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What are feminised seeds? Dutch Passion created feminized cannabis seeds Feminised cannabis seeds have been one of the most important contributions to the cannabis growing movement in the Growing weed in an AeroGarden: the complete step by step guide with everything you need to know along with pro-tips by experimented growers. A step-by-step guide describing the best way to germinate your cannabis seeds. This germination method is ideal for the indoor and outdoor grower.

What are feminised seeds?

Dutch Passion created feminized cannabis seeds

Feminised cannabis seeds have been one of the most important contributions to the cannabis growing movement in the last generation. Dutch Passion were the first ones who, against all odds, created cannabis seeds that gave rise to 95%+ female plants. These seeds are known as feminised seeds, today they are the most popular and convenient choice for those growing their own stash.

The inconvenience of regular seeds

Before feminised seeds, ‘regular’ cannabis seeds were used which produced approximately 50% male and 50% female plants. This meant that growers had to germinate and grow twice the desired number seedlings in order to reach a satisfactory number of mature females. With the arrival of feminised marijuhana seeds a grower simply plants the desired number of seeds and forgets about the inconvenience of male plants. Male plants not only waste space in a garden, they also risk reducing the finest sensimilla into seed pods. For most growers of recreational or medical marijuana the male plant is simply no longer wanted. The recent boom in home-grown cannabis has been made a lot easier with the arrival of feminised marijuana seeds. No more worrying about how to identify male plants.

Feminised marijuana seeds are grown in the same way as regular seeds. They can be grown indoors, in greenhouses or outside. They can be grown in soil or hydroponic systems. Feminised seeds give more stable results than regular seeds, resulting in better potency for 80% of all varieties.

The feminisation process

The exact process of cannabis seed feminisation has been a secret for many years. The principle is straightforward. Female plants can be stimulated to produce pollen in such a way that the pollen is regarded as ‘female pollen’. The female pollen is used to pollinate a female plant which then starts producing seeds. The seeds produced by this method are feminised – they give rise only to female plants.

The benefits of feminised marijuana seeds

As an additional benefit the feminised marijuana seeds tend to give rise to more uniform plants than regular seed. For the experienced growers feminised seeds have simplified life. To the new grower, feminised cannabis seeds are the only way to go. Growing top quality strains of cannabis has never been as easy, just choose the strain, plant the seeds and ensure ample light and sufficient nutrients.

Dutch Passion invented feminised marijuana seeds and have perhaps the worlds best selection of top quality feminised strains. If you are thinking about buying some feminised seeds then first take a look at what Dutch Passion has to offer – you won’t be disappointed!

The feminized seed experiment

In a Dutch Passion experiment done in 1999 Dutch Passion grew 15 varieties of “feminized” seeds. We started with 30 seeds per variety. The goals were: 1) to determine the percentages of female, male, and hermaphroditic plants. 2) to compare the uniformity (homogeneity) among plants from “feminized” seeds with those grown from “regular” seeds.

1. The results were excellent. Nine out of fifteen varieties had 100% female offspring. Percentages of female plants from the other 6 varieties were between 80 and 90%. These plants were all hermaphrodites, producing their male flowers at the end of their lifecycle. Seed-setting hardly took place. No males were found.

2. Approximately 70% of the plants of varieties grown from “feminized” seeds were far more uniform than plants grown from “regular” seeds of the same variety. About 20% of the varieties were a little more uniform, while in 10% of the varieties no difference in uniformity was seen.

From literature and our own findings it appears that the growth of a male or female plant from seed, except for the predisposition in the gender chromosomes, also depends on various environmental factors. The environmental factors that influence gender are:

• a higher nitrogen concentration will give more females.
• a higher potassium concentration will give more males.
• a higher humidity will give more females.
• a lower temperature will give more females.
• more blue light will give more females.
• Fewer hours of light will give more females.

It is important to start these changes at the three-pairs-of-leaves stage and continue for two or three weeks, before reverting to standard conditions.

To produce our feminized cannabis seeds, we start with selected female clones. Under standard conditions these female clones do not produce any male flowers. By the method we found, we are able to have these female clones produce abundant male flowers and pollen (see photos). The pollen thus produced we use for the production of our “feminized” seeds.

