Germinating Cannabis Seeds

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You can grow your cannabis from either a seed or a clone. In commercial marijuana production, producers will often sow many seeds of a single strain and select the best plant. There are many to consider when germinating cannabis seeds — not only the germination method you choose but also the conditions your seeds require to thrive. Growing cannabis from seeds is no more difficult than growing any other plant. It doesn’t take a magic touch or a green thumb, and it doesn’t require special knowledge of horticulture.

A Simple Guide To Germinating Cannabis Seeds

You can grow your cannabis from either a seed or a clone. In commercial marijuana production, producers will often sow many seeds of a single strain and select the best plant. During the cannabis grow stages, producers will take clones of that particular plant, allowing for uniform genetics in large production.

Since marijuana is legal in your state, you can purchase seeds or clones from the local dispensary or several seed banks online.

When is the Ideal Time of Year to Start Growing Marijuana Seeds?

The beginning of spring is the optimal time to germinate cannabis seeds for outdoor growing. Cannabis plants are annuals, meaning they will grow throughout the spring and summer before flowering in the Autumn as the days become shorter. If you’re growing your seeds inside, you can germinate them whenever you want as long as you provide them with the necessary atmosphere.

Duration Taken in Cannabis Seeds Germination

Sprouting can take anything from a few days to a week for your seeds to begin to sprout and grow into plants.

Will Seeds Germinate in a Paper Towel When Placed in The Dark?

Yes, to put it briefly, a seed will often sprout with a bit of moisture, warmth, and darkness.

A substance called phytochrome is the key to this. In light, phytochrome exists in one form, and after a time of darkness, it exists in a different form. After a few HOURS, the light form decreases to a dark state; after several MINUTES in the light, it is converted back. As a result, a seed on the soil’s surface receives enough light to maintain the dark state of phytochrome low for long enough to prevent germination. The dark version of phytochrome is only active long enough to cause germination when the seed is in complete darkness.

The tissue will help keep your sprouts moist, but it will not provide additional nutrients. They’ll have enough food to get started from seed, but they’ll require soil or food for happy roots and light to create strong green leaves.

Remember to distinguish between what a seed requires and what your seedlings require; thus, examining the plant’s requirements after germination is an intelligent idea.

What are the Optimum Temperature and Light Settings in Germination of Cannabis Seeds?

Seeds require appropriate warmth, humidity, and air to sprout efficiently. Marijuana seeds like a temperature range of 70°F to 90°F for sprouting. It’s why cannabis grow tents are dark on the outside to increase temperatures. Seeds do not require light to germinate, but seedlings need good lighting to grow.

Why Won’t My Cannabis Seeds Sprout?

When growing cannabis from seeds, seeds may fail to sprout because of various causes, including age or dryness, improper storage, incorrect cannabis germination methods, and difficulties at the seed bank.

I do not recommend disturbing or attempting to shatter the seeds at this time because they are very fragile and could be damaged. To “activate” your seed, use the “glass of water” procedure. It’s best to wait for now and be patient, ensuring they have the best sprouting conditions.

How Deep Should I Plant My Cannabis Seeds?

Direct planting is even more natural than soaking in water. Sow your seeds 1/2 inch to one inch deep in damp soil or a similar medium. Not subjecting your seedlings to transplant shock is a significant advantage of this method. They will have adjusted to their surroundings because they have grown up in them.

Bottom Line

When you want to germinate cannabis seeds, patience is essential, and this step is no exception. Taking notes is a great way to keep track of your progress and figure out what’s working and what isn’t. Refrigerate your seeds until you’re ready to start. It takes a little research and experimentation to grow cannabis, but it’s not rocket science, and it’s a VERY satisfying experience. Give home-growing a try and shop at Upper Limits Inc. for all grow tent, grow light & grow accessory product needs.

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Care and Caution When Germinating Cannabis Seeds

For growers looking to produce top-shelf cannabis, it all starts with the seeds. Rich Hamilton explains there’s far more involved than simply burying a seed in a pot of dirt.

