Cannabis Seed Cracker Tool

Seedcracker – the practical germination helper – this is how you germinate every seed Cannapot's Seedcracker is an innovative tool that can be used to germinate If you find yourself with an old pack of cannabis seeds, is it too late to give them a grow? Not necessarily! Here's how to germinate those old cannabis seeds. I had some seeds that I was trying to germinate but nothing happened for like 4 days. These seeds have been in a moist paper towel in my closet for 4 days…

Cannabis Seed Cracker Tool

At the Cannapot Hempshop you can order a lot of different types of cannabisseeds from worlds finest breeders. You can find feminized seeds, regular cannabisseeds, automatic seeds and we also offer a nice selection of fine medical CBD seeds with a lot of cannabidiol. We have the finest seedbanks from all over the world, we list over 165 different seedbanks with incredible good genetics. You can buy marijuana seeds legal without creating an account – if you have an account you only need to do it once, all data is saved temporarily and the specifications of your account are secured by SSL – it is highly encrypted. If you need more genetics you can have a look at myCannapot myCannapot is our special auctionsystem where you can find real rare seeds, some bargains and a lot of very interesting cannabisstrains. All the weedseeds come directly from the breeder so have a look and maybe you are lucky to get some real nice stuff.

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All costs, the shipping and handling, as well as the costs of the moneytransaction and the customs duty, pay our customers.

All goods will be delivered with the Austrian Post – if the amount is higher than EUR 100,– we will send the order always insured. If the amount is under EUR 100,– we send it regular but you have an option at the orderprocess where you can choose an insured delivery – this service costs EUR 3,10 extra. If you wish a Stealth-Delivery you can also choose this during the orderprocess – for this service we charge you EUR 10,– extra. Stealth-Delivery means that we repack your seeds from the original breederspacks into other very discreet packages.
Orders of EUR 150,– (€) or more we do not charge any shipping or handling fees. For return delivery and rejected delivery we have to charge you 10 % of the total amount!

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How to germinate old cannabis seeds

Although prime cannabis seeds are typically younger, old weed seeds may still be viable! However, you have to go about germinating them differently, as time tends to harden these magic beans. Learn how to germinate your old cannabis seeds to achieve a bumper harvest.


  1. Moisture Is Key To Cannabis Seed Germination
  2. Best Methods for Germinating Old Seeds
    1. Place Old Weed Seeds in a Glass of Water
    2. Use the Scarification Method
    3. Crack Your Weed Seeds
    4. Remove the Ridge
    5. Surgically Open the Seed
    1. Avoid Putting Old Cannabis Seeds Straight Into the Medium

    If stored properly, marijuana seeds can remain viable for many years. However, the longer you keep them, the harder it is to make them sprout. More often than not, you’ll have to use different hacks to successfully germinate old cannabis seeds. We’ll teach you how, but first, let’s see what conditions make cannabis seeds come alive in the first place.

    Moisture Is Key To Cannabis Seed Germination

    If you want to successfully germinate cannabis seeds—whether fresh or old—you must satisfy the following conditions: warmth, darkness, and moisture. The first two are important, but it’s moisture that causes the dormant embryo inside to begin its life cycle.

    That’s why it’s so important to store cannabis seeds in a dry place—so they don’t germinate prematurely, become mouldy, or rot.

    The problem with very old seeds is that their outer shell dries out over time, and it gets more and more difficult for water to penetrate them. As such, you, the grower, must take some steps to facilitate this process.

    Best Methods for Germinating Old Seeds

    So, the question of how to germinate old cannabis seeds translates to: how do you help moisture get inside your old seeds? The obvious first choice is to pre-soak them before germination.

    1. Place Old Weed Seeds in a Glass of Water

    With old weed seeds, your favourite germination technique, such as the paper towel method or the straight-into-the-medium method, may not work. The reason is simple—these techniques don’t provide enough moisture to penetrate the hardened outer shell.

    Instead, take a glass of water and throw your seeds into it. Twelve hours will be enough for the shell to soften a little and the water to finally get inside and wake up the embryo. Don’t forget to check the seeds regularly. As soon as they crack and the taproot appears, you should take them out. Seeds are living organisms and they need oxygen. Leave them submerged for 24 hours or more, and they may drown.