How to Grow Weed in your AeroGarden

Miracle-Gro AeroGarden™ is an exciting hydroponic system. You can grow fresh herbs, lettuce, tomatoes, year-round, in the comfort of your home.

You may be wondering: Is it possible to grow weed in an AeroGarden? And is it worth it? The short answer is Yes.

In this guide, I’m going to show you everything you need to know to grow weed your AeroGarden™ successfully including the best practices, the material needed, and exclusive pro-tips by experimented growers.

The best part? It will pay for itself in only 2 or 3 grows in weed value!

Table of contents
1. The Best AeroGarden Models For Weed

At the time I wrote these lines, the available models are; Sprout, Harvest, Classic, Bounty, and Farm family. To grow weed successfully, you will need a garden with 24 inches of growing height capacity and a powerful grow light panel.

So here are the AeroGarden models I recommend:

The AeroGarden™ Classic 9 is one of the most powerful models. It comes with a 45-watt LED full spectrum growth light and a growing height extendable up to 24 inches.

The Classic 9 also includes a touch screen control panel that makes things very easy and fun to control!

Classic 9 Bounty model has been replaced recently by a new design and this one is now obsolete but still one of the best to grow weed.

The most recent AeroGarden Bounty comes with a 40-watt grow light. The Bounty Elite (WiFi and Alexa Compatible) comes with a 50-watt grow light and both have 24 inches of growing height capacity.

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Finally, the bigger models available are the AeroGarden™ Farm family with 60W of dual LED power and 24 inches of growing height.

2. Weed strain and seed type for the AeroGarden

Since the maximum grow height is only 24 inches (when the LED panel is fully deployed), it’s crucial to choose a strain that will stay small and compact.

Some strains can grow big plants that are not suited for the AeroGarden small reservoir. The strains also determine the effects and medical attributes.

2.1 Cannabis seed types

Autoflowering seeds are perfect for beginners because they grow very quickly and stay smaller. Also, there’s no need to change the light cycle to induce the flowering stage, and you will get only female plants.

Some strains can take only 10 weeks from seed to harvest.

On the other hand, yields are usually smaller with autoflowering seeds and most have a lower THC percentage.

Feminized seeds are also great, they allow growers to apply training techniques that aren’t recommended for auto and they can be cloned.

You will have to change the light cycle from 18/6 to 12/12 to trigger the flowering phase. Increased darkness hours tell the plant the fall is coming and start creating buds.

Key takeaway: Feminized seeds give more control to the experienced grower while autoflower seeds grow faster and are suitable for beginner grower.

2.2 Recommended marijuana strains for the AeroGarden
    – (Hybrid) – (Hybrid) – (Indica) – (Indica) – (Hybrid) – (Hybrid) – (Hybrid) – (Hybrid) – (Indica) – (Hybrid) – (Hybrid)
3. The shopping list

Now you have your AeroGarden™ and your seeds, you will need the material below, and the optional list will help to have more yield out of your grow.

3.1 Required
3.2 Optional products

Cannabis, like any other plants, needs calcium and magnesium.

Your tap water may have calcium and magnesium in small concentrations, but likely not enough.

If you’re using distilled water, you will need to add a Cal-Mag solution to your water as they are essential secondary nutrients for healthy plant growth.

Botanicare Hydroguard® is well known for their unique beneficial bacteria that help to increase root mass and health.

Pro-tip:

In my installation, I have added an external air pump with an air stone to make more bubbles in the root zone. This helps to prevent roots rot, and bring more oxygen to the roots.

The external pump also helps to reduce the usage of the AeroGarden™ built-in pump. The water temperature will stay low, and you will be able to keep an optimal temperature (between 65 and 80 degrees Fahrenheit).

On the top of the AeroGarden reservoir, you will find two water/air ports with rubber plugs that you can remove.

They are the same size as the standard aquarium airline tubing. Just place the tubing inside one of them and put the air stone in the center of the bowl.

4. Nutrients and the importance of pH

Important: don’t use the provided plant food that comes with the AeroGarden™. This will not work, and you will lose your time and seeds.

I use General Hydroponics Flora Series, and I always have great results with these nutrients. Some other popular alternatives are Advanced Nutrients and Botanicare.

Your AeroGarden™ Bounty holds approximately 4 liters of water. I pour this amount of water into a big stainless steel mixing bowl. Let the tap water sit for 24 hours to become chlorine-free or use distilled water.

