Old Cannabis Seeds

Knowing how to store cannabis seeds is important if you want to keep your seeds over long periods of time – how long do marijuana seeds last? Classic cannabis seeds use some of the most reliable, trustworthy and high class cannabis genetics ever created. A great addition to any grow room! Germinating old cannabis seeds – whatever the reason might be, be it that you’ve forgotten about a few seeds you had lying around or you simply didn’t have time to plant the seeds when they were in their prime – is something many of us have had to do.

How Long do Marijuana Seeds last?

When it comes to cannabis seeds, many first time growers tend to have some sitting around from an old friend or baggie. With recent legalization, new growers are deciding to dust their seeds off and start their very own grow, but how long do marijuana seeds last before they won’t germinate?

A typical feminized cannabis plant can produce an enormous amount of seeds – hundreds, depending on how well the plant takes the pollen and how meticulous the pollination process is. It also largely depends on the strain, as some strains are capable of producing much more, especially if their flowers are larger and can hold more. But how long do they last once they’ve been harvested and dried?

How Long do Marijuana Seeds Last?

There are many different factors that come into play when it comes to cannabis seed lifespan, and the most important is conservation. If you’ve obtained your seeds from a seed bank and they come in their own packaging, when it comes to storage you can simply leave them in their packaging in a dark, dry spot; seed banks usually recommend planting within the year.

However, if you’re planning on crossing your own plants and making your own seeds, you’ll need to know how to harvest, dry and store them if you’re planning on keeping them for a while before germinating them; knowing how to store cannabis seeds properly is quite an important tidbit of information if you’re a professional cannabis grower.

The seed is undoubtedly just as important as the final result; without quality seeds, you won’t get quality results. Keep in mind that cannabis seeds are practically living beings ready to be brought fully to life. Many new growers don’t know that cannabis seeds require specific care, and the way you store your seeds can significantly affect their outcome. Check out our Cannabis seeds – Buy Marijuana Seeds section to find reliable strains.

Drying Cannabis Seeds

When working from the start you’ll first need to pollinate the flowers on a female cannabis plant and then harvest the seeds once it’s fully matured. Once you have your seeds you’ll need to dry them out before they can be stored or even germinated – they should be ready to harvest once they’ve gone a dark brown color or start showing dark stripes. Most people opt to dry their seeds by simply drying the flowers and harvesting the seeds once they’ve dried out – it makes them much easier to remove from the flowers.

How Long do Marijuana Seeds Last in Storage?

Once you have your seeds you’re going to want to store them correctly if you plan on using them down the line. In fact, when stored under perfect conditions, you can germinate 5 year old cannabis seeds successfully. Some astonishing cases have been reported of seeds lasting up to 10 years when stored optimally, although the germination times may vary wildly, taking much longer than a fresh seed. For home-growers, storing and maintaining seeds is quite important, and even more so for seed banks; a badly stored seed may not germinate, and if it does it may not grow properly. There are various parameters you’ll need to follow in order to store seeds long-term.

Seed Storage: Light

One of the first things to keep in mind is that whatever container that you store your seeds in needs to block out all light. If you’ve ever germinated cannabis seeds before, then you know that light is an important factor when it comes to the probability of the seed germinating or not. If your seeds are exposed to light for too long, they may end up too weak to germinate; even if they germinate they might have quite a hard time starting off.

Seed Storage: Temperature

The temperature at which you store your seeds is one of the most important factors. If you’re going for something short-term, you just have to make sure that they’re in an area with a stable temperature – do not store them somewhere where there are going to be temperature changes.

See also  Cannabis Seeds Seattle Washington

However, for long-term storage you’ll need to store them at around 6-8° – if you plan on storing a large amount of seeds, we recommend buying a small cooler for that specific purpose to keep them at a low, constant temperature; opening your fridge can cause temperature changes, so keeping them with the rest of your products is probably not the best idea.

