Learn how to store cannabis seeds like a pro from the experts at The Flower Shop. Plus, learn more about the methods we use to craft our fine cannabis products. There’s a lot of reasons to store cannabis seeds rather than just planting them in soil and letting them do their work. Whatever the reason, you need to be sure those cannabis seeds stay viable in the long term. Click here to learn how to properly store your seeds until your ready to plant!
How to Store Cannabis Seeds
Imagine you live in a place where growing cannabis at home for personal use is A-okay with TPTB. How would that be?
Well, for a growing number of Americans (no pun intended), that place and time is not some fantastical dream in a nebulous future. It is right here, right now.
Now, we’re not about to lay out all the details about home growing. But we will look at one of the most fundamental aspects of home production. The thing that all growers require. The something that, without it, there can be no adding greenery to your home scenery.
The hows of storing cannabis seeds aren’t too complicated, but they are essential. How you keep your seeds will affect the germination rates and the vigorousness of your plants.
How to Store Marijuana Seeds
Marijuana seeds aren’t the most finicky of seeds out there. But, like all of us, they have needs. Theirs are:
- Temperature stability
How to meet those needs depends on how long you plan on storing them.
How to Store Cannabis Seeds for the Short-Term
If you’re looking to use the seeds soon (think within a couple of weeks), a dark cabinet or drawer with a stable temperature will do just fine.
Storing Cannabis Seeds for the Long-Term
For storage of a few months or so, a Ziplock bag inside a dark container in a quiet corner or crisper drawer of a newer fridge is an excellent way to store your seeds.
Since temperature stability is essential, ensure the fridge does not get opened frequently. Remember, newer fridges are pretty low in humidity, so it is crucial to protect seeds from over-drying by bagging them.
For long-term cannabis storage keep seeds in the freezer. The same rules apply to keeping temperatures stable and things dark.
Some folks like to use food storage sealers for freezer storage, and while it’s not required, it is an excellent way to keep air and moisture out.
How to Store Weed Seeds: What Not to Do
The fastest way to ruin a batch of seeds is to let humidity have its moist way with seeds. Super-dry conditions aren’t optimal for seeds, but average indoor humidity is usually fine.
Some folks in regions prone to higher humidity toss a desiccant pack in the bag, and this works.
Older fridges can be a problem on the humidity front as well. Vacuum sealing with a desiccant can help control this.
Yes, seeds hate wet air, but they’re not too fond of overly dry air, either. Again, average indoor humidity—think 30% or so—is just fine for retaining reasonable germination rates.
Like many seeds, cannabis seeds are rather vampirish when it comes to light. They’re happiest in the dark, and being shielded from the light will extend their viability considerably.
While weed seeds like cooler temps, it’s better to store them at a warmer but stable temperature to minimize exposure to temperature swings.
Temperature changes can signal seeds that it’s time to start germinating, which takes energy. Any energy the seed wastes while considering sprouting is energy lost. You want all that energy packed in that tiny seed so that it gives you its all when it is time to go.
Believe it or not, you can wind up with seed-munching insects if you’re storing them in a cabinet or drawer.
Your best approach here is prevention:
- Keep your storage area clean
- Ensure the environment is not attractive to pests
- Address insect issues in the area
- Keep your humidity levels appropriate
If you find bugs in your seed storage container, spread diatomaceous earth (D.E.) in the storage area. However, take care that the D.E. does not come in contact with edibles.
Is Storing Marijuana Seeds Right For You?
Now, if all of this sounds pretty fiddly, that’s because it can be. Many folks are tempted to try their hand at growing, but it takes a lot of care, precise conditions, and a fair bit of cash for a possibly disappointing outcome.
So, while giving it a whirl might be a fun side trip, you’re likely to get better, more uniform, higher quality product from The Flower Shop than from your garage grow tent.
The Flower Shop has expert cultivators on staff whose job is to create the very best growing environment at our Arizona growing facilities. They ensure that the final product is always absolutely, uniformly knock-your-socks-off excellent.
Our cultivators, top in their field, turn science into magic for a living, from creating microbially diverse, nutrient-rich soil to using spectrum-shifting LED lighting to enhance terpene and cannabinoid production.
But our involvement doesn’t end there. Our cultivators handle processing, extraction, and infusion. Our standout cultivation and crafting practices ensure that you can be confident you’re getting what you need.
Let’s Get Growing
And there you go! If you’re looking to keep your seeds fresh and germination rates high, remember it’s all about temperature, humidity, and light.
And if you want reliably, indubitably perfect weed of the highest quality every time? See our Wellness Experts at The Flower Shop, of course!
How to Store Marijuana Seeds Properly
T here’s a lot of reasons to store marijuana seeds rather than just planting them in soil and letting them do their work. Sometimes you have some seeds leftover from your new favorite weed strain and don’t have the space available where you live to plant it. Other times, you’re buying seeds for later use once you’ve got the time and energy for your weed growing project. Maybe you’d like to hold on to precious genetics until you can seek out another strain to cross it to. Sometimes you’re just stocking up for an uncertain future.
Whatever the reason, you need to be sure those marijuana seeds stay viable in the long term. Properly stored marijuana seeds can last for up to five years and still remain viable, and some strains have been reported sprouting at ten years or more.
However, proper storage is not as easy as it seems, since seeds are looking for any excuse to start sprouting and there are a number of factors that tell the seeds that the time is right to stretch out their roots and branches. Store your marijuana seeds in the wrong conditions and they might end up dead, rotting, or diseased by the time you’re ready to introduce them to the soil.
