Overwatering is much worse than occasional underwatering, as plants can almost always recover from slightly dry conditions. But when they’re constantly overwatered, this deprives the roots of oxygen and will lead to all kinds of troubles like fungus and root rot. Always allow the soil to dry out between waterings. Less frequent watering is better than overdoing it!
Fill a glass halfway with lukewarm (22°C) water and drop in your seeds. After about 3–5 days, the seeds should have sprouted, and you can now transfer them (carefully!) into your prepared soil pots.
8. NOT HAVING PROPER VENTILATION
Fill a small seedling pot with an unfertilised or “light” potting mix. Poke a small hole about 1cm deep in the middle and place your seed inside. Cover lightly with soil. Water the soil and cover the seedling pot with clingfilm to lock in moisture. Seeds should germinate in a few days.
Excessive moisture is also bad news for seedlings. When humidity levels are too high or when you overwater your seedlings, this can lead to the dreaded damping off, a deadly fungal disease. Seedlings will become weak and tip over, and there is nothing you can do to save them. Avoid extremely high humidity and overwatering, and make sure to use a sterile medium for germination.
A common reason for heat stress is when your grow lights are too close to the plant canopy. If you spot signs of light burn, such as curled, wilted, and brown leaves at the top of your plant, move your lights further away.
It does happen: Someone hands you a bag of seeds of “some great weed” for you to grow. You’re happy since you just saved some cash on seeds. The problem is, you don’t know what type of cannabis the seeds are, whether it’s sativa, indica, autoflowers, etc. We’re already off to a pretty bad start.
With cloning, you don’t have to get new seeds every time you want to grow another plant—you just take a cutting of the old plant—and you don’t have to germinate seeds or sex them out and get rid of the males.
Plants grown from seed can be more hearty as young plants when compared to clones, mainly because seeds have a strong taproot. You can plant seeds directly into an outdoor garden in early spring, even in cool, wet climates.
Top feminized cannabis strain families
For a seed to be viable, it must be mature enough to have a completely formed genetic blueprint, and it must be strong enough to germinate and pop through its hard casing and sprout its crucial taproot.
Most cannabis plants begin flowering when the amount of light they receive on a daily basis reduces. Outdoors, this happens when the sun starts setting earlier in the day as the season turns from summer to autumn. Indoor growers can control when a plant flowers by reducing the daily amount of light plants receive from 18 hours to 12 hours.
So don’t discount bud because it has a seed or two in it. While not ideal, it could be the origins of the next great weed strain.