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How to plant cannabis seeds in coco

How To Germinate Cannabis Seeds

Growing your own weed is fairly easy, as explained in our article ‘All You Need For Growing Weed At Home‘. The hardest part for some growers though, is germinating their newly bought cannabis seeds. After all, the vulnerable seedlings are easily damaged. However, making sure your cannabis seeds survive germination is essential for a successful grow. In this blog, we highlight three tested methods that let anyone germinate cannabis seeds with minimal effort.

How To Germinate Cannabis Seeds, Step 1: Get Good Genetics

We cannot stress this enough. If you want good results, you are going to need good materials to start with. In case of growing cannabis, the first thing on that list are good cannabis seeds, of course. Besides high quality cannabis seeds all you need is some water, a warm environment (between 20-25 degrees Celsius) and – lack of – light to start germinating your future cannabis plants.

Even though living weed plants love (and need) a lot of light, germinating cannabis seeds thrive better in a dark environment. And just like there are different methods of growing your own cannabis, there’s also a choice in how to make your seeds sprout.

Want good cannabis? Get good seeds!

Germination is actually a process where you activate a dry seed that is in a ‘sleeping state’. By adding water to the seed, a small root that is inside the seed-shell will want to come out in search for more water. This will make it develop into a big taproot that’ll serve as an anchor for the plant and from which more roots will sprout. Read more about root-development in this article: ‘Clones vs. Seeds: What Grows The Best Cannabis?‘

Germinate Cannabis Seeds In Water

The easiest way to germinate your cannabis seeds is to let them soak in a glass of water. The seed will absorb the water and due this process hormones will make the seed start to grow: expansion and elongation of seed embryo.
You will see them sprout after 24 to max. 48 hours. Note that you need to store the glass of water in a dark place on roomtemperature. After sprouting they are ready to plant in soil, 1cm to max 2cm deep. All they now need is love, light, water and heat!

Ready to sprout!

How To Germinate Cannabis Seeds: Wet (Paper) Towel Germination

The best known way of germinating cannabis seeds is to put them on or between wet paper towels or cotton wool. This method exists in different varieties, as it’s not so much about the paper itself, but more about the absorbency of the material. It’s very easy to make sure the ‘medium’ doesn’t get too soggy and doesn’t dry out easily. If it does dry, you can effortlessly add a few drops of water to immediately re-moisten it.

Wet paper towels are probably the most common way of germinating cannabis seeds

The goal here is to balance out the moisture so it’s not too dry, nor to wet. Go for a piece of paper that is moist all over, but doesn’t drip when you pick it up. If the seeds stay to dry, the root that’s supposed to sprout won’t be able to make it out of its shell in search for water. If the paper is too wet though, the root will come out and quickly stop looking for water; as it’s already soaked in it. This stops the development of the root, delays the growth and might even cause the seeds to rot after a while. So, be careful not to give too much water as this is one of the most common rookie mistakes when it comes to growing weed!

Transplanting In Soil

After the root has sprouted and has gained a few millimetres in length, it’s time to transplant the seedling into its soil and put it under a light-source. As a rule, a small 1cm deep hole made with your fingertip should do. Gently pick up the seeds one by one, taking care not to touch the root. Use a clean pair of tweezers and don’t squeeze. Make sure that the roots don’t cling to the paper or cotton wool. Lovingly cover the seed with a little (loose) soil and add a few drops of water. Now, all you can do is wait whole the story continues below the surface. As soon as the seedling pops her head above the ground and green leaves emerge, she’ll needf light to continue growing.

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This is the part where most growers (especially the hasty ones) sometimes lose a seed. Remember that you are handling a baby plant here. The vulnerable root is easily damaged during the transplant. If you don’t trust your steady hands, it might be better to choose another germinating method.

How To Germinate Cannabis Seeds In Soil

Another common method of germinating cannabis seeds, and probably the most natural one, is to stick the seeds directly in their intended medium: the soil. You can do this with or without soaking it in root stimulator for a few hours first.

By planting cannabis seeds directly in their soil or coco – or whatever other medium you might be using – growers cause the minimal amount of stress for the plant. Direct planting also allows the taproot to immediately dive as deep into the ground as possible. Furthermore, its leaves can enjoy the light as soon as they emerge from the developing seed. This way the seedling can start its growth with a fair chance, providing you with a steady, high-yielding cannabis plant.

