Seeding Cannabis

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Buy Cannabis Seeds Online

Starting cannabis from seed is an affordable and fulfilling way to start growing. It all starts with germinating cannabis seeds, followed by creating the ideal warm, humid environment for seedling growth. Giving your seeds (and then the seedings) the best support from the very start, you'll set yourself up for success Explore how to begin growing marijuana plants by comparing seeds versus cuttings, and learn how to acquire the seeds you need. Does cultivating cannabis seeds interest you? Do you want help with it? This piece will discuss the best ways you can opt for when germinating your cannabis seeds.

Grow Guide: How to Start Cannabis from Seed

Starting cannabis from seed is an affordable and fulfilling way to start growing. It all starts with germinating cannabis seeds, followed by creating the ideal warm, humid environment for seedling growth.

Giving your seeds (and then the seedings) the best support from the very start, you’ll set yourself up for success come harvest. Here are the basics to growing cannabis from seeds.

Where to Find Cannabis Seeds

At this point, there are hundreds of different online options for sourcing cannabis seeds . If you are growing indoors, the world is your oyster, as many websites are willing to ship nationally (or even internationally). Plus, if you master the indoor environment, you can recreate perfect conditions for even the most demanding of strains.

For those growing outdoors, try to locate a local breeder who also cultivates outside. These cultivars will be adapted to your unique climate and will likely produce better results.

No idea where to start? Seed Finder is an excellent resource for sourcing specific genetics and breeders in your area. But this is just one place among many in today’s weed-friendly world.

How to Germinate Cannabis Seeds

What You’ll Need:

  • Cannabis seeds
  • Paper towel
  • Plate or tray
  • Ziplock bag
  • Heating mat (optional)

The first step to growing cannabis from seed is learning how to germinate them. Place cannabis seeds on a sheet of paper towel, laid on top of a tray. Dampen the towel with water so it’s wet but not soaking.

Fold the towel in half to cover the seeds, and enclose it inside a Ziploc bag. Place the entire tray on a heating mat, the top of a fridge or other warm area of your house. Cannabis seeds germinate between 71 to 77°F (22–25°C).

Check back every day for signs of life. If your seeds are viable, they should sprout within a week. If you are still waiting for a few to emerge after a week, toss those and begin again. If no seeds have sprouted, your seeds are no longer viable.

Ed Rosenthal recommends soaking seeds for 12 hours before germination. His formula uses water, a cannabis rooting solution and hydrogen peroxide.

This solution is a good option for commercial and large scale growers, as it reduces the risk of fungal infection and encourages rapid sprouting. Compost tea is another excellent option for a natural alternative.

Ideal Conditions for Cannabis Seeds and Seedlings

What You’ll Need:

  • Germinated Cannabis Seeds
  • Potting Mix (or Root Riot Plant Cubes )
  • Propagation Tray with Dome

Once germinated, you must carefully move these tiny seeds into the soil or soilless growing medium like Root Riot Plant Cubes. When you start cannabis from seed, the aim is a warm and relatively humid environment.

Starting Cannabis With Soil

If using soil, choose an organic potting mix suitable for seeds and starts. Water soil mixture before use, and fill potting containers that have a drainage hole. Avoid pellets that are commonly sold at garden centers, as they don’t retain moisture well, and it’s challenging for cannabis roots to break free of the netting.

Using a popsicle stick, tweezers or a toothpick, lower the germinated seed into a premade hole roughly two the three times the height of the seed. As you gently fill in the hole, be careful not to damage the sprout.

Starting Cannabis for Hydroponics

For hydroponics, you’ll want to use Rockwool cubes or Root Riot Plant Cubes. These come pre-cut into perfect starter plugs, often with a hole in the middle for the seed.

Before use, soak the cubes in water and rooting solution until they are wet but not dripping. Gently lower the germinated seed into the hole using a popsicle stick, tweezers or a toothpick. Be extremely careful not to damage the early sprout.

Whatever option you choose, keep the seedlings at a consistent temperature: 68 to 77°F (20 to 25°C). Depending on where you live, a heating mat may be necessary. Use a propagation tray with a clear dome to trap the humidity in, but open up once a day to encourage a bit of airflow.

Lighting Requirements for Cannabis Seedlings (& How to Eliminate Stretch)

Seedlings and starts require 16 hours of light a day and eight hours of dark. You can even bump this up to 24 hours a day, and the seedlings will continue to eat it up.

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What kind of grow light do you need for this early stage of development? Not the same capacity you’ll need for veg and bloom. Higher wattage types of HID lights (Metal Halide and High-Pressure Sodium) are far too powerful for sensitive seedlings.

Most growers use a simple LED grow light or a CFL fixture. Ed Rosenthal recommends 40 to 60 watts per square foot.

While these may not be entirely enough for veg and bloom, they produce enough light for seedlings without the added heat. This means you can place the lights close to the tops of the seedlings.

Place lights as close as possible to the tops of the starts, without raising the temperature over 77°F. You want seedlings to get enough light without burning them.

