Planting germinated cannabis seeds is the method least taxing to your nerves. Click to read about how to plant germinated weed seeds like a pro! Curious how to plant weed seeds after germination? Planting cannabis seeds isn’t that difficult if you use our Step-by-Step guide for beginners! Cannabis seed germination is the first step of cultivation, and if we make a mistake in this first phase, any subsequent effort will be in vain. There are several germ…
Planting Germinated Cannabis Seeds The Right Way
Planting germinated cannabis seeds means making them crack and show the taproot between paper towels or in a similar setup, and then gently transferring them into the medium. Knowing your seeds are viable and alive gives you the peace of mind to patiently wait for the sprouts.
It’s possible to plant pot seeds the way nature intended: straight into the medium. However, planting germinated cannabis seeds is the method least taxing to your nerves and that gives you maximum control.
Planting Germinated Cannabis Seeds: Why And When?
For experienced growers, germinating marijuana seeds is something done almost on cruise control. However, first-timers may find this a nerve-wracking ordeal. They start to panic and make all kinds of mistakes. Nonetheless, germinating cannabis seeds before planting them has its benefits.
Why Germinate Seeds Before Planting Them?
Planting marijuana seeds after germination, not before it, is the least traumatic germination method not only for the grower, but also for the plant. When the seed is awakening, the conditions should be just right. Otherwise, you can run into problems:
- The medium can be made too moist, and this can lead to damping off and similar issues.
- After a couple of days, the soil begins to dry out, starting from the surface. If the seed hasn’t cracked by this time, it won’t crack at all due to the lack of moisture.
- If you plant the seed too deep, it can suffocate, especially if the soil is soaked with water.
- Some seeds take longer to sprout. Inexperienced growers lose their patience and begin to excavate, damaging the seed in the process.
Because of all this, it’s always safer to germinate your seeds first and then put them in the ground.
Best Soil For Growing Weed
When To Plant Germinated Marijuana Seeds
Suppose you’ve placed weed seeds between moist paper towels. The seeds may crack and show taproots after only 12 hours, but this usually takes longer – typically, a day or two.
You don’t have to rush and plant them as soon as you see that your seeds are alive and well. Provide a few extra hours for the taproot to become a bit longer – a half-inch (about 1cm) is okay, although more than an inch (2.5cm) is too much and should be avoided.
Planting Germinated Cannabis Seeds Step By Step
The whole process is actually very straightforward, quick, and seamless, but for your convenience, we’ve broken it down into separate steps.
How to Plant Weed Seeds After Gemination?
You have finished germinating your weed seeds, and it is now time to begin planting them. Planting weed seeds involves moving a seedling from a paper towel or small container to a larger pot. There are a few items you will need and tips to keep in mind.
Some people intend to grow cannabis plants indoors, and others want to do it outside. Below is a guide on how to plant weed seeds, which works for both methods. Follow these easy steps, and you will end up with quality cannabis plants.
What Do You Need for Planting Marijuana Seeds?
Some seeds may be tricky to plant and grow, but you do not need much regarding cannabis seeds. You will notice that many of the tools are already in your home. If you need to get any additional items, you can find them in a regular store or garden center. The list of equipment includes:
- Lightproof pot or mug. The first thing you will need is a lightproof pot of 1 to 2 liters to protect the seed from the light. It is important to find a pot or mug that is the right size. If the container is too big, then the young plant might not be able to absorb all the water in the soil. Of course, the roots will have trouble spreading out if there is not enough space.
- Tweezers. While some people choose to use their fingers, tweezers can make the planting process easier. They help move seedlings carefully.
- Potting soil. Next, get some potting soil that will benefit the seedling. One of the best options is a light mix for cuttings and seedlings. Growers tend to prefer a light mix because it gives them more control over the plant’s health.
- Pen or pencil. A pen or pencil from around the house is suitable for planting weed seeds. The tool is helpful when you need to make small holes.
- Plant sprayer. Many growers use plant spray to nurture indoor and outdoor plants. A plant spray uses water to help keep the leaves free of any dust or dirt that may get on them. Some people use one to keep the soil moist while protecting the seedling from too much water.
- Germinated cannabis seeds. Of course, the key item you will need is the germinated seed. Each pot will have one seedling.
Once you have everything you need, you can begin the process of planting your weed seeds.
How to Plant Cannabis Seeds in 4 Simple Steps
As beginners learn how to plant germinated weed seeds, they will find that the process is easier than expected. The planting stage only takes four steps to complete, and the results are healthy adult cannabis plants. The steps you should follow carefully are:
Step 1 — Fill a Pot or Cup With Potting Soil
Once you have the best pot or cup for your germinated seed, fill it with soil. After planting is done, the root system should always grow downward as the plant gets bigger. Therefore, you do not want to put in too little. The roots still need enough space to absorb nutrients.
