The Best Lights to Grow Marijuana

Meta Description: There is one limitation that growing indoors, light. That is why the right light source that you use for indoor marijuana plant growth should be chosen. Read on to find out more.


In order to keep your marijuana plants from getting caught, you might think of growing indoors. There is much to consider when doing so. Growing outdoors is the first choice for most growers because you need not regulate the growing environment of your marijuana plants. But for indoor growing of marijuana plants, you need to carefully regulate the growing environment of your grow room. This requires much work and monitoring. One of the important factors to consider is the light source. Here are some of the best lights to grow marijuana indoors.

Choosing the best lights to grow marijuana

There are different kinds of light sources that you can choose from to use for your indoor marijuana grow room. Here are some of your choices:

  • Fluorescent–when you say indoor lights, the first kind that comes to mind are fluorescent lights. If you are to use this light, there are advantages and disadvantages for this. This kind of light source has a light spectrum that can use more effectively. But the light emitted by fluorescent lights covers a large area so it is not concentrated directly on your marijuana plants. That is why constant readjusting is needed to make sure that it is directed to your marijuana plants. Fluorescents are very useful for cloning and starting seedlings. They produce and supply more gentle light than any other kind of light source.
  • High Intensity Discharge Lamps (HID)–this kind of light source is easier to use compared to fluorescent lights. And it is also more efficient to use. It has low wattage and at times sold for outdoor use. Lights with high wattage are usually used to light up streets, parking lots, stadiums and other large areas. This light source has to types:
    • Metal Halides–this kind of light emits a white light that is slightly bluish. They are usually used to light stadiums, convention centers, gymnasiums and other large areas where you want a natural looking light. For growing marijuana, you would want to use this during the vegetative stage of your marijuana plants.
    • High Pressure Sodium–this light emits a pink or amber light. They are usually used for parking lights and other areas that light color is not essential. This is more efficient than metal halides HIDs. They produce more light and use lesser amount of wattage. HPS can be used alone without causing a detrimental effect on the plants and promote faster plant growth than metal halides during the vegetative and flowering growth stages.

Some Notes

Even if you use the best lights to grow marijuana, if you don’t know how to use it properly you won’t get the most out of it. Here are some points that you need to remember when you use grow lights. When you use fluorescent light you need to position it three inches from your marijuana plants. For HID lights, here are the distances from the marijuana plants:

  • 1000 Watts: Twelve to eighteen inches
  • 600 Watts: Eight to sixteen inches
  • 400 Watts: Eight to sixteen inches
  • 250 Watts (or lower): As close as possible