The goal is to avoid early stretching in your small cannabis seedlings. Healthy seedlings are short and wide, not tall and skinny. Stretching is when the sprout reaches tall for the light without putting out leaves.

Typically, under outdoor conditions, plants remain short for the first few weeks as they focus energy on building structure and root development. Stretching inside demonstrates the seedling is not getting enough light. The light source is either not intense enough or too far away.

When to Transplant Cannabis Seedlings

The primary goal for starting cannabis seeds in small pots is to encourage healthy and strong root development. Once the seedling has three to four sets of leaves, begin checking root development. This will likely be three or more weeks after germination.

Another telltale sign it’s time to transplant is when you notice roots begin to creep out from the drainage holes. If working with Rockwool, a key indicator it’s time to transplant is when the roots begin to outgrow the cube. A plant’s growth trajectory slows down if it is root-bound. If the roots have consumed the available space, it’s time to move up a size.

Cannabis Seedlings From Germination to Transplanting

Starting cannabis from seed gives growers access to a much larger genetic pool than what you can find locally from a clone supplier. Plus, if you’ve got the time to invest, it’s a much more affordable way to grow cannabis. Finally, if you are already set up with a veg and bloom room, you have everything you need to get started from seed.

How to Grow Marijuana from Seed

If you’re in a location where cannabis (another term for marijuana; short for the plant cannabis sativa) is illegal, growing it is probably illegal too. Bringing in seeds or cuttings to your location can very well be a felony, and reputable sellers won’t ship to you.

You can probably purchase and grow hemp seeds and plants, which have a negligible amount of THC, but these plants won’t produce the psychoactive effects of plants that contain higher levels of THC. Check with your seller to be certain you’re getting what you think you’re purchasing. If you buy seeds for CBD-only hemp plants by mistake, you can end up being very disappointed post-harvest.

How to acquire seeds or cuttings

You can usually find cannabis seeds for sale at most dispensaries in areas where growing cannabis for personal use is legal. You may also find growers who sell cuttings/clones. You can expect to pay $50 to $100 for a pack of ten seeds. When shopping for seeds or cuttings, read the labels and any other information the manufacturer provides on its website or in its catalog to make sure you’re getting the right seeds or cuttings (the strain) for the plants you want to grow.

One way to get your mitts on some seeds is to collect seeds when you find them in flowers you purchased, or get some from friends if they’re collecting.

  • Feminized seeds: Nearly all seeds sold by reputable companies are feminized, but make sure they are. These seeds are specially treated to grow into female plants.
  • Auto-flowering or photoperiod: Auto-flowering plants are easier, because they enter the flower stage after a certain number of weeks regardless of the light/dark cycle. If you’re a beginner, seriously consider going with auto-flowering plants.
  • Genetic background: If seeds are from a well-established strain, such as O.G. Kush, Bubble Gum, or a cross-breed, the genetic background should be stated.
  • Blend: The blend represents the percentage of the three species — sativa, indica, and ruderalis. All auto-flower strains contain some percentage of ruderalis, which is responsible for the auto-flowering nature of the plant.
  • Yield indoors: The number of grams of bud per square meter of plant when grown indoors.
  • Yield outdoors: The number of grams of bud per plant (after drying) when grown outdoors.
  • Plant height indoors: Shorter than when grown outdoors.
  • Plant height outdoors: Taller than when grown indoors.
  • Time to harvest: Approximate number of weeks after germination the flower should be ready to harvest.
  • Potency: Percentages of CBD and THC.
  • Effect: The type of experience you can expect when consuming product from the plant.
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Know the laws about buying cannabis

  • In some European countries, laws prohibit growing cannabis, but seed is legal, which is quite confusing. You’re allowed to buy and eat cannabis seeds because they’re non-psychotropic, but you can’t buy them to grow cannabis. Other countries in Europe, such as Germany, have their own seed laws.
  • In Canada, where cannabis is federally legal, seeds can be shipped across provincial lines.
  • In the U.S., in some states in which cannabis is legal, you can purchase seeds from some dispensaries or other locations to grow plants as long as you keep them in the state. Other states may bar selling to non-licensed growers. Shipping or transporting seeds across state or international borders is illegal, although a few reputable online seed stores ship to individuals with success.

Cuttings are typically treated in a similar manner as seeds in legalized locations. They may be available from some dispensaries or outlets for pick up or delivery with a fee. They’re prohibited from crossing U.S. state lines or international borders. You can buy individual plants and mix and match strains. Prices vary and are often determined by plant size.

Buy cuttings (clones) only from a reputable source who understands proper back-crossing of strains for stability. Back-crossing involves pollinating a plant with one of its parent plants to promote sexual stability, so that when you have a female it won’t hermaphrodite into a male during flowering.

Both seeds and clones are often able to be purchased from commercial locations already in your state.

In the U.S., transporting any part of the cannabis plant over state lines is illegal. This applies to seeds and clones and, technically, even to tissue samples.

