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do weed seeds need light to germinate

It is also likely that the quality of your seeds will affect their ability to handle direct light. Seeds that are already having a tough time germinating will have an even worse time doing so if they are exposed to excess light.

Generally speaking, seeds require a dark environment in order to germinate. After all, in nature cannabis seeds find their home in the dark embrace of soil. It can be hard to determine exactly how much light is too much for your seeds; however, err on the side of caution and germinate out of direct light. There’s no need to use your grow lights until after germination has occurred.

TOO MUCH LIGHT

Germinating cannabis seeds is necessary in order to sprout seedlings that develop into mature, healthy cannabis plants. However, complications with light, humidity, heat, and more could result in cannabis seeds failing to sprout. Find out what to avoid to ensure successful germination.

Cannabis seeds require a specific temperature range in order to germinate. Regardless of the germination medium you are using (soil, paper towels, etc.), the temperature in the environment should consistently sit in the 26–28℃ range. Seeds need to be kept warm during the germination process. At no point during germination should seeds be exposed to temperatures below 20℃.

There are some techniques that can be used to ensure your seedlings remain in this temperature range. Some growers choose to use special warming mats that can be set to a specific temperature and placed underneath the seedling containers. Another strategy is to place a timed heater close to your seedlings to warm them up occasionally. Once your seeds have sprouted, they will be much more resilient to fluctuations in temperature.

All you do for this method is poke a hole in the soil or growing medium that is about half an inch deep (1.5 cm). Place the seed in the hole and cover it up. Ensure that the soil or growing medium is moist, but not soaking wet. The temperature needs to be in the correct range as well.

Cannabis seeds don’t need light when they are germinating. In fact, they require an absence of light. All of the methods below call for darkness.

Once they have sprouted, you’ll want to transfer them to soil or a growing medium. See below for instructions on how to do this.

Germinating Cannabis Seeds Using Paper Towels
This is probably the most written about method, but that does not make it the best. It is easy and you won’t need any additional equipment, but it requires handling the delicate seedling.

When To Put Seedlings Under MH or HPS
You can turn the grow light on once the seeds have sprouted and they are in the soil or growing medium. Even if the plant is still not visible, the heat from the grow light will actually help warm the soil, which encourages the plant to grow.

Put your seeds on one half of the paper towel and fold the other half over them, so that they are covered. Then take the second plate and put it upside down on the bottom one, forming a dark cavern between the two plates for the seed to germinate.

These seeds are expensive, so we recommend using the method with the best chance of success, so you reduce the risk of wasting seeds as much as you possibly can.

The moisture in the cotton wool or toilet paper evaporates fairly quickly at room temperature. It is important that the seeds remain moist during the period that they have to germinate.
The moisture in the seeds activates the seed and starts germinating.
If necessary, you can cover the cannabis seeds with a piece of damp toilet paper and place a reversed saucer on top.

Cannabis seeds germinate? What’s the best way to do this?

Place the cannabis seed on a surface that retains moisture. This can be done for example on cotton wool or toilet paper on a saucer, make the surface well moist, but be careful not to get too wet.

Cannabis seeds germinate in soil/earth

It’s good to know that a cannabis seed doesn’t need light to germinate, only a humid environment. Light is only important for the cannabis seed when leaves arrive, because they absorb the light. Until then, it doesn’t matter if the light is dark.

After the carrot has emerged from the seed, it is ready to be put into the soil.
Cover the pot with a piece of transparent plastic, this way you actually make a small greenhouse with high humidity, young baby plants love it very much.

Ensure an ambient temperature of at least 20 degrees, otherwise the seeds will not germinate or will not germinate optimally. Fill the cup with water and put the cannabis seeds in it.
After 1 to 3 days the weed seeds should pop open and show the carrot.
If this is the case you can put these germinated seeds directly into the soil. Then put them about 1 to 7 millimeters into the soil with the root down. The stem that comes out of the cannabis seed after germination is not the plant, but the root! It is best to point this little stem downwards when planting the germinated seed. This way the plant will find its way down easier, this is not a must, but a tip.

Before you can start growing weed, you must first germinate the weed seeds.
In general, there are three ways of germinating cannabis seeds: