Another reason why you might need lights for growing weed is when you grow multiple plants. A single plant in a sunny room or discreetly placed on a balcony can grow just fine with sunlight and perhaps a small LED, such as what we sell on A Pot for Pot’s website. However, multiple plants will need more substantial lighting.
Top 10 Indica Strains
That is why it is a good idea to assess the lumen measurement when considering lights for growing weed. Cannabis plants need lights that provide enough lumens intensity for their proper growth.
What type of light is best for growing plants indoors?
Consider how often you’ll be growing weed and how long it will take to pay off the initial investment—if you grow once a year, it’ll take a lot longer to pay off an expensive light than if you grow multiple harvests a year.
How many grow lights do I need to grow weed?
Another consideration with cost is that some lights run hotter than others—HIDs, for example—so they may require additional fans or an AC unit to cool down a grow space. Extra equipment means more electricity, also driving up your utility bill.
Other considerations when choosing a cannabis grow light
However, because of their low price, if you’re new to indoor growing and not sure how often you’ll do it, you may want to invest in an inexpensive HID light at first to test the water.
If you get very high-wattage LEDs, you may need to vent out heat to keep the grow space cool
Metal Halide grow lights are generally used for the vegetative stage because they produce a bluish light that vegetative plants love, though this type of light can also be used all the way to harvest.
For growers who are looking to harvest 1/2 to 1 ounce of cannabis a month, LEDs may be your best choice. At this size, they are super low on electricity, run cool and need almost no setup! They get better yields than fluorescents but don’t run as hot as an HPS of similar wattage.
Metal Halide (MH) Grow Lights
Simply hang an LED light over your plants and start growing!
High Pressure Sodium grow lights are often used during the flowering stage because they are very efficient and their yellow light stimulates bud production. HPS grow lights in the flowering stage get better yields per watt of electricity than any other type of grow light available today, which is a big part of why they are so popular.
Example of MH/HPS Setups That Yield 1-5 Ounces/Month
“LEC” and “CMH” both refer to Ceramic Metal Halide grow lights, which is a type of HID light that is a bit more efficient than a regular Metal Halide light
More Light = Bigger Yields!
(up to a point, it is possible to give your plant too much light!)