How To Grow Marijuana From Seed

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It’s possible to grow marijuana at home, both indoors and outdoors. However, there are many things you need to know before buying your first cannabis seeds. Growing marijuana starting from seeds can be a daunting task. Luckily we've put together the ultimate guide for growing weed from seeds! 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

How to Grow Marijuana: The Essential Guide for Beginners

Growing your own marijuana is possible, whether you’d like to cultivate an outdoor garden or choose an indoor grow medium. Learn how to grow marijuana indoors and outdoors in our step-by-step guide for beginner cultivators.

Determine Legal Status

One key step to take before starting your marijuana garden is to determine the legal status of cannabis cultivation in your state, including how many plants you are allowed to grow . Some states place a limit on just two cannabis plants, while others may allow as many as 16. Stay informed of the ever-changing laws in your jurisdiction.

How Much It Costs

The start-up costs for cannabis cultivation include materials like nutrition for the plant, grow lights (if indoors), basic gardening tools, and more. For some people, the start-up costs may range in the thousands, but if you’re on a budget, it’s possible to start growing marijuana at home for as little as $200 .

Choose a Location: Indoors vs. Outdoors

Many new growers choose to cultivate marijuana indoors, for practical reasons including discretion. However, there are benefits and drawbacks to indoor and outdoor set-ups.

Growing Marijuana Outdoors

Growing cannabis outdoors can be quite the challenge, even if nature’s doing a lot of the work (i.e. providing light, water, and soil, although you can use your own pots and soil as well). This is because you need to take many more variables into consideration, and you also have to be in the right geographic location to grow cannabis outdoors to its best. Those who do not live in equatorial, Mediterranean, or temperate climates with a well-defined spring and summer season may find it extremely difficult if not impossible to grow outdoors.

However, there are few things more satisfying than cannabis grown outdoors, and many people prefer the effects it can give. Also, if you live in the right environment, have an understanding of your local climate, and have the right space to do so, growing cannabis outdoors can become rather simple, on top of producing bumper yields due to the amount of space available. Assuming there are no drastic weather changes, you merely have to watch your cannabis grow and do nothing but give your plants a little TLC along the way (e.g. a little pruning).

Best Strains for Outdoor Growing
  • Early Queen / Early Skunk Feminized
  • Gorilla Glue #4 Autoflower
  • Kyle’s Skywalker OG
  • Skywalker Haze by Dutch Passion
  • Nikki and Swami’s Lemon OG Feminized
  • Steve’s Dream Queen Feminized
  • CBD Mango Feminized

Growing Marijuana Indoors

Indoor growing is usually best suited for beginners as you can control all the variables. Using soil or a mixture of coco coir and organic nutrients as the medium, a set of 400- to 600-watt lights, a grow tent and some pots, you can successfully grow cannabis indoors without too much hassle.

Best Strains for Indoor Growing

Here are some of the best strains for beginners interested in growing cannabis indoors:

  • Northern Lights (NL)
  • Skunk #1
  • Blue Dream
  • Cheese/Blue Cheese
  • Blueberry
  • OG Kush

In addition to these hybrid strains, autoflowering strains and ruderalis strains are recommended for novice indoor growers.

Using a Greenhouse

The greenhouse can meld together the advantages of both indoor and outdoor cannabis growing. Greenhouses can be covered to produce true dark time, and the cannabis is kept in a protective environment which can reduce the chances of pests (though not as much as an indoor grow).

On top of this, greenhouses allow in natural light, allowing for the full development of the cannabis plant’s cannabinoids and terpenes. Greenhouse growing also uses far fewer resources compared to indoor grows, so less energy is spent on lights and fans. The enclosed environment can also make it easier to hide from prying eyes, and you can use other plants to camouflage the cannabis.

However, greenhouse grows are prone to the seasons, and a good amount of natural light is required. Temperatures and humidity levels are also harder to control. Still, those who want to step into the world of outdoor growing, and who are in a suitable environment, ought to consider a greenhouse.

Decide How You’ll Grow

You have a number of choices for a cannabis grow medium. Here are some of the most common ways to cultivate cannabis, along with the advantages and disadvantages of each.

With outdoor grows, you can use natural soil and sunlight to do most of the work, and many people prefer the results of outdoor cannabis with regard to its smell, taste, and effect. However, growing outdoors can be legally risky, and there are many more variables to consider.

