First-time cannabis growers have a plethora of questions when it comes to the first phases of marijuana cultivation. Even though growing marijuana plants is We know D.C. Get our free newsletter to stay in the know. If you love City Paper , get it every day in our newsletter. Hopefully all of you aspiring growers have been able to get your seeds 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!
How Deep Do I Plant Pot Seeds?
First-time cannabis growers have a plethora of questions when it comes to the first phases of marijuana cultivation. Even though growing marijuana plants is not much different from growing other plants (since every plant needs soil, light, nutrients, and water in order to thrive), the difference is in how much of these factors the cannabis plant needs.
In order to end up with a good Sativa, Indica, or hybrid marijuana strain, growers need to take into consideration the unique requirements that each strain needs.
To help you become more confident and informed when you set out to start marijuana cultivation, we’ll get into the subject of germination and planting of cannabis seeds, providing you with everything you need to know in order to grow Marijuana.
Tips Before You Start With the Germination of Marijuana Seeds
There are a few things you’ll need before you begin germinating seeds:
- Get high-quality seeds from a reputable seed bank.
- Keep your marijuana seeds under a specific temperature for germination that should be about 72 degrees Fahrenheit (22 °C).
- Keep your germinating seeds away from direct sunlight (don’t keep them on your windowsill or near a heater since they will get dry, and seeds need moisture).
- For the germination stage, you’ll need jiffy pellets or starter plugs that are designed specifically for germinating weed seeds.
- For indoor cultivation, you’ll need grow lights that will be used after you plant the cannabis seeds in pots.
Guide for Planting Cannabis Seeds
In order for the marijuana cultivation process to result in a harvest, the marijuana plant needs to go through 4 stages: germination (3-10 days), seedling (2-3 weeks), vegetative stage (3-16 weeks), and flowering (8-11 weeks). The first and second stages are the most crucial when it comes to planting pot seeds.
The first stage (germination) begins when the dry cannabis seed is placed in water until it sprouts. Some seeds may germinate, while others may not, depending on the quality of the seeds. Good cannabis seeds should be brown in color and should feel hard and dry to the touch.
Transplanting (Planting the Seed)
Once your seed has sprouted, it’s ready to be placed in soil so that it can start growing. Its taproot will grow downwards, while the stem grows upwards. As the plant grows, two cotyledon leaves grow out of the stem these take in sunlight to help the plant grow healthy and stable.
Germination: The Wet Paper Towel Method
This germination method includes germinating your seeds with damp paper towels and has been a tried-and-tested method for germinating seeds. Two pieces of paper towels are soaked in tap water and the seeds are stored between the sheets. Additional water is added over the next few days to keep the seeds moist.
Sprouting times tend to vary, but the seeds will generally take between two and four days to sprout, and if they take longer it’s best to throw them away, as they probably aren’t viable. After a few days, tiny roots should appear, and that is an indication that the seed is ready for planting.
Germination: Soaking Seeds in Water
Another method for germinating cannabis seeds that works well with harder seeds is the soaking method. This method requires you to place the seeds at room temperature tap water and keep them soaked for 32 hours.
After you’ve put the seeds in water, some of them will sink to the bottom. These seeds are viable. The non-viable seeds will float, and they need to be thrown away. After 32 hours, you can use the paper towel method on the seeds that sank, and after they sprout, you can plant them.
Planting the Seeds Directly
This is a harder germinating technique and one that isn’t recommended for first-time growers. In order for it to work, growers need to be informed about the plants’ required nutrients, humidity levels, and the appropriate pH soil levels that are needed.
For this type of seed germination, you’ll need to plant the marijuana seeds in moist soil, about an inch deep. You’ll also need to have some additional heating system to keep the plants warm for the first few days. Even though planting the seeds directly may not be the best option for novice growers, it does have its benefits, like not risking breaking the taproot off when you’re transferring the plant to another pot.
Transplantation of Germinated Marijuana Seeds
After germination, you can plant the germinated seeds in a pot. Remember that the cannabis seedlings and its taproots are fragile in this early stage and you need to handle them with care, so it might be good to use tweezers when you do this.
Fill small pots (2 inches) with potting soil that is loose and moist to the touch. The pots should be filled ¾ of the way. Make half-inch pre-drilled holes by using your finger, and carefully place one sprouted seed in each hole.
Cover the seed with soil, spray it with water, and refrain from pressing the soil. It will take about one more week for the germination process to conclude, after which a stem will surface, and the taproot will produce secondary roots.
The best soil for sprouting cannabis seeds is a seed starter with only a little bit of fertilizer, as cannabis seedlings need loose soil in order to grow easily. For hydroponic cultivation, you may want to germinate in rockwool cubes because they retain moisture better.
