Germinating Autoflower Seeds

Have you made up your mind to purchase some marijuana seeds? There are some industry-leading seeds with germination guarantees. However, buying quality seeds is not enough. The germination process is a major factor in the success of your autoflower seeds. There are around 402 auto-flower seeds, and we will provide all the resources you’ll need to grow your gorgeous, therapeutic marijuana plants from autoflower seeds.

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What Do Cannabis Seeds Look Like? Anatomy of Cannabis Seed

Since autoflower germination might take up to 10 days, you will need more information about the seed to ensure proper care and monitoring. The first step is to study the structure of the cannabis or 420 autoflower seeds. The dark brown, rigid, and frequently striped shell of the cannabis seed serves to preserve the very delicate contents inside.

It is also important to choose those seeds that will give you a plant that meets your expectations – indica for deep relaxation, or sativa for an energy boost. There are also seeds for beginners and advanced growers. There are those seeds that are better suited for indoors, and there are others for the outdoors. All this must also be taken into account before choosing seeds to grow, for example, here there are different types of autoflower seeds.

For a seed to germinate, it must first be hydrated, which softens the seed coat and makes it possible for water to enter the embryo.

Keep in mind that too much water will kill the seed. Therefore you need to monitor the humidity to avoid drowning it. Once the shell has softened enough, you may remove the radicle, and you can see the white taproot gently emerging; at this point, it is time to plant the radicle.

Once the seedling has emerged, the cotyledons, the small, spherical leaves, are visible above the shell. Until the first genuine leaves develop, the plant relies on those leaves for sustenance. In addition, there is no one correct approach to germinating marijuana seeds. As long as the right circumstances are maintained, the seeds will sprout regardless of your method.

What Are the Conditions for Germinating Autoflower Seeds?

Keeping the right environment for your cannabis seeds to germinate is just as important as keeping the right environment for the rest of your plants after they sprout.

Cannabis plants are very adaptable. They need less-than-ideal settings and will still grow, although this might reduce harvest quantities or quality.

Growing cannabis under less-than-ideal circumstances may still result in growth but will hurt the crop. But germinating auto seeds in unfavorable settings will lower the odds of sprouting and may result in the death of your seeds. Optimal conditions for growing autoflower seeds include temperatures between 21 and 26 degrees Celsius and humidity levels of 90 percent.

Germinating Old Autoflower Seeds

Cannabis seeds three years or older are considered old, but it doesn’t imply that you can’t grow a crop from them.

Seeds have three to five years of shelf life if you maintain them correctly. However, their viability and germination rate decreases every year. Over time, the seedling within the seed loses its hydration, shrinks, and becomes progressively weaker until it is finally dead and can’t be brought back to life by any amount of liquid.

Like conventional seeds, old autoflower seeds need to soak in water for a period. This will soften the seed shell and allow moisture to enter the seed. It will provide energy to cells, eventually shattering the shell and pushing out the tap root.

Typically, seeds will sink within a few hours. If they don’t, they may be destroyed after another day or two. Water surface pressure will keep even the healthiest seeds afloat, so you can gently push them down. If they don’t sink, then they’ve gone bad. 

Most autoflower gardeners soak their old seeds in water for 24 hours before planting them in soil or a growth media, but keeping them in the water for too long might be detrimental to the seedlings.

Seeds are readily stressed throughout the germination process. So, keeping an eye out for environmental factors that might reduce your crop yield is important.

Tricks for Germinating Old Autoflower Seeds

The Ideal Temperature

Marijuana seeds can blossom without human intervention and sprout across a broad temperature range. While an ambient temperature of 27 degrees Celsius is ideal, a few degrees difference won’t hurt the germination rate either way.

As with air temperature, the ideal soil temperature is approximately 25 degrees Celsius. However, a little deviation from that range won’t have much of an impact on the germination process.

You can get a heating pad to warm your growth medium if you live in a colder climate. Also, use fans or an air conditioner if you live in a warmer one.

