For all types of cannabis, it is usually a good idea to purchase lighting that has both blue and red light spectrums. With regular plants, it saves you from the hassles and costs associated with changing the lighting to induce flowering. LED lights have a full spectrum of light, so you can use the same lights from seedling to harvest.
Lighting Terms That you Should Know
Regular (photoperiod) cannabis plants require different spectrums of light to produce flowers. Blue spectrum light is needed during the vegetative stage, while red spectrum light is needed to transition to the flowering stage. However, if you start with autoflowering plants, you will not need to change the lighting to start the flowering stage, so the light spectrum is less of a concern.
Top 10 Indica Strains
Lumens is a measure of how much light a given light source emits during each second the light is on. Like the light spectrum, lumens are more relevant for photoperiod plants. “Regular” cannabis plants require varying amounts of lumens during the different stages of growth. For example, they need between 2,500 and 5,000 lumens per square foot in the vegetative phase, but it jumps to 10,000 lumens per square foot during the flowering phase.
CFL grow lights are the twisty-looking bulbs you can find anywhere you normally buy light bulbs. They produce a great spectrum for growing cannabis and can be used in tiny spaces where no other grow light would fit such as the inside of a cabinet.
Note 2: Incandescent light bulbs (old fashioned light bulbs) are NOT suitable for growing marijuana!
Pros and Cons of HID Grow Lights
Keeping CFLs close results in the best yields and growth