Ideally, you want to store your seeds in a cool, dark, and dry place. Whenever possible, keep your seeds in their original packaging. At Royal Queen Seeds, we’ve specially designed our packaging to protect our seeds until you’re ready to plant them.
If, for example, you live in an area with very warm daytime temperatures and cool nights, try to protect your seeds from these changes and don’t store them outside in a shed or garage.
IDEAL CONDITIONS FOR CANNABIS SEEDS
Before germinating your old seeds, try soaking them in carbonated water enriched with fulvic acid, germination booster, hydrogen peroxide, or gibberellic acid. For best results, use room temperature water and soak your seeds for 12 hours in a dark place.
Many people forget this, but it’s true—your cannabis seeds are living organisms. Before they germinate, however, they are in a state of rest (much like some animals when they hibernate). And like all living things, seeds can die. When storing your seeds, you’ll want to give them the optimal conditions to ensure they hold through until you’re ready to germinate and plant them.
For short-term storage, a dark cupboard or drawer with stable temperatures is usually fine. Try to keep your seeds out of areas of your house that are susceptible to the natural temperature changes of your local environment.
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.
Also, you should note that modern fridges have low humidity levels. If the humidity is too low, your seeds will begin using up nutrients.
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.
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:
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.
Here is a quick overview of what will likely happen to cannabis seeds at different humidity levels:
If you are planning on storing your seeds for longer than this, you should consider a refrigerator. Refrigerators are great for keeping your seeds at the low temperatures they require. Moreover, most of the time, fridges are also pretty dark and dry.
Generally speaking, cannabis seeds can be safely stored for anywhere between 1–2 years, especially if they are properly stored in a cool, dark place. Depending on conditions, they can even last up to 5 years.
Light should be avoided because it directly triggers germination. If exposed to light, seeds can lose much of their germination power later on. Many seedbanks elect to protect their seeds by placing them in opaque metal boxes.
Freezing your seeds for long-term storage is also a possibility. However, it is believed that doing so may actually damage your seeds rather than protect them. Some growers even believe that freezing damages the living cells inside of cannabis seeds. Special laboratory equipment can be used to carefully lower the temperature of the seeds in order to prepare them for long-term freezing; however, most growers lack the necessary equipment to execute this process correctly. As such, while freezing may be an option for some growers, it really isn’t for most.
Growers are usually advised to store their leftover seeds in a cool, dark, dry place. But if we’re getting down to specifics, there are actually several environmental factors that can impact the quality of your seeds.
After the hard work of germinating your seeds, it may be tempting to just toss your leftover beans in a bag for next time. However, you may be in for a rude awakening when it comes time to germinate your next batch. If stored improperly, cannabis seeds may no longer be suitable for planting.
Sealing your seed bags and containers is crucial to protecting your seeds from the elements. If your seeds came from a seedbank that vacuum-seals their seeds with silica packs, it may be OK to just store your leftover seeds like that (just make sure to protect them from light). However, if your seeds are scattered, and if you insist on storing them in bags, it may be a good idea to invest in a vacuum-sealer.