for flowering and fruiting. It would be possible to begin with a blue light and switch to a red light when flowering begins. Ideally, a fluorescent light would reproduce more of the spectrum of natural sunlight. A combination of fluorescent and incandescent bulbs would be best.What color of light is best for plant growth? red, clear, blue or green?
Green, and blue don't have as much frequency that red and clear. but red as the highest frequency an any type of colour. but i would just let the sun to be the light. it gets 12 hour or least of sunlight, and least than 12 hours of dark light, depending if it's daylight savings or not. Black light is the best light to give to the plant, for it to grow faster. also don't forget to water it as well. lol, just messy with you.What color of light is best for plant growth? red, clear, blue or green?
Clear or white. Don't use red. You want a high pressure sodium light. It mimics the sun the best. You could probably pick one up at lowes or home depot. If your growing just one plant you could probably get a 50-150 watt for 50 - 150 clams. The larger the more expensive of course. Without knowing what your growing i can't make anymore recomendations. You can't just put your plant underneath any old light either. It has to be a special grow light like HPS. I've heard that some lcd lights work but i would go with a high pressure sodium.
If youre growing pot use a red light.





I only know this because an exboyfriend of mine had a red light in his bathtub from when he used to sell!