Indoor grows can also utilize soil, and many prefer to use soil as it is a natural source of nutrients and you do not need to add too many extra nutrients from other sources. Good soil is also quite readily available at many gardening stores.

Advantages
  • Cannabis has better taste, smell, and effects.
Drawbacks
  • Weather issues.
  • Legal issues.
  • Pests.
  • Thieves.
  • Wild animals.
  • Requires careful balance of water and sunlight.
  • Potentially only two yields per year (depending on your climate).
  • Overall challenging.

Coco Coir

Coco coir is a natural fiber extracted from the outer husk of the coconut. It’s a growing medium that combines elements of both soil and hydroponic growing. It can be combined with soil or used on its own and is an ideal growing medium for beginners.

Advantages
  • Excellent water retention.
  • Reliable drainage.
  • Lots of air.
  • Roots spend less time searching for food, as you are providing it via nutrient water.
  • Coco coir has a neutral pH range of 5.2-6.8 — ideal for growing cannabis.
  • Reduces the risk of pests, fungi, and other harmful pathogens attacking your plant.
  • Environmentally friendly, and can be reused if prepared properly for your next growth cycle.
Drawbacks
  • Coir bales are often treated with chemicals to ensure that they don’t get infected with harmful pathogens, so read the label or check the manufacturer’s website for information on the coir you’re using to ensure that the chemicals won’t interfere with your plant growth cycle
  • You’ll need coco coir-specific nutrients to boost calcium, magnesium, and iron levels in the plant
  • Some types of coco coir may have a high salt content due to being rinsed in saltwater – ensure the coir has been rinsed with fresh water if this is the case
  • You’ll need to feed the plant nutrients yourself

Hydroponics

Hydroponics is where you grow cannabis using mineral nutrient solutions in a water solvent. Basically, the plant will usually be in a pot surrounded by an inert growing medium (e.g. perlite, vermiculite, clay aggregate, gravel, or sand) and have a nutrient solution pumped through the inert material and into the plant (continuous-flow solution culture). In some methods, the plant is kept in a reservoir of nutrients (static solution culture).

Advantages
  • Large, powerful yields.
Drawbacks
  • Precise nutrient requirements.
  • Knowledge of different strains is required for optimum growth.
  • Aerated water is necessary.
  • Better-suited to experienced growers.

Aeroponic

Aeroponics is similar to hydroponics in many ways, except the plant’s roots are kept in an aerated chamber saturated with fine drops of nutrient solution. The roots are periodically wetted with a fine mist of atomized nutrients.

Aeroponic grows require fewer nutrients and less water compared to hydroponic grows, and unlike hydroponically-grown plants can be transferred to soil mediums without shocking the plant.

Advantages
  • High, efficient yields.
Drawbacks
  • High initial cost.
  • Constant supervision is necessary.
  • Excessive time and stress.

Aquaponics

Aquaponics is a combination of hydroponics and aquaculture which is the growing of fish and other aquatic creatures in a tank. Aquaponics is a symbiotic environment where the aquatic animals’ discharge or waste feeds the plants growing on top, and the plants remove toxic levels of waste from accumulating in the water. Aquaponics systems have been in use for many years, but it is arguable that they weren’t perfected until relatively recently.

Advantages
  • Low water usage.
  • No plant feed needed.
  • Little to no chemical usage.
  • Less susceptibility to pests and diseases.
  • Cannabis plants grow quite well in aquaponic systems.
Drawbacks
  • Smaller area, so fewer plants.
  • High electricity outputs.
  • High maintenance.
  • More complex, so a greater number of points of failure.
  • High costs.

Growing Marijuana From Seeds Step by Step

There are several steps to follow to grow marijuana from seeds. After you select your marijuana seeds, you will carry the cannabis plant through each stage of growth, from germination through to harvest.

Germinate

Spray two to four sheets of paper towels (kitchen towels) with some water so it’s damp but not soaking, put a seed in between them and onto a plate, and wait for a taproot to emerge. Keep the room temperature somewhere between 70 and 90˚F.

Transplant

Transfer the germinated seed to a small pot of soil or whatever growth space you are using. During the seedling stage, it will produce two leaves that open outward from the stem to start receiving sunlight.

This is when you start seeing a mini cannabis plant. Seedlings should be kept at 77˚F with a humidity of around 60%. Cannabis likes a light cycle of 18-hours of white light per day once the leaves have emerged. Use a nitrogen-rich fertilizer at this point.