Some cannabis growers may fill the cup about halfway before planting the young seedling. Adding more can be beneficial for the root system. Continue putting soil in the pot until you reach about 1 cm below the edge of the container. You can press the growing medium down lightly, but do not compact it. When you have the amount you need, you can move to the next step.
It is important not to add extra nutrients to the soil to keep the plant healthy. The potting soil already comes with the necessary amount of minerals a cannabis seedling needs to grow. The young plant is vulnerable to a nutrient burn, which causes leaves to lose the meat it requires and turn brown or yellow
Step 2 — Make a Small Dimple
After you are done filling the pot with soil, make a small hole for the germinated cannabis seed. Since the seedling is tiny, a clean pen or pencil can make the dimple the appropriate size. Place the writing tool on top of the soil and push it down to create the dimple. The depth of a hole matters for the growth of a weed seed.
The dimple should be about a couple of centimeters deep. If you are using a pencil, an easy way to measure is by making the tiny hole erasure-deep. Like any plant, you do not want to plant the weed seed too far in the growing medium.
The seed has enough energy to push through a thin layer. The farther down it is, the more likely the soil could hinder the plant’s ability to grow. It might not be able to get the light it needs, and the stem could become weak. If you believe you planted the germinated seed too deep, try brushing away some soil instead of repositioning the plant.
A shallow hole could mean the marijuana seeds will dry out. If you are planting seedlings outside, shallow holes could introduce the risk of them getting disturbed in some way. An easy way to ensure the pencil or pen goes down far enough is to put it next to a rule. You can mark the correct spot before inserting it into the soil.
Step 3 — Place the Cannabis Seed in the Dimple
The next step of planting a cannabis seed is to move it into a small hole. Gently pick up the plant and place it into the soil. Some growers prefer to use a clean pair of tweezers to transfer it over to the pot. It is critical not to squeeze too hard to prevent the germinated seed from getting hurt. Make sure to plant quickly to ensure the budding roots stay safe from excessive light.
Some growers use the damp paper towel method for the germination process. Sometimes, the newly-formed root of the seed can get stuck to the paper towel. The first instinct is to pull it loose carefully, but the action could potentially damage the plant. Instead, spray it with some water to encourage the root to let go of the paper towel.
When you place the germinated marijuana seed into the small dimple, make sure the root is facing downward. The root part needs to go deep into the hole as much as possible. The skin of the seed has to be at least .5 cm beneath the surface of the soil.
The positioning can help the top of the plant and its roots grow out correctly. The stem could bend and not develop properly, and the roots might sprout upward. The weed seedling might not turn into a healthy adult plant.
Step 4 — Cover the Seed With a Thin Layer of Soil
The final step of the planting stage is one of the quickest ones to do. All you need to do is cover the cannabis seed with a thin layer of soil. About a couple of millimeters should do the trick. The thin layer is enough to block out the grow lights or sun while giving the seedling room to grow.
You can lightly pat the soil to ensure that the plant can absorb the moisture correctly. However, try not to press down on it firmly once it is covering the young seedling. If the soil becomes compact, the weed seed might have a hard time getting enough oxygen. Not to mention, there might be a higher chance of disease from poor drainage.
Finish things off by spraying the surface with a plant sprayer to make the soil moist. Seeds need to remain moist, so you should frequently check the dirt to make sure it has enough water for healthy plant growth.
You can place the pot by the window sill or under a light. Wait a few days, and you will see the plant emerge from the soil.
FAQ About Planting Weed Seeds
Now that you know how to plant cannabis seeds in four easy steps, you might still have some questions about the details. Here is a list of frequently asked questions to answer some you might have:
What to Avoid When Planting Cannabis Seeds?
There are multiple things to avoid when you plant weed seeds. Common tips include not fertilizing or adding extra nutrients to the seedling. As mentioned before, the plants can be vulnerable to too high amounts of minerals.
Try not to cover the pots with plastic or create a humidity dome over them. Air needs to pass through easily, and a buildup of humidity may damage the plant. Besides avoiding the wrong soil, make sure it is not too wet or too dry. Whenever you water the seedling, make sure it does not have the wrong pH level.
How Long to Germinate Weed Seeds Before Planting?
Growers usually germinate cannabis seeds before they plant them. The germination stage is relatively short, and it takes an average of two to three days. Some weed seeds take longer than others due to multiple factors. The technique you used to germinate can influence how long it takes to germinate. For example, the recommended water method lasts roughly 18 to 36 hours for most seeds.
Not to mention, hard seeds may need up to a week to begin sprouting due to a thicker coating. If they have not germinated after two weeks, then they are likely a dud.