How to germinate cannabis seeds

Germinating seeds requires a dark environment that is around 70 degrees. There are many ways to germinate seeds (in soil, in a wet paper towel, in starter plugs) You can also sow them directly into soil in a garden or container, as long as the soil is light and fluffy, so the roots can easily grow down and the stalk can break through the soil. Plant the seeds about 1/4- to 1/2-inch deep and cover them loosely with soil.

Most importantly, seeds need a moist environment; they won’t germinate if they get too dry. You can use a heat mat to increase the success of germination in colder climates.

How to transplant marijuana plants

When transplanting any plant, whether it started from seed or a clone, handle it gently, being very careful not to damage the roots. Center the plant in the pot, and plant it deep enough to cover the root ball completely in soil. If the plant is root bound, you can gently tease the roots apart to encourage outward growth.

Pack your soil or other grow medium down around the roots well enough to support the plant while new roots grow, but not so tight that the soil restricts outward root growth. Water the soil around the roots.

About This Article

This article is from the book:

About the book authors:

Kim Ronkin Casey has been a communications professional for more than 20 years and recently took a year-long leap into the world of cannabis as the communications manager for one of the leading dispensaries in North America. She now consults for companies in the industry on internal and external communications. Joe Kraynak is a professional writer who has contributed to numerous For Dummies books.

Spotlight: The 3 Best Ways to Germinate Cannabis Seeds

Does cultivating cannabis seeds interest you? Do you want help with it? This piece will discuss the best ways you can opt for when germinating your cannabis seeds.

Courtesy Photo / Samuel Mind

Have you recently decided to germinate your own cannabis seeds? It is a very exciting and rewarding process, only if you know the right way to do it. For that, we have come with a complete guide that will help you germinate cannabis seeds in the best way possible.

What exactly is Germination?

Germination is the very first stage of any plant growth. It is when the seed “realizes” that it is in a fertile environment and can start breaking out of its shell. A seedling will break through the shell, resulting in the growth of roots. The fertile environment helps the plant grow and feed off the light, water and nutrients in the environment. In the cannabis world, germination is a very important process. It is very important for the seed to pop out properly. There are different things that cultivators do to ensure that the seed germinates successfully.

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How to Germinate Cannabis Seeds

There are different methods that cultivators use to germinate their cannabis seeds. Some use the old school method and germinate their seeds in the soil, while there are some people who germinate them in water. Lastly, you can also find people who germinate their seeds in paper towels. The way of cultivation depends on the cultivator. Let us take a closer look at each of these methods.

Germination of Cannabis Seeds in Soil

Soil is the most natural method to germinate your cannabis seeds. The soil is the perfect environment for the germination of cannabis seeds as the soils protects the weak roots from being damaged. However, there are things that you must take care of. For instance, it is very important to use the right type of soil.

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You can go for potting soil that is only lightly fertilized or you can also go for a seed starter that has a pH level 6 or slightly more acidic. The acidity in the soil is the optimal environment for the growth of the seed. Be careful, excess of everything is bad, and “hot soils” that are very rich in nutrients aren’t suitable for germination and seedlings – leave this type of medium for mature plants.

Germination of Cannabis Seeds in Water

If you want your plant to grow faster, germinating your seeds in water will probably be the best way forward. However, even though it is faster, there are things that you need to be careful with. You will have to make sure that the environment is of the optimal condition. Usually, to germinate, cannabis seeds need only a total of 24 to 48 hours. However, cultivators can keep their seeds soaked for a week. This method is faster than the soil method as it provides more moisture. Moisture is a key component in growing the seeds. The hard shell cannot withstand the moisture and it will become easier for the root to break through.

Germination of Cannabis Seeds in Paper Towels

Paper towels are a fairly new way for cultivators to germinate their seeds. Cultivators use damp paper towels or cotton pads to give the seed the moisture it needs. The seeds are placed in between two dampened paper towels and then enclosed between two plates. This helps keep the moisture in seeds need to be stored inside, under room temperature.

The germination process in this method takes up to 5 days to happen. The seeds will start sprouting in the paper towels and once the roots grow up to 5 millimeters in length, you can plant them. However, you must be very careful when planting them. They can easily break, as the roots are very fragile. It is possible for the roots to be tangled in the paper towels and break off. This is why it is best if you are extra gentle when handling them – the best way is to use a pair of sterile tweezers.

Final Thoughts

These are three ways you can germinate your cannabis seeds. The question remains as to which of these ways is the best. That depends solely on the cultivator. They need to decide what method works best for them and is the easiest to carry out. As our experience shows, more and more growers tend to use paper towel method, as it is simple, keeps the seed away from light, and usually results in quick germination. Also remember, that it is best to germinate the seeds and keep the young seedlings indoors as you can control the environment.

If you want to buy the highest quality of seeds, you can always do it at Herbies Seeds. They have some of the best seeds across the world with the guarantee of germination. The seeds they offer are authentic and high quality. If you want to give cannabis cultivation a go, it is best to get the seeds from a reputable place.

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