How To Grow Marijuana From Seed

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Marijuana Cultivation/Producing Seeds Sooner or later every grower is going to want to produce marijuana seeds. Developing a new stable strain is beyond the scope of this discussion and requires Everything you need to know about the 6 stages of cannabis growth. From selecting seeds to determining plant sex. Want to grow cannabis from seeds? Read on for everything you need! Includes info on your genetics, lights, nutrients, grow tents, soil media, and more!

Marijuana Cultivation/Producing Seeds

Sooner or later every grower is going to want to produce marijuana seeds. Developing a new stable strain is beyond the scope of this discussion and requires the ability to grow hundreds or even thousands of breeding plants. However, just about any grower can manage to preserve some genetics by growing f2 seeds where they have crossed a male and female of the same strain, or can produce a simple cross which would be referred to as strain1xstrain2 for instance white widow crossed with ak-47 would be referred to as a WW x AK-47. You can produce some excellent seed and excellent marijuana this way.

To Feminise or not to Feminise Edit

There are numerous myths surrounding feminized seeds. Feminizing seeds are a bit more work than simply crossing two plants naturally. However it will save you a lot of time in the end. If you make fem seeds properly then there is no increased chance of hermaphrodites and all seeds will be female. This means no wasted time and effort growing males and it means that all your viable seeds produce useful plants. Since roughly half of normal seeds are male this effectively doubles the number of seeds you have.

Feminized seeds are bred to contain no male chromosomes, which will be able to produce the crop of resinous buds sought by most growers. For gardeners who require a quick and easy cultivation process, feminized seeds are the ideal choice. Some medicinal cannabis users may be deterred from growing their own supply because of the perceived difficulty of growing or of identifying the different genders and removing males early in the blooming period. Feminized seed-strains offer a simple solution to these issues, as there is no need to spend time in the first weeks of flowering checking for male plants.

Other times you will have no choice but to produce feminized seed because it will be a female plants genetics that you want to preserve and you won’t have any males. Perhaps you received these genetics via clone or didn’t keep males.

The new thing on the market for commercial Cannabis cultivation are auto-flowering feminized strains. By crossing of the cannabis ruderalis with Sativa and Indica strains many cultivators have created interesting hybrids which boast benefits from both sides of these families.

The first ‘auto-flowering cannabis seed’ which came on the market a few years ago was the Lowryder #1. This was a hybrid between a Cannabis ruderalis, a William’s Wonder and a Northern Lights #2. This strain was marketed by ‘The Joint Doctor’ and was honestly speaking not very impressive. The genetics of the ruderalis was still highly present which caused for a very low yield and little psychoactive effect. Not very attractive.

Auto-flowering cannabis and the easily distributed seed have opened a whole new market in the world of the online grow-shop, making it easy for home growers with shortage of space to grow rewarding cannabis plants in many different varieties. To grow plants indoors, a growing medium (e.g. soil or growing Potting soil, irrigation (water), fertilizer (nutrients), light and atmosphere need to be supplied to the plant.

Auto-flowers have been rising in popularity fast and there are now auto flower growers communities. These Web properties allow users to get information on how to grow these non photo-sensitive plants and what are the best practices when producing and germinating auto-flower seeds.

Selecting Suitable Parents Edit

There are a number of important characteristics when selecting parents. First are you making fem seeds? If you are then both parents will be female. This makes things easier. If not then the best you can do is select a male with characteristics in common with the females you hope to achieve from the seed.

Obviously potency, yield, and psychoactive effects are critical to the selection process. But some other important traits are size, odor, taste, resistance to mold and contaminants, early finishing and consistency.

Collecting and Storing Pollen Edit

In order to collect pollen you simply put down newspaper around the base of the plant. The pollen will fall from the plant onto the newspaper. You can then put this newspaper into a plastic bag and store it in the refrigerator or freeze it. Pollen will keep for a few months in the refrigerator and can be used on the next crop. Filtering the pollen through a silkscreen, drying, and freezing can extend viability for decades. At least one reader indicates success using pollen treated in this manner and stored at -30 c for 17 years. The chance of viability does decrease with time, even in the freezer, so the more fresh the pollen the better. Wrapping the pollen in a layer of aluminum foil and then a layer of plastic should help to protect it from freezer burn. Additionally, oxygen evacuation such as with a heavy gas like nitrogen or vacuum sealing should provide additional assurance of preservation.

