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method of growing weed without seeds

Method of growing weed without seeds

An Overview to the Major Methods of Growing Marijuana.

There are many different ways to grow medical marijuana. Which method is right for you depends upon your circumstances and what you can manage to do. This guide will give you a good summary of the various methods and a short summary of their advantages and disadvantages.

Any of these methods will yield good results for a dedicated gardener. However, what you get out of it will depend upon what you put into it. A crop is subject to all kinds of threats, ranging from lack of water, to improper fertilizer, to bugs and animals that will eat it. If you really want good, high-grade marijuana you will have to put a little work into it, no matter which method you use.

The first step, of course, is to get some seeds or clones to get you started. See How To Get Marijuana Seeds and Clones.

The growing methods are:

1. Plain dirt

  • It is usually easier and cheaper than any other method.

  • You can use standard nursery store fertilizers.

  • Unless you get commercial growing soil, the soil can be of uncertain quality. You could lose a crop or have poor results because the minerals and nutrients in the soil are out of balance.

  • Yields will probably not be as great as you will get with other methods.

2. Coco Fiber/Rock Wool

Instead of using soil as a medium to hold the roots, you can use an inert medium — something that does not have the quality problems found with ordinary soil.

  • Almost as easy as growing marijuana in plain soil.

  • Better yields than soil.

  • Almost as cheap and simple as plain soil.

  • The process is generally cleaner with fewer bugs and mess..

  • Requires special fertilizers which are more expensive.

  • Requires the purchase of coco fiber. This is not very expensive, but you may have to find a local store that stocks it.

3. Hydroponics

Hydroponics consists of growing the plants in something such as gravel, with no soil or vegetable matter in the mix. The gravel will be contained in pots or troughs. Water with a light mix of special fertilizers will be either poured through the gravel, or the troughs will be flooded with the fertilizer several times throughout the day.

If you view roots grown in hydroponics versus those grown in plain soil, you will see an immediate difference. While roots grown in soil have a big tap root, the roots grown in hydroponics will have no major tap root, but will consist of a huge bunch of small, clean white hairs.

  • Much bigger yields than the previous methods.

  • Cleaner because no soil is used.

  • Costs a lot more because it requires troughs, pumps, and reservoirs to hold the water/fertilizer mixture.

  • Requires a lot more labor. You will need to monitor Ph and nutrient levels to make sure they stay within proper limits.

  • It takes more equipment. Therefore it may take more room.

4. Aeroponics

Aeroponics consists of growing roots in plain air. The plants are held in a mesh basket, hanging out in the air, and the water and fertilizer is continuously sprayed over the roots. This method produces roots that are even more amazing than hydroponics.

How to Grow Weed

An Essential Step by Step Guide on How to Grow Cannabis Indoors

There are a million reasons to grow weed, but the most popular ideas are to save money and to learn a new skill.

Once you’ve made up your mind, the rabbit hole of growing cannabis is long and deep.

Join us for an in-depth journey into the world of cannabis cultivation and how to grow weed.

Work Out a Plan for your Cannabis Grow Room

How to Grow Medical Cannabis

What is Photoperiodism and the Infamous 12/12?

The Danger of Hermaphrodites

Why We Grow Cannabis Sinsemilla

Male Cannabis

Equipment and Techniques Required to Grow Cannabis

How to Grow Cannabis Outdoors

Plant Nutrition

Water Retention

Hydroponic Cannabis Growing

Soil-Based Cultivation

Cannabis Growth Techniques

Cannabis Seeds

Cannabis Clones

The Juvenile Stage

Work Out a Plan for your Cannabis Grow Room

Before you begin imagining yourself swimming in ounces of aromatic cannabis flowers – you need to formulate a plan.

Without a clear plan, your adventure in cannabis cultivation will turn into a misadventure at every turn.

The amount of work that goes into a clean marijuana operation that’s both efficient and fruitful is difficult to attain without proper planning.

Once you’ve committed to the idea of growing weed – it’s time to sketch out the details. Once you’ve concluded that the general details are complete, it’s time to put thoughts into action – and action into tangible marijuana flowers.

First, you’ll need to understand the laws that govern your state or jurisdiction. You won’t be able to begin in the first place if growing marijuana is outlawed in your region.

Breaking the law has serious consequences – so be aware of local laws regarding cannabis cultivation.

Second, it’s imperative that you know how many weed plants you’ll grow. This is a loaded idea because it implies many different aspects of cannabis. Which strain will you grow?

What are its’ growth characteristics? How many cannabis plants are you legally allowed to cultivate? How much space do you have in your indoor grow room or outdoor plot?

