germinating marijuana seeds under lights

Germinating marijuana seeds under lights

Soak the pellets in warm water and then poke a small hole into them, about a half-inch deep and just big enough for the seed to fit snugly into. Here, they can be watered, kept warm, and even begin to take root. The whole pellet will eventually be transferred to wherever the germinated plant will be grown.

The concept here is to use a piece of growing medium, such as widely available peat pellets, and to plant the seeds directly into it.

This is slightly riskier than the paper towel method because of the aforementioned risk of drowning, but it has the potential to revitalize older seeds.

Always avoid seeds that are light green, as they have not aged long enough to sprout. More mature seeds are darker in color and almost brown.

3. Peat Pellets

Getting cannabis seeds to sprout is known as germination. In nature, this happens underground, but it isn’t an entirely reliable process in a well-organized grow-op.

If it has not, the seeds should be moved to a different environment as too much water can drown them. 24-36 hours is the maximum recommended time for this and is only needed on seeds that have dried out for a long period.

They may end up soaking up more moisture than expected, so be sure to check on them throughout the process and add more water if needed. Not too much though, just enough to keep the paper towels damp.

2. Soaking Overnight

Place the seeds in a glass of warm water, move them to a dark environment, and within about 24 hours, the taproot should begin to poke through.

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Germinating marijuana seeds under lights

Step two: I mix perlite into the coir at a ratio of one-part perlite to two parts coir. The coir in our mixture holds moisture without staying too wet. The perlite helps aerate and loosen the media for water to drain easily while also retaining moisture. To keep the dust down, we recommend using water from a spray bottle to wet the perlite prior to handling. I stress again to wear your dust mask when handling perlite.

A few notes about water:

Getting Your Seeds Planted

When is the best time to start your seeds? If you are going to be growing your plants indoors, then anytime you’re ready is the best time. If you will be transplanting to an outdoor space, then it depends on the weather where you live. Check with The Farmer’s Almanac, or the back of the seed package will usually tell you how many weeks before the expected last frost date for your area to plant. Don’t know the last frost date for your region? This is a good page to help you figure that out.

How Long Will It Take before I see something happening?

A common question with an answer most of us don’t want to hear… it depends. I will say, the highest success rates come from recreating each particular seed’s ideal germination environment. Most seed packages will give you a time range anywhere from a few days to a few weeks. All seeds are a little different, even the same packet of seeds can have some that sprout quicker than others. Be patient, monitor your temperature and moisture and then you will be rewarded greatly when those first seeds germinate and those little sprouts emerge. It’s exciting to watch those small seeds become large plants. Happy Gardening!