Why does the shell get stuck to the seedling?
Every Cannabis grower has had to deal with a seed’s shell getting stuck to the newly sprouted plant. It’s not a major issue, but if left too long it can cause damage to your young seedling.
In this guide I will explain how to remove the seeds outer shell from the seedling without causing any damage to the plant.
If the shell is still too difficult to remove after applying some water, repeat the process again.
How to remove the seed shell from a Cannabis seedling
When you plant a newly germinated seed into soil the hypocotyl (basically the stem) grows through soil and reaches for the light. As it pushes up through the soil the outer shell should detach, but sometimes it doesn’t and it gets stuck.
The most common reason for the shell getting stuck is not potting your seeds deep enough. If the hypocotyl doesn’t have to push through much soil then there’s less movement and friction to detach the shell.
Seeds don’t need light to germinate. In fact, too much light can decrease their likelihood of popping. You only need to worry about providing light once your seedlings actually emerge from the soil. But make sure to start with low light intensity before gradually increasing over time.
To prevent spoiling your seeds, avoid unnecessary handling. Use clean gloves and some disinfected tweezers or something similar. This will greatly minimise the risk of your seeds being contaminated.
If you’re germinating indoors and temperatures are too high, see whether you can get it cooler with some fans or by opening windows. If that doesn’t work, consider an air conditioner for your grow room to keep temperatures at bay.
13. TOO MUCH LIGHT
For more information on storing your cannabis seeds properly, see our blog on How To Preserve Seeds.
There are a whole lot of things that can prevent cannabis seeds from germinating. Here are some of the most common reasons why your seeds may not “pop”:
While tap water may be okay for more mature cannabis plants, it can be a problem for seeds and seedlings. Tap water contains chlorine, fluoride, and salts that can be detrimental to healthy growth and may even prevent seeds from sprouting altogether.
Likewise, when temperatures are too low, this can introduce a whole host of its own problems, including inhibiting seeds from sprouting. Colder temperatures also increase the risk of other plant diseases. What to do about it? If you want to grow outdoors, don’t set plants outside too early. Instead, germinate indoors and allow your seedlings to grow for a few weeks.