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can you grow marijuana from seed with led grow light

There are many reasons to use LED lights when growing cannabis.

This was not always the case. When LEDs were first gaining momentum among growers, the technology was still fairly new and had not entirely been perfected. Think about how expensive and inconvenient cutting-edge technology like smartphones were when they first came out, and it often wasn’t worth it. For example, many agree that the first-generation iPhone was not the greatest. However, today’s smartphones are much more affordable, and they are everywhere.

Different Types of Cannabis Grow Lights

For many, the main reason is that they are relatively inexpensive when compared to the much pricier HID setup. This is especially true if you are growing a smaller number of plants. Our grow lights at A Pot for Pot are specifically designed for growing a small number of marijuana plants and is priced well under $200 – proof that high-quality lighting doesn’t need to be expensive.

It used to be that lighting was one of the most expensive aspects of growing marijuana. A good set of HID or CFS lights could set you back a couple hundred with all the required equipment. Now, thanks to LED lights , cannabis grow lights are much more affordable, making growing cannabis at home much more attainable.

The benefits of using LED cannabis grow lights are many. The next big question is how to grow marijuana using only LED lights. A good rule of thumb is one light per every 1.5 square feet. This generally will yield you up to 6 ounces per plant, which ends up covering what you spend on the light and will definitely end up saving you money in the long run. If you are growing only 1-2 plants, our single 75 watts LED light supplies plenty of light for your plants.

Spread-style LEDs are comprised of a large number of small LEDs that are spread out on a larger panel or board. There are also spider-style LEDs and rack-style LED lights, which are widely used in commercial greenhouses. The spider-style LED lights don’t use flat panels, but spider-like “arms” with LEDs instead. The main advantage of spread-style grow lights is that they are among the most energy-efficient LEDs, which means you can get the most light for the wattage you’re using. A disadvantage is that quality spread-style LEDs, such as the spider-style lights, can be extremely expensive.

COB means “chip on board”. A COB LED is made of many hundreds of tiny LEDs on one single small chip, as opposed to differently coloured LEDs spread over the entire fixture (as is the case above). COBs are among the most efficient LEDs. They produce a very intense white light that is similar to the natural light spectrum of the sun. One advantage of COBs is that they have good penetration into the plant canopy due to their intensity, resulting in a final yield approaching that of quality HID lamps. They also have a light spectrum that is optimal for healthy growth, and are very energy-efficient. The drawback can be that a quality grow light with COB LEDs is quite expensive compared to cheaper purple lights. Some grow light manufacturers combine several COB LEDs into one fixture, often equipping them with lenses and reflectors. There are also lights available that are comprised of only one single COB. These single-COB fixtures can be a good choice for larger growing spaces, as you can space a number of them evenly for light distribution across the entire area. Most growers use COB LEDs with a light spectrum that works both for vegging and flowering, but you can also find those with a spectrum (“colour temperature”) tuned specifically to vegging or flowering.


How long you want to veg your plant will normally depend on how much space you have available. You can technically let your plant grow under 18–24 hours of light as long as you want, but there will likely come a time when you want to switch to flowering, as the plant would otherwise simply grow too big. Know that some cannabis strains can stretch considerably (up to 2x or more) during early flowering. Take this into account upon deciding when to initiate the switch to bloom.

Although this is convenient for most, there are those who want to fine-tune their lights for best results and optimal efficiency in each growing phase. For this purpose, some commercial LED lights have a switch to activate a veg light spectrum or a flower light spectrum. Here are some more factors to consider throughout each stage of growth.

LEDs produce a lot less heat compared to HID lights, which can be a big advantage as you won’t require extra cooling systems in your grow room or tent to keep temperatures optimal. This is especially advantageous if you grow in summer or happen to live in a warmer climate. The downside to this is that if you live somewhere cold, you may now need to consider a heater in the colder months. But as LEDs save you money over time, this can make up for the potential costs of running a heater.