Also, remember to use a blacked out container when storing in the fridge or a black bag to ensure that the lights inside don’t affect the seeds when opened.

Seed Storage: Humidity

Humidity is another incredibly important factor that can determine the success rate of your seeds. Relative humidity is essentially what causes seeds to germinate, so they’re quite delicate at this stage and you don’t want them accidentally germinating; keep relative humidity low in their container.

This obviously depends on your climate too, as there are places that have incredibly high humidity and others that are quite dry, which can directly impact how you have to store your seeds. As a general rule of thumb, we recommend keeping them in a low-humidity container, and if you live somewhere incredibly humid you might have to use specific methods to decrease humidity.

Cannabis seeds can germinate with a RH of 40-60%, and humidity higher than that can actually drown them and kill them. However, humidity ranging from 9 – 20% may also cause a myriad of issues such as insects, fungi, and even seed sweating due to excessive heat. The ideal humidity range in which to store your seeds is between 20 to 30% RH.

How Long do Marijuana Seeds Last

Taking into account the previously mentioned parameters, the best way to store your cannabis seeds for long periods of time is by vacuum sealing them and then putting them into an opaque container or bag so that no light gets to them. Keep them at a constant temperature of 6-8°. Some growers use products such as silica sachets to keep humidity down even if the outside temperature/humidity becomes drastically altered – this is a good idea if you live in more humid or hotter climates.

Keep in mind that if your seeds experience too much light or temperature changes they may end up using up their nutrient reserves, which would render them useless.


The Dutch Passion Classics seed collection includes all the best old school weed strains. You can expect the great taste and aroma from yesteryear alongside heavy yields and powerful effects. Classic strains and old weed strains are often the most appreciated varieties. Cannabis seeds of old school weed strains have become incredibly popular in recent years. They are fully proven and reliable.

Active filters

Amsterdam Amnesia®

Amsterdam Amnesia

Auto Think Different

AK420 Autoflower

Auto Power Plant®

Power Plant X Think Different

Auto Skywalker Haze®

Skywalker Haze x Auto Amsterdam Amnesia

Skywalker Haze®

Original Skywalker x Amsterdam Amnesia

Auto Mokum’s Tulip®

Mokum’s Tulip x Auto Colorado Cookies

Auto Cinderella Jack®

(Cinderella 99 X Jack Herer) X Magnum

Power Plant®

Original South African Power Plant

Mokum’s Tulip®

Gelato X Sherbet

Auto Ultimate®

The Ultimate X Auto Mazar


Mad Scientist X Voodoo

Auto Think Big®

Think Different XXL selection

Think Fast®

Think Different X Power Plant

White Widow

Classic F1 White Widow

The Ultimate®

Original The Ultimate

White Widow X The Ultimate®

White Widow X The Ultimate

Auto Xtreme®

Outlaw Amnesia (Amnesia x Super Haze)

Auto White Widow®

White Widow Autoflower

What are true classic / old school cannabis strains?

Classic cannabis seeds use established, fully proven genetics. Classic strains are based on genetics which have stood the test of time. Modern cannabis growers should feel reassured that classic old school genetics will be easy to grow in a range of grow systems and grow mediums. Many of these classic strains are cannabis cup winners with thousands of repeat growers. If you don’t want to take any chances with your next cannabis seed purchase then put your mind at rest and buy some classic cannabis strains. Top quality results are guaranteed!

Buy classic cannabis seeds online?

Buying your classic cannabis seeds online is easy on Dutch Passion’s website. You can get your cannabis seeds shipped via regular mail or next day delivery. You can choose from several cannabis cup winning classic strains which come available in feminised seeds, autoflower seeds or regular cannabis seeds.

Whichever classic seeds you buy, you can expect some of the finest strains you have ever grown. The classic cannabis seed collection contains only the most reliable and dependable authentic classics. If you’re unsure which seeds you want to grow next, you won’t go wrong with one of these award winning Dutch Passion classics!

