Germinating Old Weed Seeds

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We show you in this post how to properly germinate your marijuana seeds. You only have to follow these 8 steps and have a little patience to save time It's hard to germinate old cannabis seeds, but with the right type of method your chances increase ten fold. Check out the Top 4 ways to get those seeds to Crack.

How to germinate marijuana seeds

Alchimia Grow Shop is always trying to offer a wide and comprehensive seed catalogue , keeping our seed stock in the best storing conditions and thus achieving the best germination ratios of cannabis seeds.For this reason, we constantly renew our stock and never let our seeds to spend more than 6 months in our cooling chambers, so we can guarantee that the seeds you are buying have a maximum storage period of 6 months. Of course, we have a controlled enviroment inside our cooling chambers.However, from time to time, some germination problems may occur. We invite you to tell us any problem that you have, so we can start our scheduled germination tests for this cases and proceed to make a claim to the involved seedbank.

How to germinate marijuana seeds

To ensure that the problem comes from the seed and not from our germination system, we recommend to follow these steps to correctly germinate your seedlings:1.- Take a dish or any flat container and some paper napkins.

Paper napkins and water

2.- Place your seeds between two paper napkins.

Place the seeds between two napkins

3.- Wet the napkins and keep them humid for the next 3/4 days. You can use a mixture of 100ml of tap water with 1ml of hydrogen peroxide.

Moisten both napkins

4.- After 3-4 days, you can see that your seeds have sprouted. If they haven’t, replace the napkins for new ones, also humid.

5.- Soak some jiffys (peat pellets) in tap water to hydrate them. This process takes a few minutes. You can add some root stimulator to the water (follow manufacturer’s instructions).

Soak your jiffys in water to hydrate them

6.- Once your peat pellets are hydrated, make a small hole on each of them and gently place the germinated seeds in the holes, always with the small root downwards (see picture). Cover the seeds with a thin layer of substrate (about 5mm).

Put one seed in each jiffy

7.- With a little bit of patience, after 3-4 days we will se the first plants sprouting.

Young plants sprouting after a few days

8.- After a few days, your seedlings will be ready for planting, either in pots/containers or in-ground.Notice that you can improve your germination ratios by using gibberellic acid – mostly used for germinating old seeds – auxins and cytokinins or several products like B.A.C. X-seeds , which will improve the germination capacity of your seeds while keeping fungus and other unwanted infections away.If you keep your seeds warm while germinating them, the process will be faster, but remember that the napkins will also dry faster, so you will have to carefully check their humidity level to keep you seeds always humid, but not soaked.

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It is better to germinate your seeds keeping them in a warm, ventilated and dark place. Many people use small propagators for a better controlled enviroment, improving their germination results.The periods mentioned in this post are merely orientative; some seeds may germinate in 48 hours, while others may take 10 days or more. Be patient and renew your wet napkins every 3-4 days.

The articles published by Alchimiaweb, S.L. are reserved for adult clients only. We would like to remind our customers that cannabis seeds are not listed in the European Community catalogue. They are products intended for genetic conservation and collecting, in no case for cultivation. In some countries it is strictly forbidden to germinate cannabis seeds, other than those authorised by the European Union. We recommend our customers not to infringe the law in any way, we are not responsible for their use.

4 Top Ways How to Germinate Old Cannabis Seeds so they Crack Open

You may have found some old cannabis seeds that you forgot about.

Or maybe haven’t gotten around to planting them and are wondering how to get them to germinate.

The older they are, it’s hard for them to crack their shell.

I have tried various ways to get older seeds to sprout, some successful some not.

There are methods that work better than others.

These are the methods we found to help germinate old cannabis seeds and get them to sprout.

Let’s check them out,

How to germinate old cannabis seeds:

Pre-soak method

The pre-soak method is one way to kick start and germinate old cannabis seeds into sprouting.

We usually start all of our seeds off this way even if they are newer seeds.

It’s recommend you have your water solution at room temperature around 20 degrees Celsius or 68 degrees Fahrenheit.

You can have it warmer depending on the climate you live in. But not too hot.

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** Please note: Do not soak your seeds longer than 20 hours or you risk drowning them **

There are a few different additives you can use hydrogen peroxide, carbonated water.

We have also heard of fulvic acid but (it is not covered in post because we never used it.)

Hydrogen Peroxide:

When using Hydrogen Peroxide in soaking your seeds it adds extra oxygen to the water.

This can help the cannabis seeds absorb the extra oxygen for the tap root. Roots like oxygen.

To make this solution use a ratio of 100:1. Use 100 ml of water to 1 ml of hydrogen peroxide.

Next take purified water at room temperature and mix in your hydrogen peroxide.

Then place water solution in a shot glass or glass of your choice then drop the seed in.

Put the glass in a dark warm area.

Wait anywhere from 8-18 hours, tap the seed to see if it sinks. If it does then it has absorbed the water it needs.

You can now either plant it in the medium, pointy side facing down.

Or you can place then in a paper towel soaked container with your hydrogen peroxide solution and use the paper towel method to sprout them.

Carbonated water:

To use carbonated water to germinate old cannabis seeds it’s really simple.

Use room temperature carbonated water (un-flavored).

We recommend you have your water solution at room temperature around 20 degrees Celsius or 68 degrees Fahrenheit.

You can have it warmer depending on the climate you live in.

Simply drop your old cannabis seed into the water and store in a dark warm area for about

Put the glass in a dark warm area.

Wait anywhere from 8-18 hours, tap the seed to see if it sinks. If it does then it has absorbed the water it needs.

You can now either plant it in the medium, pointy side facing down.

Or you can place then in a paper towel soaked container with your hydrogen peroxide solution and use the paper towel method to sprout them.

Scratch Method:

With the scratch method it’s really simple to do all you need is a fine grit sand paper.

Some people use an empty match box to put the sand paper in.

Then the next step is to simply put the seed in a “matchbox with sand paper” and give it a shake once or twice is enough.

What I have found best if you don’t have an empty match box and do not want to take all the matches out of the box.

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Cut a piece of sand paper about 3 inches by 3 inches.

Next roll it up so it’s the shape of a tube and wider than the seeds, then put some tape on it to keep it together.

Then just put your finger on one side of the opening to close it.

After that place the seed in the tube of sand paper put your other finger on top and give it a shake once or twice is all that is needed.

Once your old cannabis seeds got there shake on.

The next step is to put them either in a Pre-soak, paper towel method, or grow medium of your choice soil coco, rockwool.

Slice Method:

The slice method is the last resort and a very extreme measure to try and get the seed to germinate and sprout.

After you have tried the methods mentioned above.

You will need a very sharp knife like a razor blade (make sure it is sterile, use some alcohol on it)

Take your old seed and make a slice along the middle of the seed where you can see the division of both sides of the seed.

Now place the seed into the soil, coco, rooting plug or Rockwool of your choice.

Ridge Method:

Some cannabis seeds have a ridge on one side of the seed that is protruding.

You can try and gently remove the ridge with a razor blade if you wish this may allow the seed to sprout open.

Then place the seed into a growing medium or a sprouting method like paper towel or rooting plug.

Final Thoughts

Trying to germinate old cannabis seeds can be very difficult.

Especially if they are not wanting to crack open. About 50 to seventy 75 percent of the time this can be the case.

Try to use some of the methods mentioned like the scratch, pre-soak, and paper towel method.

You could be on the right track to getting them to sprout out.

When you have old seeds you should always try and germinate them.

Because you never know they just might grow up to be a fantastic cannabis plant.

If you want to learn more about germinating cannabis seeds check out our post on it here: Germinating marijuana seeds

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