There are many to consider when germinating cannabis seeds — not only the germination method you choose but also the environmental conditions your seeds require to thrive. These conditions include temperature, light exposure, moisture, and oxygen levels. Get any of these wrong and it could spell the end for your grow before it even begins.

Cannabis seeds can be very delicate and temperamental even when germinating in the perfect conditions. You can understand why you should approach this task with best-practice knowledge and caution.

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To try and give your seeds the best chance, we are going to look at some tips and methods to help you get better results, first time, from your germination efforts.

Firstly, what is germination? Well, germinate means “to bring to life.” Germination is the first part of a plant’s life, the growth or shooting of a seed into a seedling and then hopefully a plant.

Cannabis seeds germinate via epigeal germination which sees the cotyledons (seed leaves) pushed upward and out of the soil as the plant begins to grow. For germination to occur, several natural elements and conditions must be present in the correct ratios. Let’s have a look at them.

Water — This is needed to start the germination process as the seed is dry, holding only five percent water and needs to absorb a lot more to begin the germination process. Seeds store starch, oils, and proteins and when germination begins, hydrolytic enzymes are activated, releasing the stored supplies and giving the plant just enough of the right chemicals to get it started. Water is also needed to expand the seed’s shell and soften it, allowing it to split for the beginnings of the plant to emerge. The hardness of a cannabis seed shell can vary quite a lot. If your seed is ripe and mature enough for germination, then you shouldn’t have any problems. A more immature cannabis seed, however, will have a more rigid shell and may fail to germinate.

Oxygen — Seeds need to breathe, but without oxygen the seed may drown or suffocate. Overwatering can suffocate your cannabis seeds preventing oxygen from getting to them, so keep them moist but not soaked. Don’t overwater your seeds — use a spray mist rather than pouring water directly onto them.

Temperature — Ideally, your cannabis seeds will germinate best at their “sweet spot” between 70-75°F. If you germinate a cannabis seed outside this range, then it can negatively affect the plant’s growth and health in the future. When temperatures are too cold, it can ultimately stunt germination so keep seeds away from any drafts, open windows, or fans.

Light conditions — Cannabis seeds germinate best in dark conditions. During germination, your cannabis seed is working to develop its first root (the radicle), and roots (unsurprisingly as they exist underground) do not like light! It is therefore vital to keep your cannabis seeds somewhere dark until transplant. But as soon as germination occurs and your new seedling develops leaves, it will need to be exposed to light to start the vital task of photosynthesis. Now that we understand what your cannabis seeds need, let’s explore the most popular methods used to germinate them.

The Glass of Water Germination Method

You can leave your cannabis seeds in a glass of mineral water in a dark environment until the radicle/tip of the root shows.

Depending on the seed strain, you should generally see something happening within one to five days. Why mineral water? Well, depending on where you live, your tap water can vary immensely in terms of chemical composition and pH. The ideal pH for water when germinating is pH 7. Anything outside of this can have adverse effects on your seed. Using mineral water is a cheap and effective way of keeping a stable pH environment. If you use tap water, however, leave it to stand for 24 hours first. The tap water needs a chance to settle and dissolve any chemicals that are present and may be harmful to the seeds.

You can use an air stone and pump to oxygenate the water whilst it stands for 24 hours. By doing so, you will reduce the chance of the seeds drowning and helping to dissolve any unwanted chemicals at a faster rate.

The Paper Towel Germination Method

Using a paper towel to germinate your cannabis seeds is both reliable and straightforward. You should find that 90 percent or more of your cannabis seeds will germinate when following this method correctly.

Take a sheet of premium paper towel and fold it in half, then place the seeds to the left of center. If you are germinating more than one seed, then you can use the same piece of kitchen towel but do not let the cannabis seeds touch each other. Now fold the kitchen towel in half again so all the seeds are covered up and then saturate it with water.

Mineral water is excellent to use, or if you are going to use tap water, then follow the recommended process for the glass of water method as previously discussed. Now leave the kitchen towel on a plate in a dark place as the roots will hopefully begin to develop soon and they do not like the light.

