Keep Cannabis Seeds

ILGM

Buy Cannabis Seeds Online

If you have some cannabis seeds but are not ready to plant them yet, you need to know how to store them properly. Here's our complete guide. 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? Cannabis seeds are a product that we must keep in the best condition possible to prevent them from suffering the slightest damage. As a living organism, we must follow…

How to Properly Store and Preserve Cannabis Seeds [Explained]

If you don’t begin with great seeds, you can forget about producing a harvest of high-quality marijuana. A lot of growers seem to forget one simple fact: Your seeds are alive! Although cannabis seeds are fairly durable, improper storage can ruin them. If you’re paying $10-$20 a seed, losing a full batch is an expensive mistake.

Before your marijuana seeds germinate, they are in a similar state to animals when they hibernate. Like all living organisms, your seeds can die if you don’t take care of them correctly. The good news is that cannabis seeds can last for five years after harvest with proper storage.

In this guide, we outline how to store and preserve your cannabis seeds. We focus on the following:

  • Light
  • Temperature
  • Humidity
  • Storage
  • Insects & Pests
  • Germinating old seeds

EDITOR’S CHOICE – Homegrown CannabisCo

Homegrown CannabisCo are the masters when it comes to seeds. Offering a massive variety of cannabis seeds that are well categorized, not only does this company create a resource for superb quality options including feminized seeds, it also provides extensive growing information for those looking for some support along their journey.

Keeping Light Away from Your Marijuana Seeds

You must keep your seeds in a location that is cool, dark, and dry. It is best if you keep the seeds in their original packaging. When they are exposed to temperature changes or light, cannabis seeds begin using their store of nutrients. This is a disaster because they ultimately won’t have the nutrients to germinate.

When they are exposed to temperature changes or light, cannabis seeds begin using their store of nutrients.

Make sure your seeds remain away from light, as it can directly trigger germination.

What’s the Right Storage Temperature?

The best temperature to store your cannabis seeds at is between 43- and 47-degrees Fahrenheit. The lower the temperature, the less likely your seed is to germinate unexpectedly. Experienced growers tend to have special refrigerators to store their seeds. Ideally, your fridge is a no-frost model. If you can place the seeds in the fruit and vegetable section, that is even better.

Another option is to freeze the cannabis seeds. If you go down this route, please ensure that you vacuum pack them first. Then put them in a dark container. Also, it would help if you germinated these seeds immediately once they come out of the freezer. Don’t allow them to thaw first.

What About Humidity?

Here is a quick overview of what will likely happen to cannabis seeds at different humidity levels:

Your cannabis seeds need a certain level of moisture for germination. If the humidity level gets too high, your seeds will rot in storage. An extremely low level of humidity of around 8-10% is suitable only for long-term storage. If it drops below 8%, you offer any insects present in the seeds the chance to become active and start reproducing.

The Right Storage Options for Your Cannabis Seeds

You now understand that you must store the seeds away from direct light. We have also outlined the need for relatively low humidity and a refrigerator-level temperature. Different options are available depending on how long you intend to store the seeds.

Short-Term

If you only require short-term storage, a dark drawer or cupboard is sufficient. The most important thing, regardless of the duration of storage, is to avoid temperature and humidity fluctuations. Rapid variations in temperature, in particular, can destroy your seeds. If you live in a location with warm daytime temperatures and cold nights, avoid outside storage.

For short-term storage, place the seeds in a container with desiccant. Seal it, and place it in a cool, dark place.

Medium-Term

Once you enter medium-term storage (a few months), it is time to use an airtight container. Examples include a mason jar or Ziploc bag. Place this sealed container in the fridge. Remember that opening your fridge can cause significant temperature fluctuations. As a result, it is ideal if you have a second fridge that is seldom used.

Also, you should note that modern fridges have low humidity levels. If the humidity is too low, your seeds will begin using up nutrients.

Long-Term

If you want to store your seeds for at least six months, use a vacuum-sealed container. You can achieve this effect by removing all the air from a Ziploc bag. There are also special vacuum-sealed containers available online. Put the sealed bag in a dark container and put it in the fridge.

You also have the option of placing the seeds in the freezer. Remember, though; you need to germinate them immediately upon removal.

A Note on Insects & Pests

Imagine paying $100+ for seeds, going to the trouble of storing them, only to find that insects ruin them. Unfortunately, all you need is one insect in a container to destroy all of your seeds. The first consideration is to avoid exposure to ultra-low humidity. However, for long-term storage, this is precisely what you are supposed to do!

