It is always better to germinate your weed from seeds because they may be the most convenient way for you to start your indoor cannabis garden.
You may not have access to clones, but cannabis seeds are usually more readily available from reputable seed banks across the world.
Not to mention that seeds are the result of sexual reproduction, and are a random combination of characteristics of the two parents.
No two plants from seeds will be the same because there are so many possibilities. But there is no combination when dealing with cuttings.
Each seed is a genetic blueprint of an individual plant. Most marijuana strains varieties exhibit quite a bit of variation, but they most importantly allow for genetic progression.
In this detailed guide on how to germinate weed seeds, you will learn the ground rules and techniques of germinating from seed with a 95% success rate.
- Part One: Seed Selection
- Part Two: Complete Your Weed Grow List
- Part Three: Germinate Your Seeds
- Part Four: Common Cannabis Seed Starting Mistakes to Avoid
Part One: Seed Selection
The choice of seed you make determines what you get at the end of the growth cycle. The large seed selection may be confusing, especially for new growers.
Choose the Most Appropriate Seed Type
There are hundreds of different varieties of seeds and each has its own specific properties. With the experience you will gain as you grow weed, you will choose the ones you like the most.
It is unreasonable to simply content yourself with only one variety when you can grow three or four plants in one year.
When buying seeds, our recommendation is to look for as much info on the various seed types as possible beforehand.
There are three main seed types: feminized, regular and auto-flowering. Each seed type has its own intrinsic worth and shortcomings.
Depending on what you are looking for and the conditions of your grow space, you will have to choose one or the other.
If you are an experienced grower, you may want a variety of male and female marijuana plants. However, the problem lies in uncontrolled fertilization, which isn’t a good thing for beginners.
Non-fertilized weed plants tend to produce more potent and bigger buds. Feminized females will provide you with materials for next season’s crop. But the buds will be smaller.
Be aware, especially if you are a closet grower that feminized seeds generate only female plants.
If you plant marijuana crops of all females with no males around to pollinate them, they will produce few or no seeds unless you can plant a few non-feminized seeds.
What Strain Should You Grow?
When searching for the most ideal strain to grow, consider the following factors:
- Flowering period
- Yielding rate
- Flower size
This is so since weed plants tend to have unique color, structure, shape, and size. Not to mention that some strains may produce colorful flowers while others produce denser buds.
Here are some of our recommendations of weed strains to germinate from seed:
Granddaddy Purple is an indica dominant that produces a flavorful and colorful weed plant. The seed sex can either be feminized or regular.
The flowering period for this strain is around seven to eight weeks. The indoor yield is 300 to 450 g/m2, and the outdoor yield is 400 plus g/m2.
Purple Afghan Kush
This is an indica dominant seed with a high level of THC. This is a feminized strain that has a 60-day flowering period.
You should expect an outdoor yield of about 600 to 800 g/m2 and an indoor yield of around 500 g/m2.
This is a dominant Indica strain that produces dark green weed plants. This strain doesn’t smell like the usual weed plants.
It has a flowering period of 49 to 55 days, which is a good duration for medicinal weed growers. The indoor yield is around 780 g/m2 and the outdoor yield is around 610 g/m2.
This is an auto flowering sativa/indica/ruderalis variety that you can cultivate indoors or outdoors. It has significantly high productivity.
The autoflowering female weed plants require around 56 days to yield. The indoor yield is around 450 to 650 g/m2 and the outdoor yield is about 50 to 350 g/m2.
Haze berry displays all of the stereotypical properties of the haze dominant Sativa. This strain grows rapidly into jumbo plants, shooting out healthy branches and many bud sites.
Haze Berry has a flowering period of 9 to 11 eleven weeks. It has an indoor yield of 525 to 575 g/m2 and an outdoor yield of 600 to 650 g/m2.
This is one of the finest sativa dominant weed strains for beginner and expert growers. It is an iconic figure that demonstrates power.
This strain has a flowering time of 8 to 9 weeks. The indoor yield is 400 to 450 g/m2 and the outdoor yield is 650 to 700 g/m2.
Part Two: Complete Your Weed Grow List
There are several things you will need to successfully see your cannabis seeds through all the growth stages, including germination:
- Rockwool cubes
- Paper towels
- Seed starter plugs
- Grow space
- Indoor lighting
- Spray bottles
- Watering cans
- pH meter
- Rotating and/or oscillating fan
- Ducting and/or inline fan
- Duct tape
- Ball of string
- Protective eyewear
Part Three: Germinate Your Seeds
Once you have completed your cannabis grow a list, you are ready to germinate your weed seeds. There’s more than one method for germinating weed seeds.
1. Paper Towel Method
For this method, you will need paper towels, a spray bottle, ceramic dish/plate, tap water, and a heat lamp or a reliable light source for keeping the seeds optimally warm. Here are the steps to follow:
Soak the weed seeds
Soaking your cannabis seeds in tap water for about twelve hours makes germination much easier. Quality seeds are supposed to sink in the water.
Place the seeds on the paper towel
After around twelve hours, retrieve the seeds from the water and place them on the paper towel.