Once you answered this myriad of questions – you can begin crafting a plan that you must stick to. Remember, growing weed is no walk-in-the-park, so be prepared to make significant investments to get your operation up to speed.

Almost anyone can grow cannabis – it’s a weed. However, growing high-quality cannabis that you want to smoke is in an entirely different league. Luckily, we’re here to help you achieve your goals and teach you how to grow weed.

How to Grow Medical Cannabis

It’s a good idea to figure out if you reside in a state that allows medicinal or recreational cannabis cultivation.

Many states that allow medical marijuana allow prescription holders to cultivate up to 6 mature cannabis plants.

However, it’s possible that this number can be increased if you live with someone else that also has a medical license. So, if you and your partner each have a medical license, then the total plant count is 12 mature marijuana plants.

Regardless, it’s essential that you check your region for information on the laws governing medical cannabis. A few minutes of scanning Google will be well worth avoiding potentially thousands of dollars in fines, or worse – jail time.

Once you’ve done your research, growing medical cannabis is no different than growing any type of cannabis. It only has the medical term because it’s intended to be used for medical reasons, such as pain, epilepsy, cancer, and more.

How to Grow Weed for Recreational use

You can grow recreational cannabis in states that allow marijuana use without a medical license. Recreational cannabis means you can enjoy marijuana without needing to prove any type of condition.

In other words, you won’t need to sugarcoat your reasoning, other than the desire to get high.

What is Photoperiodism and the Infamous 12/12?

Before we jump into our guide on how to grow weed, there are a few aspects of the cannabis plant that you must know.

Photoperiodism is a response of a plant according to changes in light hours – primarily due to seasonal changes.

In other words, cannabis plants are sensitive to the light change from summer to fall.

During the summer, outdoor cannabis crops flourish under the intense rays of the sun. Summer months have the longest daylight hours of the four seasons, which is why cannabis plants do their growing during this time.

However, as the summer months wane, the sun’s light no longer lingers for a long time. As fall descends, deciduous trees mark the change in temperature and daylight. It’s at this transitional point that cannabis plants respond to a lack of light by flowering.

When cannabis plants flower, they are responding to the impending cold temperatures on the horizon. They also know that their time on this planet is nearing an end, and it’s essential that they produce the next generation of marijuana seeds.

This is why cannabis growers came up with the infamous 12/12 light schedule. 12/12 signifies 12-hours of daylight and 12-hours of darkness.

It’s been found that cannabis plants that are kept under 18-24-hours of continuous light will remain in the vegetative state for an untold amount of years.

However, once the lighting is changed to 12-hours of light and 12-hours of darkness within 24-hours, the cannabis plant immediately understands it’s time to flower.

The Danger of Hermaphrodites

Now that you understand how cannabis plants enter the flowering stage, you should be aware of the consequences if done incorrectly.

Hermaphrodites are when female cannabis plants exhibit both female and male sex organs.

Female cannabis plants produce male flowers because of stress – usually in the form of a light leak during night time hours or a sudden power outage during the day.

The problem with hermaphrodite female flowers is that the male flower contains viable pollen. If the male flower releases pollen onto your female cannabis plant – the resulting flower will be filled with seeds.

Even if you want seeds in your flowers, the resulting seeds will be tainted by hermaphrodite genetics, which means they are unstable – especially for breeding.

There’s a reason why growers are terrified of the word “hermies” because it means there are potentially millions of viable pollen grains in the grow room wreaking havoc on their prized flowers.

Why We Grow Cannabis Sinsemilla

The word sinsemilla means without seeds. When pollination is avoided, cannabis flowers grow larger because the plant is searching for viable pollen.

The flower grows with the sole hope that it will eventually find male pollen grains.

Cannabis cultivators use this desperate act by female cannabis plants to their advantage, which results in a large yield.

Not only does this type of growing allow for larger yields, but it also keeps flowers seedless. There’s nothing worse than having to pick out thousands of seeds from a cannabis bud – especially when you’re rolling a joint.

Seeded cannabis flowers fetch a low price on the market, which is also why cannabis cultivators go to great lengths to avoid any form of pollination.

The process of growing sinsemilla marijuana flowers starts by culling all males from your garden. Although it will take time to spot a sneaky male in a roomful of females – you will notice once your plants become sexually mature.

Once your grow room contains only females, you can switch over to the infamous 12/12 lighting schedule to begin the flowering process.

Male Cannabis

Although male cannabis plants are completely useless and dangerous when cultivating marijuana flowers – they are essential to the breeding process.

Without males, new and exciting strains wouldn’t be a possibility.

So, although male flowers are useless on one end of cannabis cultivation, they are the cornerstone of another spectrum. Cannabis breeders use prized males to input strong genetics into their crosses.