Soil Moisture 

Your seed needs a particular quantity of water for the autoflowering germination process. Water also stimulates a seedling to begin the developing process. To germinate, you must submerge the cannabis seeds in clean water. You may use tap water after making sure that the pH level falls between 5.6 and 6.2, or you can use distilled water instead.

There is a limited quantity of nutrients in the seed, and adding more might stunt the development of the new plant during the critical germination and early growth stages.

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Preparing the Growing Medium

It is best practice to flood a growth medium to saturation before planting a seed in it and wait until it has dried before planting another seed. Autoflower seeds may be germinated in almost any growth medium, provided the pH level is not too high or low.

Once you have planted the seed in the growing medium, keep it moist but not soggy. A soggy environment encourages the fast growth of germs, which may kill the seedling.

Methods for Germinating Autoflower Seeds

Planting Autoflower Seeds in Soil

Sometimes the simplest solution is indeed the best. Your seeds may sprout in whichever medium you choose, just as they do in nature (soil, coco coir, perlite, etc.)

Grab a stick, dig a hole about a centimeter deep, and drop in one autoflower seed. Wet the medium well without letting it overflow, then cover the seed with dirt without pressing down on it.

The easiest approach to keep your cannabis plants from being stressed from transplanting is to put them immediately in their final container. Transplanting a seedling requires time for readjustment and may be stressful for the plant. When it comes to auto-flowering plants, speed is of the essence. Don’t bother transplanting them; just use a big finishing pot to plant the seed or the sprout it has produced. Since the seedling is already in its permanent location, there is less risk of injury during transplanting or shock when utilizing this approach.

 A Paper-Towel-Based Method for Germinating Autoflower Seeds

Water will soften the seed’s shell and stimulate the seed embryo during germination, which involves waking up the cannabis seed. Water activates the embryo’s development and growth.

The First Step 

Half-fill a little glass jar with clean water. Use filtered, bottled, or distilled water instead of tap water. Now that the glass is out of the way, you may open your seed packet.

You must carefully pour the whole contents of the seed packet into the glass of water if you buy a tiny seed pack. We suggest you spread the seeds from your seed packs throughout numerous glasses, with little more than a few seeds in each cup.

The Second Step

When you’ve dropped your seeds into the water, you may leave them to soak for as long as a day. In time, water will seep into the cracks in the seed coats, making them heavier. The seeds will then settle to the bottom, as intended.

After 15 hours, if any seeds are still floating, tap them with tweezers to help them sink. If they don’t, soak the seeds for a further 12 hours.

If, after 24 hours of soaking, one or more seeds still refuse to sink, you should proceed to the following stage. It’s possible that the seeds in question simply have thicker shells, making germination and growth a little slower.

The Third Step

Wrap some paper towels around a clean glass or plastic dish. Empty the contents of the glass, including any remaining seeds, onto the towel. As the towel absorbs water, you may gently squeeze off the surplus. Move your seeds apart by an inch using your tweezers once more. Additionally, shift them to the other side of the dish since you’ll be folding the towel over the top of the seeds.

Put the platter in a warm, dark place with the towel covering the seeds. Your autoflowering cannabis seeds need these two factors in addition to water.

Check on your autoflowering seeds twice daily, giving them enough light to germinate. You should be able to see a white taproot within the shell. Before planting in soil or medium, the taproot should be approximately half an inch long. Several variables, including the seed’s shell thickness, may extend this process to six days.

Make sure the towel is still damp but not dripping every time you inspect your seeds. Mold may develop on seeds if they float about in the water. If the taproot is still covered by water, it won’t have to do any foraging for food. Just spray the paper towel with clean water when it seems like it may dry out.

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Using a Germination Chamber

As your knowledge and skill level increase, you’ll want to upgrade to more professional instruments like a germination chamber. It resembles a miniature greenhouse with a heat mat, a humidity dome, and a plastic foundation with square cells. You may easily create one at home for very little money.

Step One

If you have a lot of seeds to germinate at once, a germination chamber is your best bet.

Various seeds work well in the chamber as it maintains the ideal conditions for seed germination and early development.