Pollinating a Plant Edit

To pollinate a plant you can brush the pollen on a flower with a cotton swab or you can take the plastic bag, then wrap the flower inside it and shake, trapping the pollen inside for easier transportation. In this way you can selectively pollinate plants and even individual buds and branches.

Male Isolation Edit

A male plant or a plant with male flowers will pollinate your entire crop rendering it seedy. You probably don’t want THAT many seeds so how can you avoid it? Moving the male to another room might work but if that other room shares an air path via ducting or air conditioning then pollen may still find its way. One technique is to construct a male isolation chamber.

A male isolation chamber is simply a transparent container such as a large plastic storage tub turned on its side (available at your local megamart). Get a good sized PC fan that can be powered with pretty much any 12v wall adapter, by splicing together the + (yellow or red on fan, usually dotted on power adapter) and the – wires (black on fan, usually dotted power adapter) just twist with the like wire on the other device and then seal up the connection with electric tape. Then take a filtrate filter and cut out squares that fit the back of the pc fan so that the fan pulls (rather than pushes) air through the filter. Tape several layers of filter to the back of the pc fan so all the air goes through the filter. Now cut a large hole in the top of the plastic container and mount the pc fan over top of it so it pulls air out the box. You can use silicon sealant, latex, whatever you’ve got that gives a good tight seal.

This can be used as is, or you can cut a small intake in the bottom to improve airflow. Pollen won’t be able to escape the intake as long as the fan is moving but you might put filter paper over the intake to protect against fan failures. You can also use grommets to seal holes and run tubing into the chamber in order to water hydroponically from a reservoir outside the chamber. Otherwise you will need to remove the whole chamber to a safe location in order to water the plant or maintain a reservoir kept inside the chamber.

See also  Cannabis Seeds Arizona

Making Feminized Seed Edit

To make feminized seed you must induce male flowers in a female plant. There is all sorts of information on the Internet about doing this with light stress (light interruptions during flowering) and other forms of stress. The best of the stress techniques is to simply keep the plant in the flowering stage well past ripeness and it will produce a flower (with seed).

Stress techniques will work but whatever genetic weakness caused the plants to produce a male flower under stress will be carried on to the seeds. This means the resulting seeds have a known tendency to produce hermaphrodites. Fortunately, environmental stress is not the only way to produce male flowers in a female plant.

The ideal way to produce feminized seed through hormonal alteration of the plant. By adding or inhibiting plant hormones you can cause the plant to produce male flowers. Because you did not select a plant that produces male flowers under stress there is no genetic predisposition to hermaphroditism in the seed vs plants bred between a male and female parent. There are actually a few ways to do this, the easiest I will list here.

Colloidal Silver (CS) Edit

This is the least expensive and most privacy conscious way to produce fem seed. CS has gotten a bad name because there is so much bad information spread around about its production and concentrations. It doesn’t help that there are those who believe in drinking low concentration colloidal silver for good health and there is information mixed in about how to produce that low concentration food grade product. Follow the information here and you will consistently produce effective CS and know how to apply it to get consistent results.

Simply construct a generator using a 9-12 v power supply (DC output, if it says AC then its no good) that can deliver at least 250ma (most wall wart type power supplies work, batteries are not recommended since their output varies over time). The supply will have a positive and negative lead, attach silver to each lead (contrary to Internet rumors, you aren’t drinking this so cheap 925(92.5%) Stirling silver is more than pure enough. You can expose the leads by clipping off the round plug at the end and splitting the wires, one will be positive and the other negative just like any old battery. Submerge both leads about 2-3 inches apart in a glass of distilled water (roughly 8 oz). Let this run for 8-24 hrs (until the liquid reads 12-15 ppm) and when you return the liquid will be a purple or silver hue and there may be some precipitate on the bottom.

This liquid is called colloidal silver. It is nothing more or less than fine particles of silver suspended in water so it is a completely natural solution. It is safe to handle without any special precautions. [ citation needed ] The silver inhibits female flowering hormones in cannabis and so the result is that male flowering hormone dominates and male flowers are produced.

To use the silver, spray on a plant or branch three days prior to switching the lights to 12/12 and continue spraying every three days until you see the first male flowers. Repeated applications after the first flowers appear may result in more male flowers and therefore more pollen. As the plant matures it will produce pollen that can be collected and used to pollinate any female flower (including flowers on the same plant).

