Figuring out how to germinate weed seeds isn't that hard, but choosing the right method can determine exactly how high your success rate is. Many cannabis consumers have found an occasional seed in their bag of marijuana. But can you actually use them to grow your own weed? Learn more about germinating bag seeds and turning them into flourishing cannabis plants. After trying and testing with our own strains as well as asking top breeders for advice on how to germinate weed seeds. Here you'll find the top 2 BEST methods.
How to Germinate Weed Seeds – Tips and Methods
Germinating cannabis seeds isn’t a complicated process, although it does require a few specific parameters in order to happen successfully. If you’re reading up on how to germinate weed seeds, you’re in the right place; it’s a relatively easy process, you just need to have some patience on hand. The first thing to keep in mind is that your seeds are going to need water, heat and air in order to germinate.
How to Germinate Weed Seeds – Basic Parameters
Moisture is one of the three elements required to successfully germinate cannabis seeds; it essentially helps the seeds to expand and therefore break their shell. Over-watering at this stage can be fatal for your seeds, although harder-shelled and older seeds can take longer to soak through, so some patience is required.
This can be the hardest thing to work with, because temperatures that are either too cold or too hot will mess with your seeds and they won’t germinate. Springtime temperatures are generally what you should be aiming for – seeds can still germinate in colder temperatures, although they can take longer.
How to Germinate Weed Seeds – Germination Methods
There are many different germination methods that growers tend to use, all of which involve water and heat, although they’re not all as effective as others. Some people prefer germinating by planting straight in the ground, using starter cubes or by letting them soak overnight, although our preferred and recommended method is the paper towel method using either plates or an opaque kitchen container. We’re going to give you a brief rundown of the other methods, alongside their pros and cons.
This method is more reliable than others, and they make germinating quite easy. All you have to do is place your seed carefully in your seed plug and follow the instructions when watering; different brands and models have different watering instructions.
Some cubes are made out of peat and soil, and you can move them straight into your flowerpot once they’ve popped. However, hydroponic growers can use rockwool cubes which can hold quite a lot of moisture.
One of the downsides to using starter cubes is that they’re not very handy if you only want to germinate one or two seeds, because they’re usually sold in packs of 50 or more, and once they’ve been opened most cubes tend to dry out within a couple of weeks. Another downside to Rockwool specific cubes is that they’re bad for the environment, can be bad for your health when inhaled, and they’re not the best method for new growers.
Other growers prefer to get rid of the middle man and plant their seed straight into their first flowerpot – it’s essentially how it would be done in nature, so why not follow the natural order? One of the pros when it comes to planting straight in your growing medium is that you don’t have to stress out your little seedling when transplanting, although it can be a bit harder to get the humidity right and you need to bury it just the right amount so that it can sprout.
We highly advise against using this method, as it’s incredibly easy to accidentally drown your seeds. This method involves soaking your seeds in a glass of lukewarm water – it can be any type of cup, although people usually use a normal glass. This method can be effective for much older seeds or for seeds that have abnormally thick shells.
There are a few myths surrounding germinating in water overnight – some people say that if your seeds sink, they won’t germinate, however the truth is that most seeds start off by floating and then as they soak, they sink to the bottom of the glass. This has nothing to do with germination indication.
How to Germinate Weed Seeds – Paper Towel Method
This method is the method we recommend all readers and customers use, as it’s the one that has proven to give us the highest germination rate. We’re going to give an in-depth step by step guide on how to use this method. Keep in mind that you can skip the rooting hormone part if you prefer all natural results, although X-Seed does provide impressive results to start with.
Material Needed to Successfully Germinate seeds
- Kitchen paper
- Opaque plastic Tupperware or two plates
- Viable cannabis seeds
We’re going to go through the X-Seed method – if you want to skip this, you can simply skip the steps involving X-Seed and place your seeds straight into your paper towel as stated in step 4. Before you start, make sure you have everything you need at hand, so that you don’t have to waste any time looking for stuff. Find the best strains at our Cannabis seeds – Buy Marijuana Seeds section.
Step 1: Soak the seeds
Submerge your seeds in your B.A.C. X-Seed liquid for an hour. Give it a stir every now and then so that the seeds are thoroughly soaked.
Step 2: Germination
While your seeds are soaking, you’ll need to prepare your paper towel and plates (or opaque Tupperware). Make a makeshift “bed” on the bottom plate with damp kitchen paper, but make sure it isn’t soaking. We tend to use 3 layers of kitchen paper; wet the paper and let it dry without wrinkling it, hanging it out kind of like a t-shirt so that all of the excess water can easily drain out. No need to worry about drying it, as you want the kitchen paper to be damp.
Step 3: Separation
After your seeds have been in the B.A.C. X-Seed liquid for an hour, by using a spoon you can carefully extract the seeds from the liquid and spread them evenly across the bottom of your plate or container. An even spread is important, so as the roots of each seed do not get tangled – about an inch apart is good.