Best feminised classic cannabis seeds

Feminised classic cannabis seeds includes some famous strains such as Power Plant and White Widow. New releases with classic genetics such as Skywalker Haze and Amsterdam Amnesia deliver very high THC levels. The Ultimate is quite possibly the heaviest yielding strain ever released by Dutch Passion and more recent releases such as C-Vibez and Mokum’s Tulip pack a delicious taste with mind numbing potency.

See also  Drying Cannabis Seeds

Best autoflower classic cannabis seeds

Autoflowering classic cannabis seeds combine the speed/convenience of autos with the proven, bullet-proof genetics of classic genetic lines. Auto Cinderella Jack with THC levels recorded at over 25% could be the world’s strongest auto. There are many others to choose from, including Auto Power Plant, Think Different, Auto White Widow, Auto Skywalker Haze, Auto Mokum’s Tulip and Think Big. Autoflowering classic cannabis seeds grow from seed to harvest in around 10-11 weeks under 20 hours of daily light. Outdoors they take a few weeks longer.

Best regular classic cannabis seeds

Regular classic cannabis seeds include White Widow, White Widow x The Ultimate and Power Plant. Regular seeds produce approximately equal numbers of male and female plants and are often grown by old school growers or those seeking to create their own cannabis hybrids and crosses.

Which is the most old school cannabis strain of Dutch Passion?

Power Plant and White Widow are two original old school cannabis classic strains which have been fully proven over several decades. Between them they have won numerous cannabis cups. As two of the most established old school cannabis strains, original White Widow and Power Plant are available in feminised seeds, autoflowering cannabis seeds and regular seeds.

What is the average flowering time of classic cannabis strains?

The average bloom time is around 9 weeks for photoperiod feminised strains. However when growing sativa strains such as Skywalker Haze, C-Vibez or Amsterdam Amnesia some of the slower phenotypes can take up to 2-3 weeks longer.

When growing autoflower strains from the classic cannabis seed collection you can expect an indoor grow cycle of around 75 days from seed to harvest. Note that outdoors, autoflower seeds often take 2-3 weeks longer compared to an indoor grow cycle.

What is the average yield of classic cannabis seeds?

The classic strains all tend to yield heavier than average. Strains such as The Ultimate (& Auto Ultimate), Power Plant (& Auto Power Plant) along with Think Different and Think Big are notable for their extremely heavy yields.

What is the average THC-content found in classic strains?

Expect THC levels ranging from high to extremely high! The classic cannabis seed collection are all potent customer favourites that have proven their strength over many years with multiple cannabis cups behind them.

Two strains in particular, C-Vibez and Auto Cinderella Jack will appeal to those that want the strongest possible harvest. Both strains can routinely exceed 20% THC when grown in good conditions. Auto Cinderella Jack has even exceeded 25% THC making her one of the strongest autoflower seeds available.

Many of the other classic strains achieve up to, and around, 20% THC making the entire collection a safe selection for anyone wanting a reliably powerful strain using fully proven genetics.

How many Dutch Passion classic strains won a cannabis cup?

Several of the collection have won cannabis cups including Power Plant, Skywalker Haze, Auto Cinderella Jack, Mokum’s Tulip and White Widow. The Dutch Passion team will continue to submit classic strains at future cups, so expect more prize winners!

How to Germinate Old Cannabis Seeds

Germinating old cannabis seeds – whatever the reason might be, be it that you’ve forgotten about a few seeds you had lying around or you simply didn’t have time to plant the seeds when they were in their prime – is something many of us have had to do. Whatever the reason might be, it can be reassuring to know that old cannabis seeds aren’t necessarily write offs. Old seeds can germinate! However, you’ll need to follow the right steps to have the best results with them; old cannabis seeds won’t be quite as easy to germinate as their younger counterparts, after all. Keep in mind that if you are serious about growing,it is always advisable to buy fresh seeds from a reputed seed bank.

Is it Possible to Germinate Old Cannabis Seeds?