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Vegetative Stage

By this time, you will need to transfer your mature seedling to a larger pot. You can tell when the seedling is ready to be transferred, as the roots will outgrow the plant pot. Cannabis plants grow rapidly at this stage as they take on more nutrients and carbon dioxide.

You can also do some vital checks at this point. One is checking for the sex of the plant. Female plants will start developing two white pistils. Male plants grow pollen sacs. If you see these sacs, remove the plant from the vicinity before it pollinates the females and ruins your harvest.

Keep the temperature between 68 and 77˚F, and the humidity between 50% and 70%. 18 hours of light and 6 hours of dark. Light wattage of around and 125 Watts. Cannabis ruderalis skips this stage entirely and moves onto the next stage (flowering). More nitrogen (N) than phosphorus (P) and potassium (K).

Flowering Stage

This is when the vegetative plant is fully mature and is ready to start growing buds/flowers, and you begin to see the trichomes (little white hairs that are the powerhouse of cannabinoid and terpene production).

Transfer the plant to a larger pot. The plant now needs 12 hours of light and 12 hours of dark. Indicas tend to finish flowering in about six to nine weeks and Sativas 10 to 14 weeks. Most growers tend to go for a maximum of 14 weeks’ flowering.

Prevent light leaks during dark times during the flowering stage. Light leaks can cause the plant to get stressed and produce both male and female organs (called “hermaphroditism”, “hermying”, “hermied” or “hermies”), even in feminized varieties.

Keep the temperature somewhere between 68 and 77˚ F, with the humidity at around 50 percent. Stop giving the plant nitrogen (N) now, but up the intake of phosphorus (P) and potassium (K). Once the plant is in the last week of flowering, flush the soil with distilled water and refrain from adding any more nutrients.

Harvesting

Once your plant is mature enough, it needs to be chopped and dried. But first, you need to know when to chop the plant. Some say you should harvest the plants when 70 to 90 percent of the pistils have browned.

Others look at the color of the trichomes, which start off white, then turn amber, and finally brown. Many say the ideal time to harvest is when around half (50 percent) of trichomes are amber. Too clear, and it can be too soon (but can produce a more energetic effect). Too brown, and the cannabinoids lose their potency (although some may prefer slightly less psychoactivity).

Drying

Dry your cannabis plants in a dry room away from sunlight for about seven to 14 days. Your cannabis plant will be ready for chopping into smaller buds for jarring once the plant stem snaps when you bend them. This is an extremely important stage, as a good drying process will prevent your cannabis from developing mold or mildew.

Curing

After you’ve chopped, pruned, and dried your cannabis, it is usable, but it is not at its best. You will want to put your cannabis into a mason jar (no more than 3/4 full) with an airtight seal. You will then leave it in there for two weeks to one month, opening the jar once a day to let the cannabis breathe. This will break down the sugars and chlorophyll in the bud/flower, and you will get a far more flavorsome product with a well-defined effect.

Growing Tips and Tricks

There are many helpful strategies you can employ to help your cannabis plant thrive. You can even save a dying cannabis plant . Here are some basic tips for growing cannabis to help you get the most abundant yield possible:

  • Do your research and choose the right strain.
  • Monitor daily conditions, especially light and temperature.
  • Provide adequate water.
  • Understand the life cycle of the cannabis plant.
  • Harvest at the optimal time.

How to Store Homegrown Marijuana

Storing your homegrown cannabis properly is essential to keep the harvest fresh.

Airtight containers stored in dark, cool places are ideal. Be sure to avoid exposing your cannabis to excessive light, heat, or moisture, as these elements will degrade the freshness and potency of the plant.

Frequently Asked Questions

How long does it take to fully grow a marijuana plant?

From seedling stage to harvest, the approximate time to grow a marijuana plant is 16 weeks, but this timeframe will differ depending on the strain you are growing as well as your grow medium.

Is it legal to grow marijuana?

State laws vary widely, so investigate the legal status of growing marijuana in your area before you plant your first seeds.

Is it better to grow marijuana inside or outside?

Growing cannabis indoors is easier for many beginner cultivators, as you are able to control the conditions. Growing cannabis outdoors poses more threats, including pest infestations and challenging weather conditions.

Explore the world of cannabis with a medical marijuana card. Leafwell’s doctors are here to meet with you online in our virtual clinic and get you started on the process.