Step 4: Cover the seeds
Once you have all of your seeds nicely placed on your plate or in your container, cover the seeds with another layer of damp kitchen paper, similar to the first layer that you put on the bottom. At this point, your seeds should be completely covered.
Step 5: Take care
Once you’ve finished covering your seeds with paper towel, cover them with another plate or put the lid on your container; if doing this in a container, the paper shouldn’t dry out as fast. A mistake made by many growers is that they add too much water to their paper towels if they’ve dried up, but by using a spray bottle you can moisten it some more without overdoing it. If your container is transparent, all you have to do is line the inside so that absolutely no light can get in.
Step 6: Temperature adjustments
Once you’ve isolated your seeds from light, you should leave it somewhere with a nice, neutral temperature. During winter it’s often harder to find a good spot, so you should try and find a heat source that isn’t excessive. You can use a computer modem, or even a softly powered electric blanket. Items like play-stations can get too hot and could end up cooking your seeds, so take care where you put them.
Step 7: After care
Once your seeds open up, they’ll shoot out a small, white root. This means you need to be extremely careful when handling them. Don’t leave them for long because once they’re open they should be moved to soil.
Step 8: Moving to soil
Now that your seeds have officially germinated. Now you need to move them to the medium in which they will remain for the rest of the growing process. Germinated seeds usually grown in soil, but rockwool for hydroponics is also a good option growing. Or even a coco jiffy if you want to cultivate in coco coir. In this article we’ll be dealing with the most common method: planting seeds in soil.
How to Germinate Weed Seeds
Start by filling a small pot with soil, no more than half a liter. Water it before even thinking about planting your seed. Once the soil is damp enough to weigh down the plant pot, use the tip of your finger to create a small 0.5-0.1 cm hole in the middle of the soil, and deposit the seed in the hole with the root facing downwards. Then, cover the seed with a little soil so that it’s just under the surface. The last step in this process is to put your plant pot in the sun or under your lamps (wherever you’re planning on growing it). Within a couple of days you should see that first sprout, that will keep on growing right until the end. In some cases, it may even take a matter of hours.
Keep an eye out on our follow up article on soil preparation for growing cannabis.
How to Germinate a Bag Seed
F inding a seed in your bag of weed used to be regarded as an insult, an indication you scored some inferior product. But it’s a new millennium, and growing cannabis is perfectly legal in some states and territories. While buying seeds online is still recommended for reasons we will detail further, finding a healthy seed can be as valuable as an ounce of gold. Or at least the cost of the bag.
- Can You Tell if a Cannabis Seed is Male or Female?
- How to Store Marijuana Seeds Properly
- Feminized Cannabis Seeds Explained
- How to Start Seeds
In this article we review the steps to germinate cannabis seeds, tips and tricks in the process, and how to keep your seedling healthy.
Germinating a seed is the first step in the growing process, and a cannabis seed will sprout with a voracious hunger, so if you are about to germinate seeds, start thinking ahead about where the seedling will eventually be moved to. This includes lighting, ventilation, and something to feed the lady. Those things don’t need to be decided before you begin, but try to have a plan in place by the time the second set of leaves emerges — as soon as two weeks.
The Germination Process
Begin by soaking the seed overnight. Soaking the seed saturates it with moisture, and moving it shortly after to a warm home tells the seed that it’s someplace comfortable, and it’s time to grow. Tap water is fine for this, but a micronutrient solution like liquid seaweed may be included.
Once your seed has soaked, the most common method for germination is the “paper towel method.” Wet a piece of paper towel and wring dry, then fold in half. Place the seeds between the halves of the damp paper towel, and slide the whole thing into a ziplock bag. Seal with some air inside. Leave this bag someplace comfortably warm for about a week, checking frequently for spots of mold. After about a week, a taproot should emerge.
Then it is time to transfer the seed into a proper growing medium. Be careful plucking your seed from the paper towel!
A grow medium is the “stuff” the seed will sit in. The easiest option is soil, healthy black earthy scooped up from your yard, or potting soil purchased from any garden center. Rock wool cubes are a common option for hydroponic growers, but can later be transplanted into soil as well. Compost and worm castings are great for a seedling, but it will need to be transplanted into a more diverse mixture later.
It is far too early to begin any nutrient cycle, or to introduce any fertilizers to the soil. Now that the seed is confirmed as alive, and placed into a more comfortable medium, simply make sure that the seed is watered and warm.
The first set of leaves to emerge are called “sucker leaves,” and their sole purpose is to drink in as much light as possible to fuel the growth of the more recognizable serrated leaves, which will begin to grow over the next week. After that you’ve got a proper seedling, and in a few weeks it will be ready for a bigger home!
For further guidance and resources about growing cannabis, see our Beginner’s Guide to Growing Marijuana, or our guide to growing for personal use.
Cultivating a Healthy Cannabis Seedling
The seedling that emerges will be as tender as an infant, and susceptible to diseases and cross-contaminations, so keep your germination station as sanitary as possible, and wash your hands before handling them. Avoid rubber or latex gloves at this stage as they have too much grip, and one wrong movement of your finger could accidentally grab and tear the soft plant material.
