Soil is an easy, more natural method with which to germinate your cannabis seeds because the soil protects the fragile roots from any interference. Photo by: Gina Coleman/Weedmaps
When a seed enters an environment with enough moisture, it will increase in size and slowly break out of its shell. A seedling or germ forms from which roots will emerge, helping the baby plant absorb nutrients from the soil. Seeds naturally develop roots facing down and stems stretching upward, allowing the young cannabis plant to simultaneously feed off light and earth.
How to germinate cannabis seeds
The seeds should start sprouting in about two days, though older seeds can take up to a week to sprout. You can remove them from the water and place them in the soil at any point once they’ve sprouted. Once the roots are about five millimeters long, they need to be planted.
Lay one paper towel on top of a countertop, place a few seeds, and cover them with a second paper towel. Photo by: Gina Coleman/Weedmaps
The paper towel method is also a common way cultivators pop their seeds. Some even use this method with cotton pads instead of paper towels, but the necessary steps are the same.
The seedling plugs and cubes already come moist. However, the setback is they dry out over time. Once you open a package, you have over a week to use them. Many products do not provide less than 50 cubes. If you plan to germinate only a few seeds, you could end up wasting a lot of cubes. Therefore, this method can be less cost-effective than others.
Some cannabis growers use Rockwool cubes to germinate weed seeds. The method requires some setup before you can plant the seeds. Start by filling a bowl with some water. Use some pH-balancing chemicals to bring the water down to around 5.5. You may need a test kit to measure the levels.
One benefit of the soil method is that transferring the seedling to a bigger pot is simple. The cannabis is less likely to become stressed and can adapt to the new environment quickly. A disadvantage would be needing to buy clean soil rather than using some from outside. Pathogens in the dirt can damage the young seedling. Soil density can be an issue with air flow, and growers need to be careful about the seed placement.
Jiffy Peat Pellets, Starter Cubes, and Seedling Plugs
Keep things dark but turn on your grow lights at the first sign of sprouting. Once the seeds have sprouted, you will need to provide plenty of light. Preferably, they should receive it 18 hours a day.
Growers will find that different methods work best for them. When it comes down to it, germinating cannabis seeds in water is the best way to go about it. You can get the taproot to emerge in hard and older seeds. Overall, putting water into a glass is cost-effective compared to buying starter cubes.
Many people choose to use peat pellets, starter cubes, and seedling plugs when germinating weed seeds. You can buy starter cubes and seedling plugs if you are starting out. Many of them consist of micronutrients to promote root growth. Each one already has a hole made for a single seed.
Peat pellets, starter cubes, and seedling plugs are easy to use, which is beneficial for beginners. You do not have to worry about spending time for preparation. Another advantage is that you can transport the cubes with ease, especially if you use a tray.