When Is the Best Time to Plant Weed Seeds Outside?
Weed seeds can grow indoors or outside, but growers need to pay attention to the time of year before planting outdoors. Cold temperatures can kill a cannabis plant, so you will need to place it outside as soon as winter ends. The recommended period is between April and mid-May. Seedlings require the entire growth cycle before temperatures drop again.
People often start inside before moving the plant outdoors. If you have young female plants, they can be fragile to the environment during the early stages. The seedlings should remain inside for two weeks, or until they grow strong enough to withstand a gust of wind.
What Soil to Plant Weed Seeds In?
The best choice of soil for marijuana seeds is a light mix. The light mix does not have a high concentration of nutrients, which can be detrimental to a seedling’s health. Young plants do not need as many nutrients as mature ones.
Beginners might also put seedlings in coco soil. Coco-based soil usually has enough nutrients to last a few weeks. Some cannabis growers prefer it because it is environmentally friendly.
How Deep to Plant Marijuana Seeds in Soil?
Burying a weed seed too far into the soil can negatively impact its growth. The recommended depth of the hole is 2 to 2.5 centimeters. It is the best length because seedlings have roots that are 1.5 to 2.5 centimeters long. A couple of centimeters ensures they have enough space.
The seed can easily break through the top of the soil without drying out. Again, placing a mark on the pencil can help you see when to stop pushing it down.
The Next Step After Planting Marijuana Seeds
Now that you have planted your weed seed, you are well on your way to growing a beautiful plant. When the time is right, you may want to transfer it outside. As stated previously, you will want to wait two weeks for the cannabis to become strong enough to withstand the elements.
If you need tips on growing outside and want to get started, you can use our step-by-step guide for growing weed outdoors. We also have a guide for growing weed indoors.
The most common mistakes when germinating cannabis seeds
Germinating the seed is the first step in any cannabis grow. It is the process during which the seed begins to develop, and the radicle emerges. There are several methods of germination and there are a number of common mistakes made in each of them, which can be easily avoided.
Here we explain what not to do during germination in each case, and we tell you that the method recommended by Dinafem Seeds is germination in Jiffy, as it is the simplest and has the lowest error rate.
Mistakes when germinating cannabis seeds in Jiffy
Jiffies are dehydrated peat discs, pressed into a biodegradable mesh which, when moistened, become tiny sacks of earth. Water is usually applied so that the wet discs swell and become mini containers of substrate where you can plant the cannabis seed so that it germinates inside the peat. What could go wrong with this method so that we don’t get to see the seedling emerging from the Jiffy?
- Adding too much water to the Jiffy: the disc must be moistened so that it swells, but it should not be drowned. The goal is to keep the soil in the Jiffy moist during the germination process, but never drowned. Some growers water the Jiffy too much, and more often than necessary, and end up drowning the seed because excessive moisture prevents the ventilation of the seed, stopping its germination.
- Covering the Jiffy so that it is too hermetically sealed: the Jiffy has to be protected, but some people shut it away in a germination greenhouse or Tupperware container with holes, increasing the moisture excessively, which leads to the growth of fungi.
- Burying the seed too deep: The seed should be about one centimetre from the surface. Although it is true that the depth of a Jiffy is not more than 10 centimetres, pushing the seed to the bottom of the Jiffy will make it difficult for the radicle to find its way out into the light. Just insert the seed with your finger, near the surface, and cover the tiny hole made when you insert it.
- Not providing it with the right light intensity: in the first germination stage, when the radicle begins to rise up, it is better to provide too much light rather than not enough, because light does not bother cannabis. Of course, in the case of the Jiffy, we must keep in mind that the light, whether from the sun or a spotlight, is linked to the possibility of drying out. So, even if it is good that the Jiffy has plenty of light, we have to make sure that this is not drying the soil too much.
- Subjecting the Jiffy to changing temperatures: changing the temperature for example from 25 degrees (indoors) to 5 degrees (on a terrace) will make germination impossible.
- Putting several seeds in the same Jiffy: these peat pellets are not big enough for several seeds. We should use one for each seed we want to germinate.
- Keeping the seed in the Jiffy for too long. As soon as the seedling has a pair of cotyledons, it must be transferred to the substrate. The Jiffy is small and can only be used for so long before space must be given to the roots to grow in the pot or in the soil.
Mistakes when germinating cannabis seeds in damp cotton wool or paper
The method of germination in damp cotton wool or paper consists of moistening these materials and wrapping the seeds in them. In this case, it is advisable to put these wet fabrics in a germination greenhouse or Tupperware container with holes for ventilation, so that the temperature remains the same throughout the process. So where could we go wrong in this case?