Ultimately, your view of male cannabis plants will depend on your end goal – are you breeding new strains, or are you producing marijuana flowers? Depending on your answer, you’ll either seek male plants or despise them.

Equipment and Techniques Required to Grow Cannabis

Now that you understand the basic elements behind growing cannabis.

It’s time to familiarize yourself with the cultivation techniques and equipment so that you can truly learn the art of how to grow weed.

How to Grow Weed Indoors

Growing weed indoors requires any amount of space – indoors. This can either be a small grow tent or a fully outfitted warehouse. When growing cannabis indoors, you’ll rely on the artificial environment that you provide.

Natural rainfall, sunlight, wind, and bugs will no longer factor into your concerns; however, your indoor environment will pose new issues that you’ll have to battle continuously.

Issues such as high temperatures and humidity pose a common threat to indoor cannabis plants. The same goes for low temperatures and humidity. In general, growers should aim for a comfortable 70-85 °F and 45-60% relative humidity.

It’s essential that you have a digital thermometer/hygrometer combination device that allows you to monitor your relative humidity and temperature throughout the day.

Growing weed indoors means you will supply all the nutrition, water, medium for growth, light, and even CO2. However, let’s start with the three most important factors when growing indoors: lighting, ventilation, and odor management.


Lighting is one of the most important aspects when growing cannabis indoors. Aside from nutrition and water, light is converted by plants into usable energy. Photosynthesis is the necessary process that the vast majority of plants use to live.

With this in mind, the most popular types of light for indoor cannabis cultivation are HIDs and LEDs.

HIDs (High-Intensity Discharge) come in two types – metal halide (MH) and high-pressure sodium (HPS). Metal Halides are known for their blue/white light that’s ideal for the vegetative stage of growth.

Alternatively, HPS discharges an orange/red hue that’s reminiscent of dusk, which is normally used for the flowering phase.

HIDs are incredibly bright and are perfectly suited to indoor cannabis cultivation. Their sheer amount of wattage will allow your cannabis crop to bask in their light, but this comes at a cost.

Although HIDs are outrageously bright, they are very expensive to power month after month. Common wattages are 600-watts and 1,000-watts. This means that they draw 600 to 1,000-watts of power directly from the outlet.

Depending on electricity rates in your area, 1,000-watts of power per month on an 18/6 light schedule can range from $250-500+.

On top of an expensive electricity bill, HIDs produce a significant amount of heat. This heat exacerbates the problem of electricity by requiring additional AC to cool down your grow room.

If you allow your grow room to become too hot, then your cannabis crop will suffer.

Alternatively, LEDs emit far less light but reduce your electricity bill by half. Light-emitting diodes are much more efficient because they emit little to no heat, and last far longer than HID bulbs.

For most new growers, LEDs are an excellent trade-off because they will keep your electricity bills down while allowing you the ideal environment for focusing on growing your weed.

However, LEDs come at a cost, and they are normally much more expensive than HID grow light systems.

Furthermore, since LEDs emit very little heat, they can be placed far closer to the plant canopy. HIDs, on the other hand, require at least 12-20” between the base of the light and the top of the plant canopy.

If you decide to grow indoors, then your lighting system should be a primary concern. If you purchase an LED grow light system, then you’ll need to be ready for a high upfront cost.

If you choose a HID grow light system, then you’ll need to ensure your grow room has proper ventilation and cooling.


Ventilation is an absolute must when growing cannabis indoors. If you think that providing ample light will keep your marijuana plant satisfied – think again.

Photosynthesis is the process of converting carbon dioxide and water into usable energy – therefore, you need a constant supply of air.

Luckily, there is a wide range of tools to outfit your ventilation system. Squirrel fans, inline fans, oscillating fans, clip fans, stationary fans, and even PC fans are used to simulate wind inside enclosed spaces.

It’s essential to pull fresh air from an outside source and bring it directly to your cannabis crop. Additionally, it’s necessary to then remove hot air from the grow room to the outside.

The only way to complete this process of give-and-take is by building an efficient ventilation system.

In general, the layout is thus: an inline fan feeds fresh air into ducts, which leads into the grow room. The lighting and fresh air give the necessary components for cannabis plants to photosynthesize.

Once the process is complete, oxygen is emitted. However, this process comes at the cost of heat.

As the hot air rises, your grow rooms’ temperature begins to increase. It’s now your out-take system’s task to remove the hot air. Typically, you’ll connect your carbon filter to your exhaust fan (inline fan), and this will travel through ducting.

Your out-take ventilation system should route all hot air to the outside.

