As long as the tip of the root stays wet the seedling will be fine! The "root" is the same as what is going to become the stem. If it appears green it means that part of the root is already in "stem" mode and isn't sensitive to the light.
Since your seedling has already sprouted and has been in placed into the right growing position, it'll probably pop its head out within just 12-24 hours! Sometimes you see just the leaves, but occasionally you actually see the seedling push the shell above ground.
Is your cannabis seedling growing upside down? Has the tap root come above the soil?
Most seedling plugs will go back into place easily, and you'll barely be able to tell it's been opened 🙂
When this happens the shell usually falls off on its own as the seedling grows!
When you see your seedling looks like this, where the part of the root exposed to the surface already looks green like a stem, you don't need to do anything.
Most of the Time Seedlings Take Care of Themselves!
Britannica defines taproot as “the main root of a primary root system, growing vertically downward.”
Please note: Cannabis plants in the wild germinate mostly in the spring for them to take full advantage of summer for growth. Therefore it is a clever trick to mimic spring conditions to encourage optimum germination.
How Long Should A Taproot Develop Before Planting?
It can be difficult to maintain the ideal temperatures between 22–25°C/71–77°F during germination. For those who struggle to maintain ideal seedling temperatures, Rockwool germination can help. Growers need only soak the Rockwool cubes in pH-balanced water. The cubes will retain the water for much of the germination period, though it is wise to check them periodically to be sure.
To germinate cannabis seeds, growers should place the seed’s crown facing upward to ensure the fragile taproot is not damaged once it emerges. On transplanting, growers should also ensure that the taproot points downwards. The seeds’ crown usually acts as a hinge to enable the taproot to find its way into the soil. Without this hinge, the taproot might struggle and give up altogether.
Before the taproots are mature enough to transplant, they must successfully germinate. Though it seems like an obvious process, it is definitely one that requires some thought. Many factors determine the germination of a seed, though the most important is the seeds’ quality. Growers can purchase quality seeds from established cannabis farms to guarantee an almost 99% success rate.
Cannabis seeds germinate correctly with relatively high temperature and humidity values. It will be necessary, especially during some seasons of the year, to use some source of heat to get a temperature of about 26-28ºC. For this purpose there are many options on the market, such as thermal cables or heated greenhouses. The latter are particularly interesting because they also provide the perfect high humidity environment for seed germination.
A germinating cannabis seed
Direct germination in soil
I had my seeds in the paper towel for 3 days. The tap-roots appeared(not out just showing a bit) and I planted them in the soil. 3 days have past and I haven't seen any progress. Is there a reason why this is happening?
Another common mistake, in this case when germinating in kitchen paper or similar, is to let the seed germinate until the cotyledons appear. If we do this, then the subsequent transplant is very difficult, and it is very likely that we’ll damage the root in the attempt. Additionally, the longer the root is exposed to air and light, the more damage will result, so it is preferable to transplant it before this occurs.
A heated greenhouse is perfect for germinating seeds