Now it’s time to add nutrients to the water. Begin with half of the recommended dosage by the manufacturer.

If you’re using GH Flora Series, take a look at this fully-tested nutrient schedule.

4.1 pH control

The pH scale ranges from 0 to 14. The pH of the AeroGarden™ solution should be between 5.5 and 6.5.

So I target 6, and I check with the pH pen tester every day and make the required adjustments with pH buffers (do not use pH up and pH down in the same solution).

In the vegetative phase, the pH tends to go higher, and in the flowering stage, it tends to go lower. Keeping the pH in the target zone is essential. Out of this zone, the cannabis plant may be unable to absorb some nutrients, and this leads to nutrient deficiencies.

If the pH fluctuates a lot or is out of control for a long time, your plant leaves will become distorted especially in the new growth areas.

This can be reverted, but the affected leaves will not return to normal appearance.

Key takeaway: pH problems can slow the growth of your cannabis plants and lower your yield.

4.2 Total dissolved solids (TDS) & parts per million (PPM)

Before pouring the solution into the AeroGarden’s bowl, you need to verify the concentration of nutrient in the solution with the TDS digital meter.

In the first weeks, the PPM should be around 400, and this amount increase as the marijuana plants grows. In the early flowering stage, the TDS could be around 1000+ PPM.

High nutrient concentration levels will not help the plant to grow faster and can lead to problems like nutrient burn.

5. AeroGarden setup to grow weed

Now the fun part! I assume you have already assembled your hydroponic system and you have transferred the solution to the AeroGarden reservoir.

Now let’s take a closer look at the control panel. First, set the clock, and if you’re in the quick plant menu, select the grow anything option.

5.1 Grow light settings

Select the sun icon, and follow the steps to configure the grow light. If you have autoflowering seeds, I recommend 20/4 light cycle. My settings are as follow; light open at 6:00 am, and close at 2:00 am.

For feminized seeds, I suggest 18/6 for the vegetative stage, then switch to 12/12 to trigger flowering stage.

5.2 AeroGarden™ Pump settings

Select the water icon, and then change settings. Follow the steps until you reach the pump on/off screen.

In the vegetative stage, I recommend setting the pump 30 minutes on, and 60 minutes off.

In the flowering stage, it’s better to give an oxygen boost in the water for the increasing root masse of your plants. So, if you don’t have an external pump, set the pump to 60 minutes on, and 30 minutes off.

If you have the external air pump with an air stone, keep in mind this one should run all the time from seed to harvest. You can configure the AeroGarden built-in pump 10 minutes on, and 60 minutes off when you run the external pump.

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5.3 Nutrients settings

Finally, select the nutrients icon, and then settings. Set your nutrients cycle to 7 days. This is a simple reminder, and the AeroGarden™ will give you a warning every week to add nutrients and replace the water.

6. Seed germination

I strongly recommend growing only one or two plants at a time. Your marijuana plants will need an increased amount of space while growing and try to put more plants will decrease the yield.

Take two grow sponges and baskets, then place the seeds into the small holes. Be sure seeds are not falling too deep, (1/2” would be awesome). Cover the two pods with the provided transparent domes and put duct tape over the remaining pod holes.

From my experience, it could take anywhere from 2 to 4 days to see the first tiny sprout.

How to Germinate Cannabis Seeds

Germination is the beginning of your cannabis seeds’ life and is easy to master. At this crucial stage, seeds grow and sprout into young seedlings. The best genetics deserve the best start, and all you need is two plates, some paper towel, and water. Apply the best germination method today and enjoy a great harvest.

1. Germination set-up

Prepare the first plate by lining the inside surface with two to three layers of damp paper towel. Drain excess water from your plate.

Place cannabis seeds on the top surface of the damp paper towel. Approximately three per plate; ensure they are not touching but are evenly spaced apart.

Add only a few layers of damp paper towel on top of the seeds, and let any excess water drain from the plate. Too much water lowers the chance of successful germination.

To complete the set-up, place the remaining plate upside-down and on top of the first plate, resembling pearls inside a clam.

2. Germination

Cannabis seeds need a dark, warm, and humid atmosphere to germinate.