So, the question is, how does one go about germinating a cannabis seed in a germination chamber? You should start by making a small hole in the wet medium. Then, you should cover the seed without pressing it down. You should regulate the heat temperature using a heat mat. Lastly, spraying the humidity dome should result in sprouting seedlings in a few days.

Using Rockwool

Rockwool are small cubes of sand fibers and rock. They have a high water absorption rate due to their texture. You can use them for germinating seeds and clones, and they often deliver satisfactory results.

Their portability makes them a useful complement to the germination chamber. They are very useful in hydroponics, particularly when combined with clay pellets. Overwatering Rockwool cubes is a common problem that may lead to root rot. Rockwool or peat pellets may be used to germinate a seed using the same method described above. 

Wet the medium, create a small hole of about one to two centimeters in diameter, insert the seed, and cover the hole gently without pressing down. The roots will continue to grow down even if they reach the end after they have sprouted. Therefore the pellet or cube should be placed immediately in any medium or hydroponics chamber.

Direct Planting into the Medium

Sometimes the simplest solution is indeed the best. In nature, we can make our seeds germinate in whichever media we choose. It’s easy to plant seeds: just create a little hole (one to two cm deep) with a pencil or your fingers, drop in the seed while making sure the medium is wet but not drenched, then top up the hole with dirt without pressing down. An advantage of this procedure is that you don’t have to worry about injuring your seedling while transferring or stunning it since it is already at its final spot.

Best Practices for Accelerating Seed Germination

Placing the Seeds

The crown is a depression at one end of the oval-shaped cannabis seed. To ensure the cotyledons emerge from the correct end of the seed, it is best to sow cannabis seeds with the crown facing up.

Keep an Eye on the Moisture Level

The biological mechanisms that provide the energy for the seedling to break through the seed shell and begin developing are activated during germination, and this, in turn, requires moisture. Remember that the focus is moisture; you don’t want to oversaturate your seeds. Once the seed is placed in the paper towels, and the process has started, it is important to check on it often to ensure it stays wet. To aid germination, you must also maintain the paper towels in a warm, damp environment.

It doesn’t matter which medium you’re germinating your seeds in; a heating mat and/or germinating chambers may help you get better results. You’ll get the best results if you keep the substrate damp.

The correct depth at which to put a seed is a major challenge for novice gardeners. If you continue to water the substrate after you’ve planted the seeds, you may cause more damage. Keep in mind that if you plant a seed too deeply, it may never germinate, but if you plant it too shallowly, the taproot may get twisted, the stem may become weak, and the plant may never reach its full potential.

That’s why two centimeters of soil is ideal for planting the seed. You may use a ruler, a straw with a two centimeters mark, or any other suitable tool to achieve this. The next step is to place the seed and gently cover it with the substrate.

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Plant Only One Seed in One Pot

When you don’t have enough substrate or containers, you may try planting numerous seeds in the same pot, but this seldom works out well for several reasons. Although it may be more convenient to germinate seeds in the same container, they will grow. This might lead to root competition and poor plant health since the roots won’t have enough room to develop.

You won’t get the most from each plant if all the seedlings survive the vegetative stage since they will continue vying for light. Growers should only plant one seed per pot unless using raised beds 100–200 liters in size since insufficient light might weaken the stem and branches, causing issues during flowering.


Cannabis seeds germinate properly with relatively high temperatures and humidity, but no ideal method exists. Germination is regarded as successful after the seedlings develop their first set of leaves, called cotyledons. You can employ various methods to get a plant from the seedling stage to the blooming stage in good condition and ready for harvest.

Our recommendation for novice growers is, to begin with autoflowering strains, whether you’re trying to decide which germination technique to use or are preparing for your first successful grow setup. Growing autoflowers Automatic is the best option if you want something simple, fast, and low-maintenance. 

In conclusion, you can germinate autoflowering cannabis seeds in several different methods. While it’s true that certain approaches are more effective than others, it’s ultimately up to you to discover the strategy that best serves your needs. Try several methods to determine what works best for you while germinating autoflower seeds. Additionally, you have to remember that, like everything, growing 420 autoflower seeds also takes a lot of practice and patience.