Although it sounds simple, the layout of your grow room will dictate how easy or difficult your ventilation system will be to create. It’s for this reason that the most ideal growing space is one that has easy access to windows, ducts, or an attic.

Odor Management

Even if you live in a state that allows recreational cannabis, not all of us want our business to be known – or smelled. This is where odor management comes in, and when you’re learning how to grow weed, this subject is usually glossed over.

Carbon filters are large metal tubes filled with activated virgin carbon pellets. When an odor or any type of impurity passes over the bed of carbon, a chemical reaction known as adsorption occurs.

This reaction latches onto the pungent odor that marijuana plants produce, which helps to keep your grow room from smelling like a dead skunk.

The primary way to make sure your carbon filter works properly is by attaching an inline fan to it. A carbon filter and inline fan combo are the two main components of an out-take ventilation system that we discussed in the previous section.

As the inline fan pulls air through the carbon filter, all unwanted odors will be dragged along through the bed of activated carbon.
If you require discretion while growing cannabis, carbon filters are an absolute necessity.

Grow your own medical marijuana without soil

Israeli startup Leaf is about to launch pre-sales of a smart home cultivation system as additional US states vote to legalize cannabis.

With seven more US states voting to legalize forms of medical or recreational marijuana use on November 8, the upcoming rollout of the Leaf “plug-n-plant” system for growing the crop at home couldn’t have been better timed.

“It’s an exciting time to launch,” CEO and cofounder Jonathan (Yoni) Ofir tells ISRAEL21c. “We’re seeing a very interesting trend even among traditionally conservative states, and it could be the beginning of the end of the federal ban on cannabis. From an industry perspective, this makes our product even more appealing to entrepreneurs and investors.”

Leaf looks like a small refrigerator (2 feet by 4 feet) but it’s actually a sophisticated automatic cannabis-cultivation system.

“On average you will yield 4 ounces of high-quality, pesticide-free medicine every three months,” says Ofir. “Our beta testers have grown almost double that in certain cases.”

You don’t need pots, soil or even a green thumb. Water, light, acidity, temperature, humidity and nutrients all are monitored by sensors and controlled by a smartphone app. The system dries the leaves at the end of the grow cycle so they’re fully ready for consumption.

An embedded HD camera provides a live stream of images during the process for users to share via the app, which also offers explanatory video clips.

The Leaf system is available online in the near future at a preorder price of $2,990 through early 2017, for shipping next September. A $300 deposit is required; the balance will be collected at time of shipment and the deposit can be refunded up until that time.

“Initially we will be shipping to the USA and Canada,” says Ofir. “We are currently working on international distribution partnerships to be able to ship worldwide.”

Leaf will realize additional revenues from renewables: carbon filters to keep odors from escaping the unit, and disposable nutrient pods from Advanced Nutrients, one of Leaf’s strategic investors. The pods fit into the machine like ink cartridges in a printer.

Market opportunity

Ofir was born to Israeli parents in California, where marijuana was legalized for medical use in 1996 and is now approved for recreational use as well. The family moved back to Israel in 2000, when he was 11.

His previous startup, Alcohoot, invented a smartphone breathalyzer and was sold to an American company a couple of years ago. That freed up Ofir to work on another project.

“I had a [medical marijuana] growing license and I realized there were a lot of things I could automate about the process, so I started building the Leaf prototype for myself,” he relates. “Many people were interested in it and we recognized a market opportunity. That’s how we started and it’s taken off from there.”

Ofir and cofounder Eran Mordechay, Leaf’s CTO, raised $2 million in their first funding round after establishing the company last year.

Leaf has about 20 employees, including five horticulturalists doing growth and nutrient testing in the company headquarters outside Boulder, Colorado, where growing cannabis is legal. “We plan to expand that office tremendously as we start sales and customer service,” says Ofir.

All research and development activities are based in Tel Aviv. Ofir says this is where he and Mordechay had all the agricultural, engineering, industrial design and medical research resources they needed. Israel is renowned for advanced cannabis research.

“It was extremely easy to recruit top-tier employees who are really passionate about what we’re doing,” Ofir tells ISRAEL21c.

“We always had a scientific approach and our product has been built to be a sort of lab tool where you can change parameters to create the very best medicine for yourself, chemical- and pesticide-free.”

As the shifting winds in the United States attest, growing cannabis is no longer about counterculture hippies or fringe medical practitioners.

“The one commonality in Leaf’s market is people who use cannabis on a regular basis, but besides that it spans across every age group, gender and profession,” says Ofir.

For more information, click here.

Update: Some 1,500 units of the Leaf system, sold for $3,000 apiece, were ready for shipping in spring 2018.

See also  beginners guide to growing weed from seed