Fundamentals of Marijuana Seed Storage
First, let’s go over the five main factors to consider when it comes to how to store marijuana seeds, especially for the long term.
Keep Your Marijuana Seeds Cool
When it comes to preserving your marijuana seeds for future planting, temperature is the main consideration. In nature, heat is what tells the seed that the winter’s over, which means that it’s time to break open and start sending roots down and shoots up.
If your marijuana seed is not in the soil, this means that the plant matter inside the seed will begin to germinate. The shell will crack open, letting the plant matter out and moisture, bacteria, and pests in. Without soil to thrive in, the marijuana seed will begin to rot.
41℉ (5 ℃) is the absolute warmest you want your long-term storage spot to be, with the sweet spot being somewhere around 38 ℉.
- A Beginner’s Guide to Growing Marijuana
- Cross-Breeding and Pollinating Cannabis: An Overview
- Can You Tell if a Cannabis Seed is Male or Female?
- Top 10 Seed Banks for Quality Feminized Seeds and More
It’s very important that this temperature remains stable for the long term. If you are refrigerating your marijuana seeds, your best bet is to place them in a separate unit or a spot near the back. Every time that you open your fridge the temperature fluctuates, which can harm the marijuana seeds over time.
While it’s up for debate whether freezing marijuana seeds is an effective method for long term storage, we don’t recommend it unless you know exactly how to cure and prepare your seeds. Otherwise, the frozen water in the seed’s cells can expand, destroying the cell wall and killing the seed.
Watch out for Humidity
Humidity is another enemy in your battle for storing cannabis seeds long-term because any hint of moisture is another clue to the seed that it’s time to stretch its leafy arms and legs. If the marijuana seed shell breaches before it’s in the soil, rot can set in.
However, you don’t want your marijuana seed too dry either. A humidity level of about 5% is the maximum that you want to allow in order to keep the waxy, protective layer surrounding the seed intact without triggering the seed to split open.
Store Your Marijuana Seeds in an Airtight Container
Besides being dark, you want to expose your marijuana seeds to as little oxygen and carbon dioxide as possible. These gasses are what growing plants breathe, as well as the pests that consume them.
If you’re storing cannabis seeds by refrigerating them, make your container as airtight as possible. If you have some vacuum-sealed plastic on hand, even better.
Keep Your Marijuana Seeds in The Dark
Much like heat and humidity, light tells that marijuana seed to wake up because it’s time to spring forth. Even if it’s a halogen bulb inside your refrigerator and not the sun itself, the seed’s natural optimism can still start the flowering process.
Light exposure over time can also damage the surface of the seed, which in turn will damage what’s stored underneath. The solution, much like storing cannabis flower and other products, is to keep your marijuana seeds in a dark or opaque container. Without exposure to light, they’ll keep dozing long term.
Your Marijuana Seed’s Genetics
Some weed strains (and some specific batches of those strains) naturally produce seeds that are hardier and longer-lasting than others. This plays a role in how long you can expect your marijuana seeds to remain viable, so be sure to do some research beforehand.
Storage Methods for Marijuana Seeds
Now that we’ve covered how temperature, humidity, light, air, and genetics work against you when it comes to seed storage, let’s cover the best marijuana seed storage methods.
If you’re storing your marijuana seeds for the short term (a couple of weeks or months), a standard mailing envelope or a tan coin envelope will do in a pinch. If the envelope paper is thick enough, it will protect the seeds from the most harmful ambient light. If the envelope is stored in a cool, dry, dark, and temperature-stable spot like the back of a closet or a drawer, the marijuana seeds should also stay dormant in the short term.
Plus, an envelope makes it easy to write the name of the weed strain, the date of storage, and any other important notes you have. If you want to be extra safe about it, throw some grains of rice or a desiccant pack in there to regulate the humidity.
Of course, this method is only as good at the stability of your home’s climate. If you live in a humid area prone to frequent storms or weather fluctuations like Florida, envelopes will only get you so far without ruining your marijuana seeds.
Unlike a mailing envelope, glass jars are airtight, which makes them much more suitable for storing cannabis seeds long-term. Because many types of plastic can let small amounts of water in overtime, it’s highly recommended that you use glass with rubber stoppers. When storing cannabis seeds long term, you should also throw in a desiccant pack to keep the humidity stable.
Be sure to separate the pack from the marijuana seeds with a couple cotton balls or a paper towel. This will help absorb excess moisture at the start as well. If you have a method to vacuum seal the jar even better. Wrap the jar in something opaque and you’re all set. Marijuana seeds stored at a stable room temperature can last for over a year. Refrigerated they can last a couple years.
If you’re looking to store your cannabis seeds long term, vacuum sealing your seeds in thick Mylar bags can keep your seeds viable for up to half a decade. Because the bags are designed for long-term storage, they’ll work well for your marijuana seeds as long as you make sure they were stored at the right humidity (again, a desiccant pack helps with this) and away from the light. This is one of the best options if you’re refrigerating marijuana seeds.
Seeds of Wisdom
In conclusion, storing cannabis seeds for the long haul is relatively simple. They will stay viable as long as they’re kept away from heat, light, moisture, and air. The more care you put into your storage method, the longer your marijuana seeds will last. However, when it comes to planting marijuana seeds with the most chance of success, sooner is always better.
What are your best methods for storing seeds? Share in the comments below!