Around 21°C (70°F) is perfect. Check the paper towels every second day and if required, spray with water to keep conditions moist for your seeds.

After a few days, tiny roots will begin to emerge. Congratulations! Your seeds have survived their first stage of life. Don’t worry if some of your seeds have not yet changed, they may just need a little more time as germination can take up to 14 days.

3. Plant of the seeling

Once the roots are a few millimetres long, they are ready to be delicately transferred to a small container filled with your growing medium of choice (rockwool, coco-fibre, or soil).

Make a hole in the growing medium that is 2 – 5 mm deep. Use tweezers or your fingers to transfer germinated seeds gently into the hole (root pointing down) and lightly cover with a fine layer of your medium. Do not pat it down too hard. The stem and the first tiny set of leaves, called cotyledons or ‘seed leaves’, should begin to emerge 24 to 72 hours after the seeds are planted.

4. Supplying a light source

Seedlings must be exposed to sunlight once they sprout. Ensure this is a gradual process as too much heat causes stress and will stunt growth.

Find a sunny place where you can begin to increase sun exposure, such as a windowsill. Ensure sun exposure is increased by an hour or so a day.

For an indoor plant you can use a fluorescent light (keep normal distance from bulb) or HID lighting (50-80 cm from the bulb).

Take care in the first week or two, as seedlings are still quite delicate and sensitive to the elements. They won’t need a lot of attention until the vegetative stage so avoid overhandling.

Germination is the beginning stage of the growing cycle, and this easy-to-follow guide gives your premium genetic cannabis seeds the best start to life. Whether you are a first-time home grower or a well-seasoned gardener, share your experience or any questions in the comments down below, as well as your tips and tricks!

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Laws and regulations regarding cannabis cultivation differ from country to country. Sensi Seeds therefore strongly advises you to check your local laws and regulations. Do not act in conflict with the law.

Comments

24 thoughts on “How to Germinate Cannabis Seeds”

Hi, Once seeds have sprouted, how long can or should you leave them to grow under 24 hr lights before moving to your outdoor garden?

Good afternoon Ken,

I hope you’re having a great day.
For the vegetation process, a light schedule of 18 hours of light, and 6 hours of darkness is preferred. Many growers get plants acclimatized to outside by placing them in a window, or under direct sunlight for a few hours a day.

Thanks again, and have a great day!

Hello everyone, all these suggestions are wonderful but I think a lot of you make it sound a little overwhelmingly. I’ve been very successfully cultivating for decades and I’ve always just placed my seeds, be it 1 or 100, in between 2 folded sheets of tissue which I’ve made wet with tap water. I then place them on a tray or plate in a warm dark area , such as an airing cupboard and leave for how ever long they take usually, 12 to 24 hours. The ONLY thing I do which takes effort is PH balance the water I germinate them in and I’ve only lost 5 seeds in nearly 40 years .

Good afternoon Paul,

I hope you’re having a good day,
Thanks for sharing your experiences with germination. pH balancing is a great tip You also might be interested in our new Jamaican Pearl Feminized Grow Report

Thanks again, and I hope you continue to enjoy the blog,

I lightly score my seeds by shaking them inside a rolled up piece of sandpaper – sandpaper side on the inside before leaving them in a cup of water for a few hours to hydrate. I then place them between wet (good quality) paper towel per instructions above. I find using an old plastic takeaway container with a heatmat below keeps the humidity high and with good end results.

Good morning Jonny,

Thanks for sharing your methods for germination with us, the heat mat and low-humidity are great tips!

Thanks again, and I hope you continue to enjoy the blog,

I have found out that the best and fastest way is to take a glass of clean/filtered water and place the seed right on top of the water (floating – NOT immersed in it!). If the seed is viable it will sprout in no more than 48 hours. Right after that you plant it in your pot/soil etc and you’re done.

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Good morning Mary Jane,

Thanks for your support, and for sharing your experiences with germination!
You might also be interested in our article on The Life cycle of Cannabis: From seed to harvest.

Have a great day!

What happend if they sink I had em sink they came out fine

Once you put the seeds in water they normally won’t sink straight away, leave it for around 5 hours and then tap your seeds and they all should start sinking if they don’t then they won’t work. But still leave them over night and tap again and take out the ones that didn’t sink and throw them away or plant if you want to try your luck.. take all the other seeds out and follow instructions above you’ll see the open within a day..