Article written by

Tina Magrabi Senior Content Writer

Tina Magrabi is a writer and editor specializing in holistic health. She has written hundreds of articles for Weedmaps where she spearheaded the Ailments series on cannabis medicine. In addition, she has written extensively for the women’s health blog, SafeBirthProject, as well as print publications including Destinations Magazine and Vero’s Voice. Tina is a Yale University alumna and certified yoga instructor with a passion for the outdoors.

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Grow Weed Starting From Seed

“Don’t judge each day by the harvest you reap but by the seeds that you plant.”

Growing your own cannabis plant starting from seed is a remarkable journey. Understanding the biology of the plant is one thing, but comprehending how a little miracle bean can turn into a gigantic tree producing flowers that can affect your body and mind is nothing short of an evolutionary miracle. Or rather a co-evolutionary story of plant and human.

Start Growing Weed From Seed

Our favorite thing about growing your own weed starting from a seed , rather than a clone, is that you get to see the full life cycle and enjoy a plant that is unique, just like you. An entirely new genetic makeup will enter the world for the first time, and if you’re lucky, something remarkable might be born.

Raising a cannabis seedling , however, requires some patience, gentle hands, and a smidgen of luck. Thankfully pot seeds are remarkably vigorous because they are what’s called endosperm seeds , which means they have almost pre-formed cotyledon leaves before you even add water. Below is a brief guide on the techniques we have found yield the most success when starting seeds and raising your seedling to a healthy plant ready for transplanting. And, don’t forget, a Pot for Pot’s Complete Grow Kits take the guesswork out so you always wind up with a splendid harvest!

1) Germinating Your Cannabis Seed

To accelerate germination, soak your seed in a small container with lukewarm water and place it in a dark and warm place (like a kitchen cabinet) for 12-24 hours, but no longer. By drenching the seed, it absorbs the water thoroughly, activating the germination process on a physical and chemical level. Doing this helps to loosen the shell as it becomes a little softer making it easier for the embryo to crack it open. When your seed sinks to the bottom, it is ready to be planted, and sometimes the seed will pop out a small taproot. A seed can still be planted though if it does not sink or put out a taproot. When a seed pops a taproot (often called a tail), it becomes more vulnerable and it is better to plant it before this root emerges.

2) Planting Your Weed Seed

We see best results with seedling pellets that are made of a mix of compressed peat moss and coco husk. To expand, soak it in water for 10 to 15 minutes. Using warmer, lukewarm water, instead of cold water, will speed up the time the pellet takes to fully expand. Once your seedling pellet has absorbed enough water and has expanded to its maximum size, gently squeeze to remove excess water. The growing medium should be like a damp sponge that would not leave streaks on the table. Dig a small hole about 1/4 inch deep for your seed. Use a spoon to lift the seed out of its bath. If it has popped out a taproot be careful not to damage it. Gently place the seed into the hole and lightly cover it with dirt from the pellet. Now that you have started the germination process, your seedling will come above ground within two weeks. The older the seed, the longer it takes for it to germinate.

Want an easy-to-use starter kit for Cannabis seedlings? Check out our Seedling Starter Kit, perfect for nurturing your germinated seeds into viable, healthy plants.

3) Weed Seedling Sprouts

Perhaps the most exciting stage, your plant baby will come above ground in 1-2 weeks, with the average popping up in 5 to 7 days after planting. As your seedling comes above the soil, its shell might take a few days to fall off. It’s best to leave it alone, nature has the job covered. If it does not come above ground after about two weeks, the chance of success is dramatically reduced, and it’s best to try again. Even the best seeds have an 85% germination rate. When your seedling comes above ground, it is going to want to see a direct light source.

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Save Money – No Tent Needed

Organic Cannabis Soil Recipe

Avoid Common Mistakes

4) Lighting for Your Cannabis Seedling

Marijuana seedlings require a medium amount of light — enough to get energy to grow, but not too much light that to get burned. Leaving your seedling in direct sunlight will cause the leaves to curl, while too little light will cause the seedling to stretch. If growing outside, seedlings want to see a direct light source to stop them stretching. If inside, a sunny windowsill with more than half a day of sunlight works wonders. Otherwise, 24 to 30 inches from a grow light is an excellent supplement. Your seedling should not stretch more than 6 inches at most.