    In most cases, you can simply use drinking water, but germinating old cannabis seeds may require some further tweaking. Some growers use carbonated water because the presence of CO₂ supposedly helps water penetrate the seed shell. Hydrogen peroxide (a few drops per glass) is said to have the same effect. You may also consider adding some biologically active compounds, such as:

    • Superthrive (one drop to a glass of water)
    • Nitrozyme (10ml/L)
    • Humic and fulvic acids (10ml/L)
    • Rooting hormones

    The problem with these stimulators is that you never know the correct dosage. The information shared on marijuana forums is anecdotal, and legitimate studies have only been performed on other crops. So, if you decide to use any of these additives, do some research or ask other growers, and always err on the side of caution.

    2. Use the Scarification Method

    Another method of making the outer shell more penetrable is scarification, and the most straightforward way to do this is to use sandpaper. Take a matchbox and line its inside with sandpaper, or roll a piece of sandpaper into a tube. Then, place the seeds inside and shake them for a minute.

    This will be enough to make a lot of tiny scratches on the protective outer layer of the shell, allowing moisture to get inside much more easily.

    3. Crack Your Weed Seeds

    Some people buy a special cracking tool for old cannabis seeds. This simple contraption applies mild pressure on a seed until an audible crack is heard. Others simply bite on the seed—ever so gently—until they hear it crack.

    Please keep in mind that this particular method of germinating old cannabis seeds is a bit risky, as are the techniques described below.

    4. Remove the Ridge

    The ridge is quite prominent on the seed. It connects the two halves of the outer shell, and when the embryo pushes against them, it’s this ridge that cracks. However, in older seeds, it’s too hardened by time and needs to be cut off.

    Use a sharp knife to cut the whole length of the ridge, on both sides. Be sure not to cut too deep and damage the embryo.

    5. Surgically Open the Seed

    This procedure is similar to cracking because you’re forcefully opening the seed—not by applying pressure this time, but by using a sharp knife. Please consider this a last resort—suitable only when all else fails.

    Germinating Old Cannabis Seeds Requires Patience

    Please note that, besides poorer germination rates, old cannabis seeds also take longer to sprout. So, how long exactly does it take to germinate old cannabis seeds? While fresh seeds usually germinate in 1–3 days, older beans routinely take as long as 7–10 days or even more. So, be patient, and, if the seed remains dormant, try one of the tricks described above—starting with the least invasive one. It’s also best to try them one after another, as opposed to all at the same time.

    Avoid Putting Old Cannabis Seeds Straight Into the Medium

    Personally, we like germinating weed seeds in soil, but when you’re dealing with old ones, it’s best to regularly check on their progress. This will spare you a lot of nail-biting, because you never know how many days this will take. So, check the quality of your seeds, and, if you have any doubts, choose a more “visual” method, such as germinating in a glass of water.

    Fascinated by the wellness potential of nature, Luke has spent over a decade writing about cannabis and its vast selection of cannabinoids. Creating, researching and writing content for Cannaconnection, alongside several other industry-related publications, he uses strong technical SEO skills and diligent research to bring evidence-based material to thousands of unique visitors.

    Cracking seed shell with pliers

    I had some seeds that I was trying to germinate but nothing happened for like 4 days. These seeds have been in a moist paper towel in my closet for 4 days and nothing happened. No white tap root. So I figured that I’d take my chances and take a pair of pliers and split the shell manually for the seed. Then I put them back in the paper towel. I work up this morning with tap roots showing! Little ones because the seed just recieved moisture. Hope this might help someone in the future!

    Well-Known Member

    thats risky man. you shouldnt even touch the tail that comes out with your hands. cause of the oils you got in your skin.
    it may turn out half cannabi half human

    The Coral Reefer

    I used tweezers to make sure that i didnt cross-breed the plant with myself. They are actually growing quite fast. Faster that my last seeds. One has already dropped its shell and the others are on their way. This was a neat little technique. I cracked 2 out of 4 seeds that i had and the 2 cracked ones germinated while the other 2 had zero progress.