Replanting for Healthy Growth
Young plants need to be planted in smaller pots before they’re replanted into bigger containers, so that they can grow a stronger root system. That’s because small plants that are planted in bigger pots may find it harder to get oxygen when they’re surrounded with too much growing medium, which can result in stunted growth.
It’s best to replant your cannabis plant as it outgrows its pot. Avoid leaving your plant in a small pot for too long as that can result in you having a “root-bound” plant (the roots grow too large for the pot and the plant can asphyxiate and die.)
Some growers will directly plant the seedlings in the final container. However, this is not recommended because it will be harder for the plant to get oxygen when it is surrounded by too much growing medium. On the other hand, if you find that your plant absorbs water within a day, it might be time for a bigger pot.
If the thought of transplanting your weed seeds sounds tiresome and challenging for you, then you can always plant directly in the final container. But do expect slightly slower growth, and make sure you are careful when watering the plant so as not to give it too much water.
Cannabis plants require specific conditions in order to thrive and produce a good harvest. However, taking care of marijuana seeds isn’t as hard as you may initially think. Planting these seeds is similar to planting any other seeds when you’re gardening fruits and vegetables. All you need to know is how to properly germinate and transplant your young plants. With a bit of knowledge and practice, you’ll be well on your way to becoming a seasoned cannabis grower.
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Hopefully all of you aspiring growers have been able to get your seeds so we can move to the next step: germination.
Take great care handling seed and seedling. Most flower and vegetable seeds are simply planted directly in the soil, but because of the value of cannabis seeds, germinating seeds prior to planting is encouraged. Growers can achieve a much higher survival rate by germinating in a non-soil medium and then transferring the seed to soil once the tap root has emerged from the seed.
Here is one of the simplest and most successful methods: Put a double layer of paper towels on a dinner plate, then thoroughly soak the towels with water and tilt the plate to drain off the excess. Place your seeds on top of the wet towels and cover with another double layer of soaked paper towels. Be sure excess water is drained off—you don’t want the seeds to be swimming.
Cover the plate with an upside-down plate or pot lid. A plastic bag or plastic wrap also works. Don’t make the seal tight—you want to leave some openings to allow air flow.
Keep the germinating seeds away from direct light. For best results, keep them at about 75 degrees Fahrenheit. A radiant heat source, like a heating pad, helps expedite the process. If you’re using a heating pad, be sure to keep the heat setting on low and place a folded hand towel between the heating pad and plate: Direct contact between the plate and heat source can cook your seeds.
Under the right conditions, seeds usually open in one to five days, so check them daily. Do not allow the towels to dry, and add water as needed to maintain moisture. Some seeds can take as long as 10 days to germinate, but if seeds have not opened within 10 days, they are not viable.
When the seeds open, the first thing to emerge is the root. Once the root sprouts it can grow quite fast.
When the root grows to a few millimeters in length, the seed is ready to be transferred to soil. Always take great care not to damage the tap root when handling. The best soil to use for a sprouting baby ganja plant is a “seed starter” or “seedling” mix. These are light neutral blends with very little fertilizer. Heavily fertilized soils will kill seedlings quickly, and cannabis seedlings prefer loose, aerated soil that their roots can easily penetrate. A bag of good starter soil is easily identifiable: When you pick it up, it should feel light and fluffy. Soils that are heavy and compact are not good for seedlings.
Now, on to potting (no pun intended). A healthy seedling will be ready for transplanting into larger container, with richer soil, in about a month. A 16- to 20-ounce container is ideal for a seedling’s first home (many growers use a Solo cup). The container must drain, so punch some holes if needed.
Fill your container with pre-moistened soil and create a hole about a half-inch deep for your seed. The tip of a pencil works well for making the right sized hole. The seed should be about a quarter-inch below the surface.
Place your germinated seed, root down, into the hole and cover lightly. Do not pack the soil on top of the seed; a light protective layer of soil is all that is needed.
Once they sprout in one to three days, new seedlings will need lots of light, and fluorescent grow light works best. Give your baby ganja plants 16 hours of light per day.
It’s very important to have a breeze on your plants immediately. A fan placed at the proper distance and speed should create a breeze just strong enough so your plant “dances,” but not so strong that it’s bent in one direction.
Without a breeze, indoor ganja plants won’t receive the stimulus needed to develop sturdy stems and branches, which the plant will need to bear the weight of big, sugary buds.
The Potanist is written by Bud Baker and Herb Green (yes, those are pseudonyms; yes, they are real people). Reach them at [email protected]
Graphics by Stephanie Rudig
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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.