Humidity levels are equally important and keeping the seeds in the paper towel will keep the humidity levels where they should be. Keep the kitchen towel moist at all times and do not let it dry out. If you have been successful, it should take about two to four days for you to see until the radicle begins to emerge.

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It is best practice to place the moist kitchen towels between two clean plates. Doing so helps to stabilize temperature and humidity and block out any light. The plates should be face-to-face, with the germination towel in between. Once a cannabis seed starts showing signs of successfully germinating, you can easily remove them whilst leaving the others, which may not yet have germinated, undisturbed.

Direct Germination Method

Germinating “directly” is where you place the cannabis seed directly within a pellet or block of a medium of your choosing. You can germinate your seed within a soil or coco pellet, however, I would recommend choosing a one-inch rooting sponge or stonewool cube.

You can use a soil pellet, but the risk here is that soil already contains a certain level of minerals and elements that could cause an imbalance in your seed, affecting its development later on in life.

For seeds in their natural environment, there can be double, triple, or a hundred times more plants growing in the soil at any one time. From those plants, thousands of seeds are dropped for germination and of those thousands, only half may germinate, even under natural conditions.

We are trying to grow our seeds under controlled conditions and in much smaller numbers. The margin for error, therefore, is much smaller. Using a rooting sponge is an excellent alternative for germination as it eliminates any risk of deficiencies or toxicities you may otherwise experience when using a natural medium such as soil at this early stage.

The direct method of germination can be hard to control as you must wait until the seedling first shows itself out of the chosen medium to know whether it has been successful or not.

As the cannabis seed is buried within its medium, you cannot check on it during the process to see if it has begun the germination process. As a result, this process can take much longer than the methods already discussed.

If you are germinating “directly” then firstly you should moisten your medium by misting it with a spray bottle. The cannabis seed will then need to be carefully inserted into the chosen medium and be surrounded by its encasing environment to keep any light out.

Now that you have chosen your method and you have successfully germinated some seeds. What now? How do you know when you should transplant? If everything goes according to plan with your germination efforts, you will see the radicle/root tip of the cannabis seed breaking through the shell. This new root is the first sign germination has occurred. It is best to transplant each seedling when the radicle is around three times the length of the seed.

A rooting sponge is a perfect choice for transplanting as it is compatible with whatever medium or system you use later. Rooting sponges are also an excellent choice for those who are looking to sell their seedlings.

Rooting sponges and stone wool blocks make for more robust root systems. It can take longer for the roots to break through, but when they do, they will be stronger.

When you are transplanting the seed, it must be placed radicle first into its new home, quickly, gently, and precisely as it only has a minimal amount of energy to survive and develop into a seedling. Once your seeds are transplanted, they should go into a propagator, ready for the start of the growth phase of their lives. Your cannabis seed holds all the potential to give you the vibrant, robust, healthy plants, and bountiful yields you desire.

Taking the time and care to get your seeds off to a good start should be a no-brainer. Knowledge is power if you want to be a better grower, so think of the learning process just like a seed itself. Nurture it, cultivate it, and you will soon harvest success.

How To Germinate Cannabis Seeds

Growing cannabis from seeds is no more difficult than growing any other plant. It doesn’t take a magic touch or a green thumb, and it doesn’t require special knowledge of horticulture.

Growing cannabis from seeds is no more difficult than growing any other plant. It doesn’t take a magic touch or a green thumb, and it doesn’t require special knowledge of horticulture. For many reasons, growing cannabis plants from seed is a better, more reliable route to success than growing cannabis plants from clones, and the road to healthy plants yielding high-quality buds begins with the germination of the seeds.

What Is Germination?

If you’ve never grown any kind of plant before, germination is simply a term for the sprouting and initial growth of a seed. Every plant seed, though tiny, hard and dry in appearance, harbors a delicate plant embryo, water, and even stored food. All it needs is a jump start from you to sprout and begin its life, and there are several different methods for doing this. Each method can be successful, and you may decide to try one or two and see which technique brings you the best results. Think of it as a really fun science experiment, with the ultimate grand prize being a healthy, hearty cannabis plant.