5) Watering Your Cannabis Seedling

For cannabis plants young and old, it’s best to use bottled, distilled, or filtered water as these are without chlorine. If using tap water, let it sit for 48 to 96 hours before watering to dissipate any chlorine. Chlorine can also be eliminated by boiling for 20 minutes. Under normal conditions, after soaking your seedling pellet, it should contain all the moisture your plant needs before it comes above ground. As it grows, it will only need about a shot glass worth of water at most per week to keep the medium damp. Seedlings don’t drink a lot of water, which makes sense given their size. Your plant will do better in a growing medium which is damp but not soaking wet. Overwatering is just as deadly as drying out!

Damping off happens when the seedling is in too moist of an environment. The young plant’s immune system is not strong enough to ward off a fungus that results in the plant rotting from the bottom of the stem. When this happens, the plant will bend over and die if not treated. To help fight the infection, lightly spray a 0.5% solution of hydrogen peroxide around the affected area. However, the best option is to avoid this by not exposing your seedling to too much moisture.

6) First Cannabis Seedling Leaves & Hardening Off

The first set of leaves to come above ground are called the cotyledons . These little leaves are packed with energy and will grow to about 1/4 in in size before eventually falling off. Your second leaves to emerge will be single blades and will be serrated, looking like regular pot leaves.

They will become several inches in length. During their growth your first actual set of leaves will appear. These are typically three blades. Around this time is when your plant is “hardening off”. You will notice that the stem will start to develop a thicker skin and harden off. As the leaves of the plant get bigger, they can gradually handle more sunlight, so move it into more direct light– the more light the better!

7) Transplanting Cannabis Seedlings

About 10 days after germination, when the baby cannabis plant has hardened off, roots will start emerging from the bottom of your seedling pellet and the plant is ready to be transplanted into a bigger pot. Be very careful not to damage the roots during this stage. Any stress will slow its growth.

Dig a small hole in your bigger pot for the seedling, sprinkle some rooting booster in the bottom of the hole then carefully plant the whole seedling pellet holding your weed baby.

Now bury so the base of its stalk is level with the topsoil. Give it a watering to set the roots in the ground, then hold off watering until you pick up the pot and it feels light in weight.

Are you ready to transplant your seedlings? Shop our best selection of cannabis starter growing kits from small to large pots.

8. Separating the Girls from the Boys

At about 4-6 weeks into your plant’s growth , you’ll be able to determine the sex of the plant. You’ll want to separate and dispose of any male plants. This is an important step for growing marijuana because the female plants are more potent and valuable. You also don’t want male plants to compromise the growth of your female plants.

Why Do You Only Want Female Weed Plants?

Only female marijuana plants produce THC buds that are high in potency. You want to make sure your Cannabis plants are all female. If you have a male plant, it can fertilize the other female plants, and they will work to produce seeds instead of flowers and nugs.

It’s essential as a grower to know the difference between a female and a male plant so that you can remove the male plants before they contaminate your crop . Unfortunately, you have a 50/50 chance of getting a male plant when growing a plant from a seed from a nug.

There is a massive market for seeds that will only grow into female plants. But even these seeds are not a 100% guarantee you’re going to get a female plant. To ensure a good crop, you’ll want to germinate and plant many marijuana seeds and then separate the females from the males when the plants begin to show their sexuality.

How to Tell if a Weed Seed is Male or Female

As your plant matures sexually, it will develop between its nodes. Nodes are the area of the plant where the branches connect to the plant’s stalk. The distinguishing characteristics that will help you identify your plant’s gender:

  • Male Plants : Small pollen sacs will cluster in the nodes.
  • Female Plants : Stigmas will develop in the nodes. The stigmas can catch the pollen of male plants. Stigmas have hair-like veins that will extend from the sacs in the nodes.
  • Hermaphrodite Plants : These plants have both the stigmas and pollen sacs in their nodes. These are female plants that develop both sex organs when exposed to a lot of stress.

Once you can identify the sex of your plants, you’ll want to remove the male or hermaphrodite plants because they can negatively affect the harvest of your female plants. That’s why it is crucial to germinate and grow several cannabis plants to this stage to ensure you get at least one healthy female plant.

9) Grow Weed Plant, Grow!

Suddenly, before your very eyes, the plant will transform. She will grow in height and branch out, putting off leaves and a network of branches. It is your job as the grower to meet her needs so that she can reach her full potential. With a good grow kit, this means as much light as possible and lightly watering only when she is thirsty.

This is considered your marijuana plant’s vegetive stage. The goal in this stage is to keep her healthy and allow the plant to grow as big and strong as possible so that she can hold many, many flowers.

Our complete grow kits include everything you need to go from seed to your very own supply of high grade medical cannabis.

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.

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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.

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.

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