Are you saying they sprout in the glass of water and don’t “drown”?

No, don’t leave the seeds in water for longer than 24 hours or they will drown.. after around 12 hours all your seeds should have sunk if they haven’t then just give them a tap and they will sink.. then take them out and follow the paper towel and plates instructions

Take aluminum foil flatten it out and put on top of your dirt it detects planes and grow it just like a tomato plant

Good morning Tammy,

Thanks for getting in touch with Sensi Seeds, and sharing your germination method with us!

Thanks again, and I hope you continue to enjoy the blog.
With best wishes,

Detects planes? Like magnetic? I’ve always has best success 24-48 hours soaked In water, spring water if possible. Usually do this in a shot glass, once they pop I’ll take a paper towel fold so it’s 2 layers then fold once more so you know where center is. Dump the seed in the middle of the edge and the true center (reason we folded a 2nd time)as well as the water just enough to saturate the paper towel. Do not soak! Carefully with the seed in the middle using sterile tweezers turn so the tap is growing down. This will prevent circling and tangling if doing multiple seeds. Now you can fold the other half so your seed will be “sandwiched” between 2 layers. At this time carefully take a corner and the waters attraction should keep your paper towel from unfolding but just in case be gentle. Holding it from 1 corner you can dangle it over a cub or the original shot glass so any extra water runs off. Now take a standard zip or press n seal sandwhich bag and slide your napkin in Carefully . REMEMBER which way was down! Work the air out making jt flat snd seal. Find a temperate dark area around 70°. A cabinet works we’ll as your going to prop it up with taproot facing downwards. Now just close it up and wait in 24-72 hours checking once a day. In rare cases you could have a 1/2″ tap root in the first 24 hrs some may take 4-5 days. Once the tap is about 1/2″-3/4″ long its ready for transplant into its first small pot. With this paper towel method I typically have 100% success.

Can you leave your seed to develop longer roots in the germination phase and can this make them better to grow or is a big no no?
Last year, I had 2 seeds that had really long roots with lots of secondary roots coming out when they were planted, one of which died after a couple of weeks and the other grew into a huge plant.
The other two seeds only had a short germinated growth and both died almost immediately after planting so not sure what I can learn from this…lol

Appreciate any thoughts and advice

Unfortunately, legal restrictions mean we can’t answer grow-related questions or give grow advice on this blog. However, other readers of this blog will often answer questions like yours.

Please check out the following articles on our blog which I think you may find of use, and I hope you continue to enjoy the blog!

With best wishes,

How often do you water and how wet should the plant be? Please.
Also if they are outdoor plants do you need to keep them covered with clingfilm for a wee while or do you just hope for the best. Thanks

This article, about how to water cannabis plants, should answer your questions. I can’t help you with the clingfilm one though, as it depends on the climate. Good luck, and happy gardening!

With best wishes,

Just drop the seeds in water, they will sprout , don’t have to use a towel and check it all the time , drop it in the water , let it float then it will sink and the root will grow out ,let the root get 1/4 inch and plant it where it’s going to grow , 8 hours sunlight starting as soon as it is out of the soil. Always grows great , don’t have to transplant from cup to gallon to bigger and bigger , if it’s growing outside put it where it stays , always does just fine.

Good afternoon Graham,

Thank you so much for sharing your experiences with germination.

Thanks again for your comment, and I hope you continue to enjoy the blog.

Have a great day!

I recommend this article to all breeders and cultivators who plans to germinate seeds and to some who don’t know how to germinate seeds, this article has the best and perfect ways on how to do it.

I have large bay windows at my condo which get about 11-12 hours of light per day. They are tinted but warm. I grow other indoor plants there perfectly. Is an ok place for my pot plants?

This sounds like a great place for all kinds of plants! I recommend you have a look at autoflowering varieties, as otherwise light pollution may negatively affect the flowering cycle. Good luck, and happy gardening!

With best wishes,

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The Sensi Seeds Editorial team has been built throughout our more than 30 years of existence. Our writers and editors include botanists, medical and legal experts as well as renown activists the world over including Lester Grinspoon, Micha Knodt, Robert Connell Clarke, Maurice Veldman, Sebastian Maríncolo, James Burton and Seshata.

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