Silver Thiosulfate (STS) Edit

Silver Thiosulfate is a substance that has similar principle, application and results of CS, but is more difficult to make. STS is more difficult to acquire, but it can still be obtained directly from a chemical supply company. STS is not an expensive or controlled substance.

Gibberellic Acid (GA3) Edit

This is probably the most popular way to produce feminized seed, but at the same time the least effective. GA3 is a plant hormone that also causes the plant to stretch uncontrollably. It can be purchased readily in powdered form, a quick search reveals numerous sources on e-bay for as little as $15. Simply add to water to reach 100ppm concentration and spray the plant daily for 10 days during flowering and male flowers will be produced.

The Stages of Cannabis Growth

Cannabis growth is made up of a series of stages that plants undergo during their lifecycle. Each stage during the cannabis cultivation process requires its own unique demands, including different levels of light, water, and nutrients.

It can take anywhere from 4 to 8 months to grow a cannabis plant, this varies based on where you’re growing. If you have an indoor grow room, your plant has the ability to flower after only a few weeks!

The quality of your plant depends on your knowledge of the cannabis growth stages and the lifecycle of your plants.

Cannabis Growth Timeline

1. Germinating: 1-7 days
2. Seedling: 2-3 weeks
3. Vegetative: 2-8 weeks
4. Pre-Flowering: 1-2 weeks
5. Flowering: 6-8 weeks
6. Harvesting

1. Germinating Seeds

2. Seedling Stage

3. Vegetative Growth

4. Pre-flowering

How to tell if your plant is a male or female

Female: Two pistils (the pistil contains the reproductive parts of a flower) will be growing on the buds (flowers grow above these leaves, one cluster on each side).

Male: Small green sacs full of pollen will be seen on the node areas.

5. Flowering

  • If there is a high color ratio of white to red pistils your cannabis will provide a euphoric THC high.
  • If the color ratio is more red to white, your cannabis will provide a calmer, CBD-stoned feeling.
  • If you harvest once half the trichomes are opaque and the pistils haven’t turned brown, your cannabis will provide a balanced THC/CBD high.

6. Harvesting

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See also  Single Marijuana Seeds

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How to Grow Cannabis from Seeds in 7 Steps: The Ultimate Guide to Your Best Cannabis Grow – 2020

Growing cannabis from seeds is easier than you might think. Read on for info on genetics, soil & other grow media, grow tents, lights, nutrients and more!

Before we begin, I’ll be straight with you: All you really need to grow cannabis from seeds is a pot, grow media like soil or coco, seeds, water, plenty of light, and a few nutrients. That’s it. Of course there are other supplies you could use such as a grow tent or high performance LED light, but they’re not always necessary. Cannabis has a long history of wild growth without any help from people. There’s a reason they call it “weed,” and that’s because it grows like one.

But even though you can grow cannabis without any special equipment, there’s an advantage to spending a little money on the right equipment. Industry experts are constantly improving their products which in turn help produce higher cannabis yields and a better flower. So today, as part of our mission to educate and provide valuable information, we’re going to go through each stage of your cannabis grow and highlight some of the equipment that can help you maximize your harvest.

Do you want to learn how to grow cannabis? Check out Growers Network University!

1. Cannabis Genetics

Genetics is just a fancy word for your seeds, and that’s what you need if you want to grow cannabis from seeds! The term can also refer to cannabis clones, but for the beginning grower, seeds are much easier to source. If you are interested in starting from clone stock, you can generally purchase them from a qualified local grower, assuming there are no laws against clone sales in your jurisdiction.

But which Cannabis seeds to buy? That depends on your grow style and personal preference. You’re going to choose an Indica, Sativa, or hybrid or course, but do you want regular seeds, feminized seeds, autoflowering seeds, or some combination? With regular seeds you’ll have to remove any males before they mature and pollinate your females or you’ll end up with seedy, low-quality buds. Additionally, cannabis grown from regular seeds will only flower in response to a change in the photoperiod (how many hours of light they are exposed to) so farming these types of seeds requires a bit more care and attention than autoflowering strains (which produce buds when they are old enough, not in response to the light) or feminized seeds which eliminate the need to monitor for males. If you’re looking for the simplest type of seed, you can go with autoflowering, feminized seeds.