Purchasing seeds online is the best way to get a good, reliable cannabis plant that will have the best chance of producing buds. You may find seeds in your regular product, but the chances are good that those seeds are either dead or dried out. Dry, old seeds are extremely difficult to germinate. Those seeds in your bag are probably pretty dark and dull looking, and that’s a sure sign that they are either dead, or old and dry. Healthy seeds bought online will look fresh and waxy, and that’s how you can tell that they are young, healthy and ready for germination.

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The Paper Towel Method

Wherever you live, the springtime is when you see incredible plant growth and new, green life sprouting up all around you. The key to successful cannabis seed germination is to replicate a spring-like condition for the seeds, inducing them to vegetate. This means that seeds should be moist but not soaked, and warm but not hot.

An easy way to accomplish this is by placing seeds between layered, moistened paper towels. It’s best to use real rainwater for this method, and if you live in a rainy area you can collect rainwater in any receptacle left outside. If you don’t get much rainfall where you live, you can substitute bottled, distilled water instead. Moisten the paper towels with the clean water, making sure that they are not sopping or dripping, and place the seeds between the layers.

Next, you’ll want to place the towel-covered seeds into a plastic bag. This creates a humid, warm atmosphere, like a greenhouse. You can also place the paper towels on a glass plate or baking dish and cover them with plastic wrap. Find a dark place in your home to put them while they are getting ready to germinate. A drawer in your kitchen or a closet shelf would make an ideal germination environment.

Check the seeds daily to make sure that the paper towels have not dried. When they begin to dry, simply pour more water on them and squeeze it out gently. Do not let standing water accumulate in the bag or plate you have placed them in. This process should take between five to twelve days. Sometime in that period, you will see the seed casing burst, and a small but strong root will emerge.

The Straight-To-Soil Method

Many growers believe that it is easiest and most natural to simply plant cannabis seeds directly into the soil in which they will grow and thrive. If you choose to use the soil germination method, remember that you should always keep the potted seeds indoors. Seeds planted outdoors will have very little chance of germinating, as the environment is too uncontrolled. The benefit to planting seedlings directly into the soil is that you will not have to transplant them after germination. The transplant process can be a shock to a young plant’s root system, and some people have difficulty nursing a cannabis seedling through this process.

For the soil method, you will need to purchase sturdy containers with drainage holes, potting soil, and a secondary plant fertilizer. Mix the fertilizer and potting soil together and fill the containers, tamping it down slightly. It’s best to start out with very small containers, no more than three inches wide. Moisten the soil with distilled water or rainwater, taking care not to drench it. Make a small hole with your finger approximately one and half inches deep, and place a seed into the hole. Try to position the seed with the pointed edge facing downward.

The containers with the newly planted seeds should be kept in a warm area indoors. A plant heating pad can be placed underneath the soil containers to help warm them, or you can create warmth and humidity by cutting plastic soda bottles in half and placing them gently over the containers, creating a greenhouse effect. It’s important that the seedlings remain undisturbed, so resist the temptation to uncover them to check if they’re sprouting. You should see plant growth sprouting out of the soil somewhere between seven and fourteen days, depending on the strain and age of the seeds.

An another great way to germinate cannabis seeds is to use a seedkit. For an excellent explanation of how to use the seedkit, go to Zambeza Seeds.

Alternative Germination Mediums

There are a few other substances that can be successful mediums for germinating cannabis seeds, and the technique used with any of these substances is the same as the soil method. Rockwool is a matted fiber material that is favored for its porous nature, and seedlings can be planted directly into it for germination. It can be purchased inready-made cubes for easy planting, and is readily available in home improvement stores.

Lava rock is another medium that has proven successful in germination and is notable for providing a large surface area for healthy root systems to grow. However, it does not hold water as well as regular soil or rockwool, and it may not be the best alternative for an inexperienced grower.

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