Cannabis seeds and sprouted seedlings require constant temperatures of around 20-25 degrees Celsius

For this method, simply prepare your medium by moisturizing it, again, without soaking the soil completely. Then take your flower pots and use your finger to make a small hole about 10-15mm deep in the top layer to put the seed in. Cover the seed up loosely and top it off with a little water. Be careful not to give too much at once though! A stream of water can cause the seed to travel further down the pot where it’s too moist – and too deep to travel back up again.

The top layer is the perfect place to germinate cannabis seeds, as it dries out faster than the soil further down the pot. This makes it easier to ensure the right level of moisture for the seed to germinate. If it gets too wet, the seeds will rot in the soil. If it stays too dry, the plant will not be triggered to emerge from its shell. Again, it’s all about finding the perfect balance between too wet and too dry.

How To Germinate Cannabis Seeds in Plugs

Last but not least on this list is the germination of cannabis seeds in special plugs. These plugs are available in various materials, especially designed for quick and efficient germination of cannabis seeds.

Plugs are a practical way to germinate cannabis seeds

Most plugs are dry blocks of (usually) coco fibre. Peat plugs are an interesting alternative, as these contain some initial nutrients to help the seedling along. After fully absorbing about 500ml of moisture, or 250ml of a root booster and another 250ml water, they slowly turn into a moist, soil-like plug. Grow plugs usually have a premade hole in which to place the seed. After sticking the seed in the top of the plug, cover it lightly with a little leftover plug fibre. It takes a few days at maximum before you see the first heads pop. As soon as the roots grow out of the bottom or the side of the plug, you can stick the entire plug, complete with its seedling, into your intended medium. These plugs make germination and the initial transplant a piece of cake.

A fantastic view on this seedling with it’s shell sticked to her leaves

After Germination: Growing Your Seedlings

So there you have it: whichever method you chose, germination should now be underway. Remember that even the best seed banks work with organic, natural materials, so 100% germination rates can never be guaranteed. If you get your technique right, though, most or all of your seeds should germinate according to plan. Once your seeds have become seedlings, the next steps of your grow await. There’s a lot of choices to make from here to harvest time: indoor or outdoor, which spot to pick, what nutrients to use, and so on. Keep an eye on our expanding grow blog collection if you want to learn more!

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The germination of cannabis seeds is illegal in most countries. Amsterdam Genetics cannabis seeds are exclusively sold as collectable souvenirs to customers living in countries where the cultivation of cannabis is illegal. All information on this website is intended for educational purposes only and is not meant to incentivize people to engage in illegal activities.

How to grow cannabis in coco coir?

Coco coir is a versatile growth medium that makes an excellent option for all growers. Coco coir comes in loose and compressed brick form comfortable for transport-store-use. Coir ensures superior water retention, aeration while being economical, user-friendly.

Coco coir is an essential grow medium and soil amendment that helps cannabis to grow to their fullest potential. Researches say that coir-based substrates are effective for cannabis during the vegetative and flowering stages of production.

It can be handled manually or automated hydroponic systems with real time sensors and regular monitoring. It is also resistant to fungal-bacteria-molds, provides sturdy substrate for all kinds of cannabis like indica, sativa, hybrid and ruderalis.

Coco coir are commercially available as bagged loose coco coir and compresses blocks and also ready-to-use cultivation blocks .

The typical coco coir available on the market are pre-washed, buffered, hydrated and ready to use right out of the bag.

Coco coir are only usable when they are completely hydrated. It is preferential for a grower to place coir blocks within the larger containers such as air pots, plastic pots and fabric bags .

Fabric pots are ideal to start with cloners and new seedlings, it comes in different sizes of 1, 2, 3, 5 and 10 gallons. A 5 gallon fabric pot is best suited for a 5kg compressed coco block.

Complete Guide for Cannabis Grow

Preparing Grow Substrate

Even the coir is pre-buffered, light buffering is needed at the grower’s end. Coir has a natural high concentration of sodium and potassium, so it needs to be treated by soaking in Ca-Mg solution to leach out the excess salt content.

Higher concentration of potassium leads to calcium deficiency in grow medium used for marijuana plants.

Hydrate the compressed block with distilled water to note down the precise nutrient addition and balanced pH and EC. Once the brick is fluffed, completely damp prepare for the decent grow mix for cannabis.

Marijuana requires highest aeration compared to other weeds. Mixing grow supplements like perlite and vermiculture improves water intake and encourages strong root growth.