One option is to spread diatomaceous earth (D.E) where you store them. This is a type of sand that has a fossilized algae base. Crucially, for our purposes, it serves as an excellent natural insecticide. Unfortunately, you shouldn’t use D.E if you plan to store your seeds in a fridge with other food.

Imagine paying $100+ for seeds, going to the trouble of storing them, only to find that insects ruin them.

It would help if you also stored your seeds as high above the ground as possible. This reduces the possibility of a pest like a rodent coming in and feasting on the seeds.

See also  Bulk Marijuana Seeds

Insects and pests also thrive in dirty storage areas. As a result, you must ensure the storage area remains clean. Otherwise, you won’t just attract pests to your seeds; microbes will form and damage the seeds. Do you want to consume marijuana from contaminated seeds?

Germination

You can ‘test’ your seeds once you have removed them from storage. Place them in water. If they sink, they should be fine. However, if they float, it is more likely that they are bad seeds. You can still try to germinate, but there is a greater risk of producing poor-quality cannabis, or else the seeds fail to sprout. You can keep floaters in water for approximately 72 hours to see if they sprout a tail.

If you have old seeds not stored in ideal conditions, there are still a few ways to germinate them.

  • Remove the hard ridge with a sharp knife.
  • Soak the seeds in carbonated water with germination booster, fulvic acid, or hydrogen peroxide. Use room temperature water, and perform this pre-soak for at least 12 hours in a dark area.
  • Scratch the tough outer shell with sandpaper. Believe it or not, this process could help warmth and moisture get inside. This process is called ‘scarring’ and should happen before you soak the seeds.
  • Make a small cut into the shell as a last-ditch attempt to get it to sprout.

Final Thoughts on Storing and Preserving Cannabis Seeds

If you purchase marijuana seeds and intend to use them almost immediately, you should have no issues. Even so, it is probably best to keep them away from direct light. In the short-term, a dark cupboard is sufficient as long as the temperature and humidity are reasonable.

Once the goal is to store cannabis seeds for months rather than days or weeks, everything changes. You need an airtight container, which you should store in a fridge. Include a vacuum-sealed container if you plan to store the seeds for several months or longer.

When storing cannabis seeds, you must ensure they are not exposed to germination conditions. This means keeping them away from direct light. Also, store in 20-30% humidity (8-10% for long-term storage) and a cool temperature. Keep the environment clean to avoid pests, and consider the tips above for germinating old seeds.

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.

See also  Weed Seeds Nj

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.

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.

How to Keep Cannabis Seeds in Perfect Condition

They are where it all begins. The care you give your cannabis seeds will determine not only how your plants grow, but also the final results of your harvest. As we are dealing with a natural product that needs to develop, the conditions under which it is stored will have an impact on their subsequent yield. Thus, though marijuana seeds are quite robust and autonomous, if you want to avoid unwanted setbacks when you plant them, you should take steps immediately after obtaining them.

Storage temperature: 6° C / Germination temperature: 24° C

Note these two temperature limits to calibrate the range in which you operate. Keep in mind that the ideal temperature to store seeds is around 6 to 8° C. Hence, the most expert growers have a refrigerator just for this purpose, with low temperatures being constantly maintained. The same is true with regards to humidity: if you do not want your seeds to suffer any damage it is advisable to keep them in places with a relative humidity of around 20-30%.

To keep your seeds in a cool place you’ll only have to make some space for them in your refrigerator at home (if it is a no-frost model, and in the fruits and vegetables crisper, even better), though ensuring that it is dry enough for their proper preservation will be a bit more complicated.

Humidity control via micro conservation in Eppendorf tubes

To keep humidity low, it is ideal to have some sealable containers on hand. To do this, a highly recommended option is to use Eppendorf tubes, a standard piece of laboratory equipment used for the preservation of liquid samples, and the very ones in which we provide our customers with our seeds.

These are small cylindrical containers with conical bottoms, made of polypropylene, and with hermetic seals. With this method of micro conservation the containers full of seeds are protected individually, in such a way that, even if there are variations in the outside atmosphere, inside the container the humidity conditions are constant.

To ensure this we place small pearls of silica gel inside the tubes so that, even if the outdoor humidity rises, or the temperature varies, we can be confident that the air is completely dry inside. The cap of the Eppendorf guarantees that no humidity gets in, but the silica gel also ensures that, if any were to penetrate it by accident, it would be immediately absorbed by this material.

If you do not have any of these containers, you can always use some opaque and airtight plastic bottles, which will also do the trick. Inside, along with seeds, it is a good idea to place some dry rice or silica crystals, separated from them by means of a cotton ball or paper. These elements will absorb moisture from the atmosphere, which, depending on one’s location, can be around 25% or higher.