Note: See our cannabis seed FAQ section below the article.

2. Cannabis Germination

Germinating refers to sprouting your cannabis seeds prior to planting. This isn’t always necessary when growing cannabis from seeds, but it WILL improve your chances of germination. The easiest way to do this is to fold your seeds inside of a moist paper towel and wait for a few days, making sure your paper towel remains moist. In this time you should see your seed “pop” as the tap root emerges. Now you’re ready for planting.

If you want a more controlled germination of your cannabis seeds, there are mini-greenhouses available with starter pods which allow your seeds to begin rooting prior to transplanting them into your grow media and offers an overall safer transition from germination to pot.

You can have a look at germination domes here.

3. Grow Media, Grow Tents, & containers

More than likely, you’ll be growing indoors in a grow tent and in soil. There are a variety of media types available including soil, peet, and coco. We recommend soil for the beginner, but whichever you choose it’s important not to skimp on the media. Spending a little extra money on your media will pay off in terms of cannabis quality and help you avoid problems such as pests, unbalanced pH, and poor nutrient delivery. You can see a few recommended soil and other media products here.

You’ll probably also need a pot. The pot you choose should be at least one-gallon and allow excess water to drain off. Once you’ve added the media to your pot and have your seeds, you’re ready to plant. Just insert your finger into the soil to create a ½ inch to 1 inch divot and place your popped seed inside. Cover and water appropriately. We recommend fabric pots which are reusable, lightweight, and drain very well.

The last thing to consider when planting your germinated seeds is where are you going to grow them? Are you growing in a closet? Do you have a dedicated space somewhere in your home? If not, a grow tent is an excellent option for creating a highly controlled growing environment. Grow tents are easy to assemble and their reflective interior maximize light efficiency. There are even kits that will provide everything you need including a fan to generate necessary air flow and a filter that will help keep the smell of your plants from wafting from your grow tent into your personal space. Even if you don’t mind the smell, your neighbors might! You can check out this grow tent configurator which will guide you through the best grow tent set up depending on the space you have available and the number of plants you plant to grow. You can check out our recommended soil media here. Need a pot? Check these out.

4. Cannabis Grow Lights and the Vegetative Phase

The vegetative stage is where your plants bulk up and develop the frame necessary to support the eventual flowers. As mentioned in the genetics portion of this guide, your seed choice will influence the amount of care and attention you’ll need to provide. If you choose regular seeds, the vegetative stage of cannabis growth will require an 18-6 light cycle (18 hours on and 6 hours off). The size of your grow will determine your light requirements and there are many choices. I tend to recommend LED lighting because they’re energy efficient and produce less heat than other types of grow lights, which will help keep overall temperatures down in your grow. Check out a few LED recommendations for your cannabis grow here. Keep in mind the size of the light if you’re using a grow tent to assure it will fit.

Fluence is a great LED brand, but far from your only option.

The vegetative phase is also where you begin monitoring the sex of your plants and then remove and destroy the males as soon as you identify them. If you have access to female clones, this step isn’t necessary, but it will be if you grow cannabis from seeds. You can check out our guide to sexing your plants here. Again, this is a step you need to take when growing from regular seeds. If you use feminized seeds you can be nearly 100% certain that all of your plants are female (1 in 1000 feminized seeds may turn out male).

See also  How To Tell If Cannabis Seeds Are Bad

Since the vegetative stage of growth is where your plant will bulk up and develop its framework, you’ll want to make sure you use some quality nutrients to ensure your cannabis grows strong and healthy. Click here for our recommendations.

A nutrient bundle is a great way to save money

Last but not least, an important consideration during the vegetative stage is pest control. It’s important that you monitor for pests and diseases during the duration of your grow to deal with any problems before they reach crisis level and threaten your crop. Fortunately, close monitoring and cleanliness will help you avoid most of these problems, but should you encounter pests or disease, there are a number of great, organic products that can take care of nearly any problem. And don’t worry, we recommend only products suitable for treating consumable plants. Check them out here.

5. Flowering & Nutrients

The flowering stage is when your cannabis plants will develop their buds. Again, if you choose to grow from “regular” seeds, you’ll change up the light cycle from the 18-6 you used in veg to a 12-12 cycle (12 hours on and 12 hours off up until harvest); autoflowering varieties won’t require this change as again, they flower when they are mature enough.