First things first, is germinating old cannabis seeds really possible? Well, yes! Old cannabis seeds that haven’t been germinated before can absolutely germinate. However, their ability to germinate will deteriorate with age, so you may need to take some extra precautions for the best results. It’s worth noting that germinating old cannabis seeds will invariably be a tricky task and you won’t get the same results as you would have done from young cannabis seeds.

See also  How Long For Cannabis Seeds To Sprout In Soil

Right Storing Methods are Absolutely Essential!

It’s absolutely possible to germinate old cannabis seeds – but it is important to note that you need them stored properly. Indeed, if you’ve randomly found a stray few seeds behind the couch cushions, they are not going to germinate well; they’ve not been stored properly and will have died. However, if your cannabis seeds have been stored properly, they should still be able to germinate; with the right conditions, cannabis seeds can last ten years or even longer and retain their germination potential to a degree.

When storing your cannabis seeds for long term storage, they need to be given somewhere dark, cool, and with an appropriate humidity. For long term storage, you should either refrigerate them or, even better, freeze them in a vacuum sealed casing. Protection from insects and pathogens is also of the utmost importance, of course.

Are My Seeds Still Viable?

To start with, you’ll want to know whether your old seeds are viable – if they’re not going to germinate, what’s the point putting time into them? The easiest way to check this is to put them in a glass of water. If the seeds sink, they’re probably viable still; if they float, they may not be. For floating seeds, you can leave them in the water for up to 72 hours and monitor for any signs of germination as a final check.

Getting Germination Started for Old Seeds

Whether your seeds have been refrigerated or frozen to prolong their life, they’ll need some hydration to trigger germination. A humidity of 40% will trigger germination, but over 60% will usually result in the seeds drowning and dying, so this balance is important. This is also why your old cannabis seeds need to be stored at an appropriate humidity, as if the humidity is too high the seeds will begin to germinate before you want them to!

Prepare the Seed Properly

For old cannabis seeds, germination can be more difficult. This is owing to the seeds’ tougher outer shells, as the shells harden over time; with old seeds in particular, this can be especially problematic. A hard seed shell can make it hard for the seedling to emerge from its shell and can also hinder moisture and warmth from getting into the seed. So, they will need a little helping hand to get started.

In order to do this, there are two options you can try. Putting the seeds in a glass of water with a few drops of hydrogen peroxide for 24 hours can slowly dissolve a little of the seed casing, which may help.

Alternatively, you’ll want to scar the seed if your seeds are particularly old and really struggling. This involves getting a small amount of sandpaper and gently scratching away at the shell of the seed to remove some of its hard casing. This will make it easier for the seed to germinate. For especially old seeds or seeds that are struggling to germinate, cutting a very small hole in the shell of the seed may also be a good way to get the germination process started!

Germination Methods

Once your seed is ready, you’ll need to choose the right germination method. The most recommended method for new growers is to use wet paper towels, as follows.

Take two wet paper towels, and place one over a plate or similar surface. Gently place the seeds on top of the towel, well-spaced, and cover with the other towel. Et voila – the seeds are ready to germinate! Just make sure you choose a paper towel that’s free from nasty added chemicals.

Another germination option is to plant the seeds directly in the soil. Though this makes germination a little trickier for the seed, it’s much easier for new growers as you won’t have to worry about transplanting the seed. Make sure you make a big enough well in the moist soil before planting for best results.

You could also try using rockwool. Rockwool cubes are a great option for both hydroponic and conventional growing systems and can have their pH altered to the desired level and are easy to manage. As such, they’ve become a popular option for many people wanting to germinate young and old cannabis seeds alike!

Old cannabis seeds can be notoriously stubborn to get to germinate, however, they are often still viable if stored correctly. So, don’t write off your old cannabis seeds – they may just need a little more TLC to get going!

Disclaimer: This article is intended for information and entertainment purposes only and is not intended to reflect the specific views of the publication.