The Young Marijuana Seedling
After germinating the marijuana seeds that you ordered from koalitymedicinals.com you will then plant the emerging seedling into the soil, or another growing medium. If planting in soil, you may plant the seed tap-root end down, in the soil 1/8 inch or so deep, and very lightly pack the soil over it.
If growing in a hydroponic setup, many marijuana growers will use Rockwool cubes to root their seedlings and clones in. When using Rockwool cubes, poke a small hole in the top slightly larger than the sprouted seed and place the seed tap-root down in the hole. Then take a very small piece of Rockwool and cover the hole in the same way you would with soil. This is said by some to make the young seedling “breakthrough” making it stronger from the very beginning.
Keep the growing medium damp for a couple of days and supply 16-18 hours of uninterrupted fluorescent light per day and you should see your young marijuana seedlings emerge.
The first little round leaves called the cotyledon will emerge after 2-3 days followed by the first set of true leaves that have the signature ”spiked-leaf” look to them.
During this time pay close attention to the climate. Keeping the light at the right distance, and the growing medium at the right moisture level can be crucial for success here.
If you let the roots of your young seedling dry out, they will shrivel and quickly die. If you overwater them they will also have problems like root rot and die.
As you can imagine, a young marijuana plant at the seedling stage is very fragile, like a baby. You must nurture your baby plants very much the same way you would a child and that means lots of careful eye-balling and attention.
During the 3-6 weeks of the seedling stage, you will want to pay attention to how close you are keeping the lights from the tops of your seedlings. If you are using a small fluorescent or T5 light, you may get away will keeping the light very close to the tops of your seedlings, while if you try the same with a metal halide or high-pressure sodium bulb, you will surely kill your seedlings.
Most marijuana growers these days seem to be using fluorescent lighting on their seedlings. Ideally, these types of lights can be placed about 10-12 inches from the tops of the young marijuana seedlings. At this height, the lights are not too hot or bright for the seedlings, but they are powerful enough to promote shorter, stockier growth. Keeping the light too far away will cause the seedlings to use all their energy “stretching” by growing tall-skinny main stems in order to get closer to the light.
The stretching of marijuana seedlings to reach the light that is placed too far away usually results in the young seedlings falling over and eventually dying, or best case scenario they will be sickly looking, tall, skinny, under-yielding plants that you won’t enjoy growing.