During this stage you are going to want to continue monitoring for pests and also add a “bloom formula” nutrients to help make big healthy buds. See our recommendations for your cannabis grow here.

6. Cannabis Harvest

A week or so before harvest you’re going to want to “flush” your media. This simply means that you stop feeding your plant nutrients and give only water. This allows your cannabis to use up all the available nutrients remaining in the soil so they won’t end up in your buds. Also, you can expect a degree of leaf yellowing during this final week as your plant converts its available resources into energy for continued bud development.

You can see our full article on when to harvest your buds here, but generally, you can determine when your buds are ready for harvest by examining the trichomes. You can use microscope to get a close up look at the trichomes. Clear trichomes generally mean it’s too early to harvest and your buds won’t be as potent. Milky white-amber trichomes means you are ready to harvest and can expect decent buds. If you wait longer, until the trichomes are completely amber in color, you’ll get a stronger psychoactive effect as CBD levels decline.

Harvesting generally requires scissors or gardening shears to remove your colas (bud sites) from your cannabis plants. Be gentle as to not disturb the potent trichomes.

7. Drying and Curing

Before we go into drying and curing, we should quickly revisit trimming. Trimming can be done before drying (wet trimming) or after drying (dry trimming). Either method is fine and will depend on your preference. The goal when trimming isn’t only to make your buds pretty by removing any fan leaves (which it definitely does) but also to collect the “sugar leaves” that surround your buds. Don’t get rid of these sugar leaves. They’re great for extracts, hash making, and in a pinch you can even smoke them, though smoking them will be a bit harsh.

With proper temperature and humidity control, you’ll be able to dry your cannabis in the same space you grew it. Most growers I’ve spoken with dry for a minimum of one week and often up to 10-14 days. There are a number of drying racks available that will allow you to spread out your buds for even drying. If you choose to dry trim, you’ll do this after drying but before curing.

Curing is a specialized drying process that comes after the initial drying and trimming. The goal is to cure the buds much like you would with homegrown herbs. You want a dark space with low humidity. You can cure in a glass jar, plastic tub, or a specially designed c-vault. You’re going to want to “burp” your container daily to remove any moisture remaining in your buds, and this is accomplished by simply opening the container and closing it again. The curing process can last anywhere from a few days to a couple weeks. Check out a few helpful products here.

A hanging mesh drying rack is only one option for your drying needs.

The CVault is designed to provide complete darkness and airtight bud curing.

So are you ready to grow cannabis from seeds? Hopefully we provided some good tips for media, lighting, and grow tents to get you started. We’d love to hear from you regarding your grow so please leave a comment in the survey below or click one of the “Join Now” buttons at the top and bottom of this article to get into our private, vetted, professional forum. And don’t forget to check out Growers Network University! See you there and happy growing!

A few questions about mail order cannabis seeds

Where can I buy cannabis seeds safely?

There are a number of good seed vendors out there. Our recommendations are established companies with great customer reviews so you know you’re purchasing quality cannabis seeds.

Is it safe to order cannabis seeds through the mail?

People always wonder about the legal risk of purchasing cannabis seeds through the mail. Legitimate seed vendors (including those we recommend) ship discreetly to most locations. Seeds can be stopped by customs, but this doesn’t happen often. You also want to make sure that wherever you decide to purchase your seeds will also ship to your country. This information should be transparent and available on the vendor’s website.

Before You Purchase

Questions you should ask before purchasing Cannabis seeds online
  • Do you recognize the name of the cannabis seed company name? Branding goes a long way and a recognized, established brand is something to consider when purchasing Cannabis seeds online.
  • What are customers saying in their reviews? Did they receive their seeds? Were they high quality?
    Researching these questions will increase your chances of being happy with your Cannabis seed purchase.
  • Do you know anybody who has used them as their Cannabis seed supplier?
    Word of mouth recommendations are very powerful in the cannabis community. Someone else’s first hand experience can be helpful if you aren’t sure about which brand of Cannabis seeds to purchase.
  • What’s their return or refund policy?
    A good seed shop should at least have generally positive reviews and a well-defined refund or exchange policy.

Beware of cannabis Seed Scams

If you’re contacted via social media to purchase seeds, chances are you’ve been targeted for a scam. We recommend using established cannabis seed vendors such as those linked above.

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