In some cases, even if a seed isn’t completely mature, there’s still a chance it could be viable. But often these are extremely weak, take long to develop, and express other unfavorable characteristics. Growers usually discard weak plants to free up space.
Even if your seed sprouts fast and grows vigorously, it still has roughly a 50/50 chance of being female and producing buds, instead of turning out to be a male.
Aside from producing cannabis through seeds, or sexual reproduction, you can also reproduce the plant through cloning, or asexual reproduction. A clone is a cutting that is genetically identical to the plant it was taken from—that plant is known as the “mother.”
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If growing outside, some growers prefer to germinate seeds inside because they are delicate in the beginning stages of growth. Indoors, you can give weed seedlings supplemental light to help them along, and then transplant them outside when big enough.
This is sometimes referred to as “cloning by seed” and will not produce any male plants. This is achieved through several methods:
Additionally, every long-time grower will tell you that clones degrade over time.
Feminized cannabis seeds will produce only female plants for getting buds, so there is no need to remove males or worry about female plants getting pollinated. Feminized seeds are produced by causing the monoecious condition in a female cannabis plant—the resulting seeds are nearly identical to the self-pollinated female parent, as only one set of genes is present.
Once you’ve transplanted your seedlings into their new pots, give them 3–7 days to adjust. Remember, transplanting is a stressful process, and your plants will need some time to recover from it. Feed your plants too early after transplanting, and they likely won’t take up all their nutrients from their medium, which can cause problems (like nutrient lockout) further down the line.
• Leaf miners
Similarly, under-potting can be just as detrimental to your plants. Plants that are root-bound take up water very quickly, encouraging you to water them more regularly than necessary, leading to overwatering.
HOW TO PREVENT DAMPING OFF
Inside that dark, hard shell, cannabis seeds house all the necessary genetic information to sprout and grow into big, luscious plants. When exposed to humidity and warmth, seeds are able to absorb water from their environment. This process is known as imbibition, and it’s the key to life for all plants.
Your seeds are ready to plant once they’ve cracked open and released a small, white taproot. Plant your germinated seeds one knuckle (roughly 3–5 millimetres) deep with the taproot facing down. That way, your seedlings won’t have to reorient themselves.
Make sure your pots drain well to protect your plants against fungal pathogens and root rot. If your pots don’t already contain holes (or some other kind of mesh to allow runoff), you’ll need to puncture them yourself.
While their roots are young and still developing, cannabis seedlings absorb water via osmosis in their leaves. To optimise this process, it’s super important to keep relative humidity levels at 40–60%.
– Temperature has also an effect on our plant’s growth: if over 80°F, our kids will start to grow upwards. Be careful with environmental stress too for stressful situations such as plant transplants can cause them to become too flimsy and leggy. Seedlings react to stress or uneasiness (when they’re not happy with the substrate they’re growing in or aren’t receiving the right amount of nutrients) by stretching out. Be particularly vigilant in this regard.
– Shoots also have a strong survival instinct. In the same way as roots reach out for nutrients, shoots grow towards the light. This phenomenon is called positive phototropism, and auxins play a major part in it. So, if your plant shows an exaggerate vertical growth, it may be suffering from stress due to an absence of a strong light source.
Watch out for stalking fungi
– Instead, if your newborn seedlings seem unable to grow upwards because they’re either too weak or too fragile, you can use a vertical support to help them out. A slight breeze will also make shoots stronger and more resistant because plants are forced to focus their energies on the reinforcement rather than on the stretching. This means that plants will continue growing vigorously yet not so much upwards.
Growing weed is not only interesting but good fun too. Not everything is as rosy, though, for it’s also a bumpy ride full of twists and turns. A good start is always key for a good finish, so having a solid understanding of the ins and outs of marijuana seedlings can be the difference between success and frustration. By controlling their size, boosting the growth of their roots and providing them with the right kind of nutrients, we’ll lay the foundations for stronger plants and better yields later on.
The first stage is as quick as it is beautiful: right after germination, the embryo emerges through the seed coat and turns into a tiny root when sowed. As it receives nourishment and moisture, the little seedlings start to appear. In botany, this stage is known as the stage of development, and it extends from the germination and subsequent emergence of the cotyledon (two round-shaped primary leaves) to the unfurling of the first true leaves (a set of jagged leaflets). These plants are still rather fragile and spindly, and many inexperienced growers fail to properly analyze the needs of the newborn seedlings, sometimes even causing them to die.