    Well-Known Member

    after i wait for like seven days i get into scarcification of seeds i feel like ther is nutin to lose and sumtin to gain
    most tmes it improves rate of germ
    i normally split at seam wit razor crack off pieces of shell and sandpaper sumtimes i try all kinds of tricks i might try plyers next time

    whatever technech you use try not to damage the inside embrio of seed
    good luck

    Well-Known Member

    Another trick is to peel off the shell at the pointed end of seed. The taproot can then come out easy. As was said, whichever way you go, do not mash or cut the insides of the seed.

    Well-Known Member

    If you scrape the outside seed coat with a knife or sandpaper is increases the chances of water absorption and germination. Pliers seems a bit extreme but if it worked it worked.

    The Coral Reefer

    They have germinated and the cotyledon opened and was green by the time i turned the lights off tonight. This morning they were white. Much progress! I didnt have anything to lose and i took a chance and it paid off! Thanks for all the tips and tricks! We need a thread for tips and tricks or does one already exist?

    Well-Known Member

    lmao!! Thanks, that made my morning!

    Actually what you’ve done is re-discovered an old time technique. As someone else said too, scuffing seeds w/sandpaper also works well. The trick is to make it easier for moisture to get to the inside of the shell casing.

    Well-Known Member

    i just had a seed germinate after a month of sitting in paper towels on a plate on my cable box. i might try “helping” a few of the seeds that haven’t popped yet.


    I need some help.I got some lowryder from attitude n I’m on day five of the paper towel germination n there showing no signs of life. I’ve done this before n Its never took more them three for me.I may have put a little to much water once or twice but I don’t think I killed them.has anyone had there seeds take this long or have any advice on how to speed this process up,cause its slowly killing me on the inside

    The Coral Reefer

    Yeah this same thing happened to me so I figured that i would take my chances and experiment. I actually did this to a lowryder 2 seed and she is growing nicely. Im growing them right in my living room.

    Well-Known Member

    If they don’t germ in paper towels, put it in soil with saran wrap or a dome over it, with light and keep it moist. That worked for two fem seeds we ordered that didnt do anything in the paper towels.

    Detroit J420
    Well-Known Member

    Sometimes you just gotta up the temp. To get them to crack. I think 77f is good distilled water but i do get out my tweezers alot just to help em out a lil get the leaves showen, after there cracked though.

    Well-Known Member

    I need some help.I got some lowryder from attitude n I’m on day five of the paper towel germination n there showing no signs of life. I’ve done this before n Its never took more them three for me.I may have put a little to much water once or twice but I don’t think I killed them.has anyone had there seeds take this long or have any advice on how to speed this process up,cause its slowly killing me on the inside

    Ok first and foremost, killing them with a little to much, well first you woulda seen a taproot, i mean the shell needs to soak up water, and then a tap comes, so to kill them unless they are rotted or mushy you didnt kill them odds are the just are hard ass shells and havent received enough water.

    I am having issues with popping ATM I had like 6 or 7 from this batch i have pop just fine now the next 10 literally are like all 3-5 days inside with warmer temps and no popping, I cut into 2 just to see, inside you can see the baby bundles and tap developed slightly. This makes me wonder if the bun in the oven just takes a tad longer or maybe the shell was 2 hard and towel not wet enough.

    Right now i am messing with bag seeds cause I dont wanna fuck up my nice attitude seeds until i have a pretty solid system down.

    We all have our own plans and ways, I am gonna try a light scoring with a razor blade or scalp, not deep just a light score along either the sharp edge, or maybe a couple over the rounded top and bottom edged on some of these bags seed see if it helps take in some more water and crack. Seeds have some stored energy which is there to help a tap and base leaves develop. but if they use it all breaking the shell they cannot then push to set the tap and break the earth/soil/medium. NO BUENO. ( Learn this farming ** not bud btw real farming ** since I was a child so over 20 years. )

    Also the soaking in water can be good, it can do some harm if your tap water or whatever has toxins in it. I perfer like Arrowhead or other Mt. Spring water, they have no chem and good trace minerals.

    Also the towel has to be wet, I mean soaking wet, not dripping but soaking, you do not want a puddle but moister, it helps it soak through the shell and makes it easier for the tap to absorb.

    Hum what else. I have bad luck on my last batch of 10 first time in years, my guess the towels were not wet enough and I may have had toxins on my fingers or the shells where to hard.

    I am going to try cracking or scoring but cracking sounds a tad risky with $10 a pop seeds to me. ‘

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