A seed’s health may be fortified by soaking it with a solution rich in micronutrients, like liquid seaweed. Be advised, however, that these will be very diluted solutions. Carefully read the mixing instructions of any product you purchase.
Seedlings can be protected against certain diseases by including worm castings in the medium. Research out of Cornell University has shown the microbial life in worm castings colonizes the seed’s surface, making it more difficult for pathogenic microbes to establish themselves.
Disclaimers and Downsides Regarding Found Seeds
It’s worth pausing to remember that seeds shouldn’t wind up in your bag of cured, smokable cannabis. So before planting anything, let’s assess what this seed is, and how it got there.
Only female cannabis plants produce flowers, and if they are pollinated by male plants, then they produce seeds instead. So all the cannabis we smoke is from unpollinated female plants — or nearly all of it.
When female plants are stressed — for instance, by drought conditions or nutrient problems — an evolutionary alarm can induce them to produce seeds with only their DNA. The problem with these “hermaphrodite seeds” is that the offspring, having benefited from this process, will be more prone to repeat it. If this is how a seed got in your bag, it can result in seedy weed, even under the closest care.
A seed is not guaranteed to sprout at all. Examine the seed for any obvious health issues. Immature seeds are lighter greys-to-green, while mature seeds are darker tan, brown, or even black. A healthy shape is a teardrop or nearly round, while bunk seeds will appear shrivelled or irregular. Finally, healthy seeds have a hard, whole shell, while cracked or brittle shells will likely not sprout, or produce a less healthy seedling.
A found seed is also not a guarantee to produce a replica of the strain you smoked, and may present latent traits from the strains it was bred from. Cultivating a complete copy of a phenotype is called “cloning,” and the cloning process must begin with a living plant, not a seed.
Remember, it could also just result in a male plant, which won’t grow any buds. None of this is guaranteed to happen with a bag seed, it’s just more likely than with a stabilized seed from a producer.
If you want to germinate a seed you’ve found, begin by soaking it overnight in water to saturate it, and soften the shell. Micronutrient solutions can be mixed in at this stage to fortify the health of the seedling (if you do, be sure to read the mixing instructions on the label).
The “paper towel method” is the most accessible way of germinating almost any seed. Once a taproot has emerged (after about a week) plant the seed into a small container with your chosen grow medium, like soil. Do not fertilize at this stage, as the seed and resulting seedling are very tender, and concentrated fertilizers are abrasive chemicals. Within another week, “sucker leaves” will sprout, synthesizing light to produce further growth.
Remember, found seeds are not always healthy or even viable. A healthy seed has a hard, unbroken shell and a dark color, while brittle or misshapen seeds may not produce a healthy plant, if anything at all. A found seed is also not guaranteed to replicate the precise phenotype of that cannabis you found it in.
That said, it’s almost always worth trying, and experimenting with whatever results. Growing cannabis can be an enriching experience, and perhaps even save you some riches. As long as you know what to look for from a seed, and how to handle them, finding one in your bag could be a golden ticket.
How To Germinate Weed Seeds
If you are looking how to germinate weed seeds you have come to the right place. After trying and testing with our own strains as well as asking top breeders for advice on how to germinate weed seeds, we have come up with this guide on how to germinate seeds using different but efficient techniques.
How to germinate weed seeds #1
The first method regarding how to germinate weed seeds is using paper towels or cotton wool. Just like in primary school when you were learning how to germinate seeds, even though they were beans, you put the seed in moist cotton wool or in a moist paper towel. You can put the cotton in a container and leave it somewhere dark and moist and they should germinate in 24-48 hours. The same thing goes for the paper towel technique. It is critical to germinate weed seeds that the cotton/ paper remains moist, but not wet.
How to germinate weed seeds #2
The second method regarding how to germinate weed seeds is using a jiffy plug. This little peat plug is really easy to use and it is very effective to germinate any seeds. The first thing you need to do is leave the plugs soaking in water for half an hour. After you have done this, the plug should have swelled several times its size and now you need to squeeze out the excess water (make sure it remains moist). Now put the weed seed inside the plug, about 1cm deep and leave them somewhere dark and moist.
After 24-48 hours the seeds should have germinated and now you have little weed seedlings that need warmth and moisture. If you are using the first technique regarding how to germinate weed seeds, you can put the seedings in soil, about 1 cm deep then lightly cover with soil.
If you are using the second technique regarding how to germinate seeds, you can leave the seedling to grow in the plug and then you can repot once the tap root sticks out of the bottom of the plug.
How To Germinate Weed Seeds In Winter?
If you are wondering how to germinate weed seeds in winter, the method does not change from the two techniques on how to germinate weed seeds. You would need to keep the seedlings warmer and begin to grow the plant indoors until the weather is suitable enough to bring the plants outside. Or you could also grow the plant indoors. For more information on how to germinate weed seeds or any other cannabis seed related topic, take a look at our Frequently Asked Questions section!