Because training happens during vegetative growth, for autoflowering plants, this period could be as short as a few weeks, which means time is limited. Try topping your autoflowers after they have three nodes, and stop once they begin to flower. You will want to prune them lightly.
Check out Johanna’s full video series on how to grow weed on Leafly’s YouTube .
It’s important to keep the delicate seed sterile, so don’t touch the seed or taproot as it begins to split.
If cannabis is legal in your state, you can buy seeds or clones from a local dispensary, or online through various seed banks.
Finding a cannabis seed in your stash is not ideal, but we’ve all been there before. Although much less common than it once was, it still happens. Sometimes you’ll notice one when grinding down some flower, or you’ll see one pop, spark, and crackle from the heat of a lit bowl.
The reason you want to start with a small container is that your plant’s young roots thrive on oxygen. Cannabis plant roots “breathe” oxygen, just like we breathe air, and it’s important that young cannabis roots get plenty of oxygen so the plant can grow as fast as possible.
You can make a DIY germination station at home by putting a plastic dome over a plate on a heating pad.
It’s a steady 85 degrees F in there, no idea about the humidity in the bottles.
Protect yourself! Always use a mask, goggles and gloves when working with Rockwool.
Your Cannabis Seedling’s First Few Weeks
I highly recommend using Rapid Rooters over any other starter plugs. They are less prone to problems and work great with any growing medium (including hydroponic systems).
Some seeds take longer than others to sprout. Especially older seeds tend to need longer to pierce through their shell. However, if seeds are left soaking too long, and haven’t yet sprouted, they can drown.
How to Use: Soak Jiffy pellets in warm water, which makes the pellets expand in size, as pictured below.
Germination Method 3: Germination Station
Finally, most cannabis plants stop at 7-finger leaves
Sprouts emerge and roots appear in just a few days.