The most recommended coco-perlite mix of 70-30 , i.e, 70% of coco and 30% perlite at top layer. For a new cloner, the perlite mix of 50-50 helps the root to grow deeper, quicker providing easy water accessibility.

Cannabis potting mix needs 2-3 inch layers of clay pebble at the bottom to aid oxygenation and better drainage.

And flush the mix by pouring pure water with a pH of 6.5 until the run off is less than EC 100 (0.1). The flushing is essential to drain away residual EC from buffering that could burn sensitive cannabis.

Plant Nutrient Mix

Coco goes well with every kind nutrient supplement. Cannabis grows in a hydroponic system with coir as the medium demands some essential grow supplements like Cal-Mag and other plant grow nutrients .

No matter what nutrient schedule you use, make sure not to include nutrient at every watering. Otherwise you will burn your plant with excess nutrient buildup.

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While using nutrient solution, test for pH of the solution, use wisely with the prescription provided at the back end of the nutrient pack.

Furnish other fertilizers and grow amendments to enrich the nutrient availability.

Caring for Cannabis

Stage- 1- Germinate (1-5 th days)

Cannabis can be grown commonly on general germination trays or the individual rooters and make sure to keep the bottom of the tray/rooter moist with a shallow pool of water.

At the early stages of growth, the relative humidity should be kept high (65-80%), pH 6.2 to 6.4 and room temperature should be maintained at 72-79F (22-26C) and measured for perfect Nutrient Element Ratio (NER).

Have the grow light turned-off (dark) during germination to protect the young roots from light heat and later after a day or two switch it with 18/6 lighting hours (16 hrs light-8 hrs dark).

Stage- 2- Seedling (6-12 th day)

Vegetative phase

In this stage where cotyledons sprout out, turn-on the CFL light to 24 hours (full day) and room temperature of 70-85 o F (20-30 o C), humidity 40-60%.

In this stage, the pH of water inflow should be between 5.6 to 6.5 inorder to improve calcium solubility.

The seedling in the coco/perlite substrate should be watered once or twice per day until 20% runoff from bottom. Coco must not be let to dry and be frequently wetted.

Lighting power of 15-25W of Fluorescent or LED (23 W of CFL) is required for the stage of true leaves to occur and the intensity of the light should be maintained properly by adjusting the height between lighting and seedling.

Place a thermometer or hygrometer to check for simultaneous change in temperature and air moisture.

In the first few of true leaves appear, start fertigation inflow with EC around 350-400 and strengthen the dose of Cal/Mag to its full potential and other nutrient schedules for better growth of cannabis.

Increase the EC of the solution by parts of 80-100 every time. At the end of seedling the nutrient solution must be of its full strength around 1000EC.

After the plant has 3 nodes, transplant to a bigger container.

Stage- 3- Transplant

Continue to water your plant till 10-30% runoff and maintain the water pH at 5.6 to 6.5. About 2 weeks later transplant your cannabis into a bigger new pot preferably, fabric pot . Let the EC of the new pot mix be lower than seedling substrate to avoid transplant shock.

Once the cannabis reaches half of its final desired size, start plant training.

Look for any color changes in the leaves, if the first few leaves have turned yellow then it means Nitrogen deficiency (sigh of reduced chlorophyll production), so make appropriate arrangements for proper nutrient management and do not go low or higher than optimal.

Flowering phase

Considered as a regularly growing plant, cannabis are provided with 12-12 lighting duration (12 hrs light, 12 hrs darkness).

Keep close monitoring of the plant in this flowering phase as the chances of nutrient deficiency like lacking in Phosphorus that shows small, dark green leaves with purple veins and lack of Potassium turns leaves yellow, brown then die.

And importantly control the room temperature from 65-80 o F (18-26 o C) and humidity ranging 40-50%.

If possible tease(train) your plant by gently bending and stretching, but avoid training once the buds are formed.

Stage- 4- Harvest

Harvesting at the right time means a lot. Harvesting early, loses its potency; later will produce a sleep dosage.

Choose for the precise moment of harvest by observing through glittering trichomes under Magnifier.

Trichomes start head out clear and glassy- buds are not potent.

Trichomes heads turn milky white as it matures, these trichomes are full of potent with the highest level of THC and CBD that are used in Recreation- mental/psychoactive effect.

With some more time felt (after a week), white trichome head turns amber/golden that has less THC used for Relaxing- anti-anxiety effect.