- Letting the radicle grow too much: if the root becomes too long, it will probably end up getting caught up in the cotton wool or paper and will then break when detached from them before being transferred to the substrate. To avoid this, we need to do two things. First, don’t let the root get too long. As can be seen in the photos, the radicle grows very fast, so we have to put it in the soil when we see that it has grown in a certain direction (we can see that it either grows in a straight line or it adopts a more curved shape). Second, do not use pure cotton wool or kitchen paper, but rather cotton fabrics such as rags or pieces of old T-shirts.
- Exposing the seeds to changing temperatures: if we keep exposing them to different temperatures, seeds will not germinate. We must ensure that the place where we put them is warm, between 25 and 28 degrees Celsius, and that this temperature is kept stable until we transplant them to the substrate.
- Leaving the root in contact with the air for too long: left in contact with the air the root will oxidise, which will in turn kill the plant. When the root begins to grow, it is best to transfer it to the substrate immediately. Or, failing that, keep it well covered with the wet fabric.
Mistakes when germinating cannabis seeds in substrate (in a pot or in the ground)
Planting the seed directly into the pot or the ground where we plan to grow is another option for germinating the seed. Let’s have a look at what is usually done wrong in this case, leading to the cannabis seeds failing to germinate.
- Burying the seed too deep: the seed should be one centimetre below the surface and not any deeper. As a general rule for seed germination and cultivation, it is recommended to plant the seed at a depth equal to twice the size of its diameter. It is enough to cover the cannabis seeds, which are small in diameter, with just a little soil.
- Over-fertilising the substrate: the soil where the seed will germinate should be porous and light in nutrients. The substrate used for a flowering plant is not the best choice to germinate a seed, because a marijuana ‘baby’ cannot assimilate the same amount of food as an adult marijuana plant. So, let’s be sparing with the diet in the soil where we have placed the seed to be ‘born’.
- Using a soil with an unknown composition: the soil from the park near our house, or from the vegetable garden of the house in the village are not the best options for germination. It is important to know the composition of the substrate where we are going to plant the seed. And when we take soil from somewhere else, it may contain many minerals, or many nutrients, or a lot of fertiliser, and if we have not bought it in a bag where its ingredients are listed, we will not know its composition. So, it is important to use a substrate whose composition we know, especially for this first step in growing.
- Watering too much: a substrate that is too wet, especially in the case of autoflowering seeds, can be lethal for germination, and for the seedling’s first few weeks of life.
- Putting several seeds in the same pot: unless it is a very large pot, let’s give each seed its individual space so that the roots have enough room to develop. If we put several seeds in a 14-litre pot, for instance, some seeds may end up hindering the development of the others.
- Planting the seed directly in the ground where the climate is not appropriate: if the weather is too cold, too hot, too dry, or too wet it will be difficult for the seed to germinate. Since we do not control the environmental conditions in an outdoor substrate, changing weather conditions can easily hinder the germination of the cannabis seed.
Mistakes when germinating cannabis seeds in water
This method consists of putting the seed in a container with warm water and waiting for it to germinate in the days following immersion.
- Leaving the seed in the water for too long: as soon as it has germinated, and we see that the radicle has emerged, the seed must be transferred to the substrate. Water can be used to germinate it, but never to grow it. So, as soon as we have achieved the goal of placing it in the liquid, we have to take it out of there and provide it with the substrate it needs to survive.
- Overdoing the dosage of hydrogen peroxide in the water: if you want to include hydrogen peroxide to prevent fungi or bacteria during germination, you have to pay attention to the concentration. Overdoing the amount can prevent germination.
Common mistakes of any germination method
- Breaking the radicle while trying to separate the shell from the bulb. Being very invasive in the germination process can be lethal to the seed. Once it has germinated, the seedling will generally eject the seed shell itself, so we should leave the seed to do its job. We recommend intervening only if it is really necessary, and we see that the plant is growing upwards and that the shell is still attached to some of its parts.
- Handling the seeds, radicles or seedlings with dirty hands. We don’t know what type of dirt we might be carrying on our hands without realising it, so we should always wash our hands before carrying out any of the germination processes. This hygiene also applies to each of the tools that are in contact with the seed during the germination period.
- Using dirty water. It is important to use clean tap water at all times.
If you have made other mistakes not described in this post, please share these in the comments section. The growing experiences of some are usually useful to others.
And please, don’t hesitate to ask us any questions you have about cannabis seed germination.
Jásminka Hi, I’m Jásminka, from Dinafem Seeds, and I spend the whole day surrounded by Dinafem Girls. I’m an eager journalist, who lives with the phone glued to my hand, always trying to keep up with the frantic pace of the cannabis world. When something grabs my attention: I ask, listen, write and tell you all I find out on this blog.
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