See also  Discount Cannabis Seeds

Run from the light

You must not forget that light is another of the factors that directly impact seed germination. Therefore, you must be sure that you prevent light from shining on the seeds that you will later be planting. If exposed to light, they can lose much of their germinative power. This is why at Dinafem we place our Eppendorf tubes in opaque metal boxes, which protect the seeds from light and any possible crushing or breakage during their transportation or handling.

If you follow these guidelines you can preserve your seeds for several years. In fact, there are experts who contend that, if storage conditions are ideal, there are seeds that will last for up to a decade.

Labelling the different strains, essential to differentiate between them

It may seem obvious, without a doubt, but don’t forget to label the different strains you have. Once you store the seeds in their containers you should only open them to plant them. It is not advisable to open and close the container you are using, as the protection your seeds are provided is immediately lost once it is opened, and fluctuations in temperature and humidity can be highly detrimental.

Labelling the strains you have is even more vital if you cannot see the seeds. This can be the case if, for example, you follow the advice of some growers, who instruct more inexperienced growers to store their seeds in analogue film tubes. In cases like this you can simply stick a small label on it and jot down with a pencil the name of the strain in each tube, which should be placed, in turn, inside a piece of Tupperware to prevent its contents from deteriorating.

Other tips for storage

If you do not plan to store your seeds for a long time, but rather intend to plant them and harvest them as soon as possible, perhaps it will not be necessary to steal space from your fruits and vegetables in your refrigerator. Some recommended storing seeds in a closet located in a dark part of the house, where the natural light of day does not affect them too much, and so that they are kept dry and, more or less, cool. This location can be a good choice as long as you are going to plant your seeds soon.

Whether you choose to store your seeds in a refrigerator designed exclusively for their maintenance, or in a dark corner of your house, you will have to pay attention to other risks that can end up damaging them. Many experienced growers stress that seeds must be dried correctly and left under proper humidity conditions to prevent mould from appearing inside the receptacles. To keep this from occurring, in addition to drying the seeds properly, it is a good idea to always use silica gel when storing them.

Some potential hazards

Another threat that can ruin all your efforts are insects. Just one in your container is enough to render all the seeds inside useless. To prevent this it is advisable to spread diatomaceous earth where you store them. D.E. is a kind of sand with a fossilised algae base. It is inert and non-toxic, and functions as an invaluable natural insecticide. If you keep your seeds in your fridge with other foods, this will not be a good place to use this type of substrate. However, if you have a refrigerator just for this purpose, or a simple closet, you will be able to use this trick.

If a container you are using is left open, and a rodent somehow gets into your house, the consequences can be dramatic, both for you and your harvest, of course, because the animal will enjoy a great feast at your expense. This is why, among other things, something as simple as placing your containers up high can be a good way to prevent such disasters.

There are many factors to keep in mind when it comes to storing cannabis seeds. Keeping an eye on the temperature, light and humidity is vital, as they can affect your seeds’ germination capacity; if they normally germinate within 48 to 72 hours, when stored under poor conditions it can take up to 6 to 7 days. Or never. But this is not enough. You must also protect them from other external agents that, without your knowledge, can end up ruining your next harvest, or one you had planned for a later date.

Author

D. Civantos Professional journalist and blogger, I’ve, for more than a decade, been the head of Nexo Contenidos, a company specialized in the cannabis world and in wide-ranging digital media. You can find me not only on Dinafem, but also on Strambotic, Cooking Ideas and many other blogs floating in the uncharted waters of the net. However, when I feel most at ease is working with cannabis, one of my biggest passions from a very young age that has now become the main focus of my work.

Categories

  • Cannabis activism
  • Hot news
  • Cannabis Genetics
  • Cannabis Growing
  • Growing techniques
  • Trimming techniques
  • Biological prevention
  • Organic Growing
  • Fungi
  • Indoor Growing
  • Outdoor Growing
  • Harvest
  • Grow Reports
  • Nutrients and fertilizers
  • Plagues
  • Medical Cannabis
  • Weed Recipes
  • CBD
  • Risk reduction

Most popular posts

Can marijuana lead to addiction?

Differences between cannabis and hemp

Cannabis types and varieties

Don’t miss any posts!

Subscribe to our newsletter and stay up-to-date with the latests cannabis news.

How useful was this post?

Click on a star to rate it!

Average rating 5 / 5. Vote count: 1

No votes so far! Be the first to rate this post.