Make sure the paper towels are wet and placed on a supportive surface, such as a plate or a ceramic dish.
Ensure the seeds are evenly distributed on the damp paper towel. Preferably, they should be half an inch from each other.
Cover the seeds with a second paper towel
Ensure the second paper towel is wet and is in direct contact with the seeds. This will help to keep the seeds moist.
Keep the weed seeds warm
Preferably, the environment around the seeds should be roughly 70 to 85 degrees Fahrenheit. You can use a heat lamp to maintain optimum temperatures.
Avoid touching the seeds until they germinate. Just be patient, the seeds should sprout within a few days. Make sure the seeds are not exposed to direct sun rays.
Make sure the paper towels are moist
Use your spray bottle to keep the towels moist. It is advisable to routinely check the paper towels to make sure they don’t dry out.
Wait for the to sprout
Viable weed seeds should take at least forty-eight hours to sprout. The seeds will be ready for planting when the taproots are a quarter to half inch long.
Please avoid touching, pulling or prodding the seeds. This can easily damage the tender roots. Also, discard any seeds that take longer than usual to sprout.
2. Rockwool Method
Rockwool is inert mineral wool that is every effective for germinating weed seeds. It is one of the most popular methods among indoor marijuana growers.
This technique allows for a quicker seeding procedure. It is quite convenient because it allows you to avoid any sanitation issues.
The rockwool method reduces the number of times you need to handle your cannabis seeds. It allows for sprouting and transplanting with minimum risks of damaging the seeds.
Here are the steps to follow:
Soak the rockwool cubes
Carefully soak the cubes in ambient room temperature water for about twelve hours, and then place the cubes in a tray.
Place the seeds in the cubes
Gently place the seeds into the cubes at a depth of around 6.35 to12.7 mm. Cover with moist rockwool.
Seal and properly store the tray
Cover the tray and place it in a warm environment. Sprouting usually takes place within 72 hours. Water may not be necessary until after germination.
Don’t squeeze the rockwool cubes
If excess water forms on the cubes, we strongly advise you not to squeeze the rockwool. This may cause the seeds to rot. Instead, you should gently shake off the excess water.
3. Soil Method
Germinating marijuana seeds in soil is remarkably easy and straightforward. This is one of the most successful sprouting methods.
Soil offers a more natural way for weed seed germination with minimum interference. Less contact with the seeds ensure that the fragile roots are not damaged.
Here are the steps to follow:
Choose the ideal potting soil
A fresh potting soil out of the bag often fulfills all the requirements for germinating your marijuana seeds.
The soil should have a good texture that allows good root development and penetration, water retention, a stable pH, good drainage and a minimum supply of nutrients.
Don’t add nutrients
No need for adding nutrients because good quality potting soil is often fortified with organic nutrients, including readily available worm castings and bat guano.
Most quality soils supply sprouting cannabis seeds with sufficient food for the first two to four weeks of growth.
Find the right container
You can germinate your weed seeds in any given container type, but you have to choose the best container for perfect results.
You can use paper cups, milk cartons, or yogurt cups. However, the most convenient starter containers are trays. They are simple to water.
Prepare the soil
Moist the potting soil, but don’t overwater. Then fill your containers with the potting soil and ensure there are no gaps.
Create small holes in the soil and make sure the holes are approximately 0.6 inches deep.
Plant the seeds
Place one weed seed into each hole you prepared and carefully cover them. Leave the seeds alone to germinate.
Provide the needed care
Place the containers under an indoor grow light and make sure the temperature within is roughly 72 degrees Fahrenheit.
Make sure the soil stays moist. You should be able to see your marijuana seeds sprouting in as little as four days.
4. Water Method
This may not be the most popular method among weed growers, but it works and it has a success rate of about 90 percent.
The only problem is that you may damage the sprouting seeds if you leave them in the water for extended durations.
Here are the steps to follow:
Fill a clean glass with purified water
Let the water settle for a few hours until it attains ambient room temperature. The water temperature should be roughly 65 degrees Fahrenheit.
Place the seeds
You should add a maximum of three seeds in a single glass of water. Don’t add any nutrients into the water.
Instead, you should change the water every few days and make sure you maintain the ideal temperature optimum germination.
The seeds should start sprouting after a couple of days or so. They should be ready for planting when the roots are about three to five mm long.
Part Four: Common Cannabis Seed Starting Mistakes to Avoid
Planting too deep
There is a simple rule of thumb when planting weed seeds. Measure the widest point of your cannabis seeds and multiply that measurement by three.
If your seeds are one millimeter wide, then it is wise to plant them three millimeters deep. Do not worry about being too shallow or slightly too deep.
However, seeds planted too deep will most likely not germinate.
Planting in too cold/hot grow medium
Marijuana seeds need a specific temperature range for effective germination. The most ideal temperature range is 65 to 85 degrees Fahrenheit.
Therefore, you should avoid growing media that are too cold or too hot.
Planting old or outdated seeds
Expired seeds will probably not germinate. Therefore, you should check the expiration dates on the seed packages.