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How To Make The Most Of Spare Cannabis Seeds

How To Make The Most Of Spare Cannabis Seeds

Last updated January 28-2020 Published January 28-2020

1. How do you end up with extra cannabis seeds?
2. 5 ways to make the most of leftover cannabis seeds
2a. Experiment with different growing setups
2b. Turn spare seeds into a tasty snack
2c. Animals love them too
2d. Sell them, or pass them on to friends
2e. Start your own private seed bank

Dear cannabis grower, if you find yourself with leftover seeds, whatever the reason, please do not throw them away! Instead, read this article on how to make the most out of spare or accidental cannabis seeds. We’ve collated 5 interesting things you can do with them that are definitely worth checking out.


How to make the most of spare cannabis seeds

If your goal is to grow sinsemilla—the kind of cannabinoid-rich cannabis you smoke, vape, eat, etc., you are unlikely to do anything but raise all your seeds to maturity. But, it could be that you ended up with some extra seeds, either because your starting point was bagseed and you spared some, or because some developed throughout your grow. Speaking about the latter, if your plants experience significant stress during the vegetative stage and/or throughout the flowering period, you may face some problems with hermaphroditism. This in turn can cause accidental pollination of female flowers, which will force them to start producing seeds instead of buds.

The same can happen if you allow male plants to fertilise females. This is why regular seeds must be vigilantly observed for sex characteristics as they develop into flowering plants—before males have a chance to release pollen and thwart your entire operation.

Hermaphroditism happens because cannabis plants have the capacity to produce both male and female flowers on the same plant. Unless you chose feminized seeds (which ensures a great deal of success in growing female plants only), you could end up with a hermaphrodite in your batch if plants undergo one or more of the following forms of stress:

• Light stress: Caused by unwanted or poorly thought-out changes in photoperiod, poor functioning of your timer, hot spots in lighting.

• Water stress: Caused by poor water quality, excess or lack of water, incorrect pH, incorrect water temperature.

• Environmental stress: Caused by adverse temperature and humidity levels in your growing environment, or by pests or fungi targeting your babies.

• Nutritional stress: Caused by excessively high or low concentrations, incorrect pH, wrong nutrients for the growing stage.


Whatever the reason you ended up with some leftover cannabis seeds after your harvest, here are 5 alternative ways to make the most of them, rather than just throwing them out.


You forgot to take into account those few extra bullets in the barrel; well, now you got them, so you’d better make good use of them! Take this chance to experiment with a different growing setup than what you’re used to. For example, you could try a budget hydroponics setup, or a guerrilla grow, or something else. Go budget, but dare to try some different techniques! The seeds you’re using are “spare” anyways. This will give you a unique chance to learn by experimenting, without the fear of wasting precious and expensive seeds if something goes wrong. It’s a nothing-to-lose seed, so why not use it to learn a new grow technique? The additional benefit: If it goes well, you just grew an extra plant—get ready to harvest!


Hemp and cannabis seeds are arguably among the most nutritious seeds available. In fact, they are rich in protein, fibre, healthy unsaturated fats (omega-3 and omega-6 fatty acids), and vitamins A, E, D, and B. Plus, they contain an impressive array of minerals like sodium, potassium, iron, and magnesium. You can eat them raw (shelled or unshelled) or roast them. You can have a handful of them just like that, or add them as a garnish. Neither hemp nor cannabis seeds have any measurable THC in them, so you can eat them without worrying about getting high.


Guess what? Cannabis seeds are not only good for humans, but animals too. Your furry or feathered friend will benefit from all the nutrients we just mentioned. Mix the seeds in with their usual food and let their digestive system do the rest. Don’t have any pets? Well, leaving them available for wild birds or rodents in an outdoor feeder will make a lot of passing animals very happy!


Sourcing certified seeds from a reputable seed bank is by far the best option, and if you turn to the street to buy and sell seeds, it’s pretty much a no man’s land in terms of quality and legality. Local regulations may vary, and one should always exercise caution herein. Another—possibly safer—option is to pass your leftover seeds on to your friends, without involving money in the matter. This, alongside transparency about where you sourced your seeds, can make for a great way to inspire someone to start their own cannabis growing journey.


This is perhaps the most ambitious pursuit you can try with your spare seeds: breeding. It involves patience and precision in noting the characteristics of different cannabis strains and their associated seeds. With time, you will have a great collection of genetics that you can cross, keep as mother plants, etc. And if you start with mystery seeds, well, go back to our first suggestion: Use them to experiment and expand your repertoire as a grower!

Here they are, our five suggestions on what to do with your spare cannabis seeds! Instead of throwing them away, put your leftover seeds to good use. In a time when recycling and upcycling are so important, weed lovers shall also do their share!

If you have spare cannabis seeds and want to put them to good use, this post is for you. Here are 5 cool things you can do with leftover weed seeds.

What to do with marijuana seeds

As cannabis consumers, you may occasionally find seeds in your bud due to hermaphroditism, stressed plants, light pollution, inexperienced growers, or just the luck of the draw. Before you call the dispensary and ask to speak with the manager to complain, relax. Don’t panic, either.

Seeds in your weed means that the buds have been pollinated — either from another male plant or from the plant’s own hermaphroditic male clusters (those dreaded banana-looking growths). When you buy feminized, autoflowering store-bought seeds, they are hand-selected and almost always better than random seeds found in bud by accident. This is because there are higher chances that the seeds will yield female end products. Regardless, when and if you find seeds in your flower, there are several options for utilizing them in ways that doesn’t involve a trash can.

Leading cannabis horticulturist Ed Rosenthal, who has grown and experimented with cannabis his whole life, was able to lend a hand. When we asked Rosenthal what the best course of action is in the event that you come across seeded cannabis, he told MERRY JANE, “Be sure to pick out all of the immature seeds. You don’t want to smoke those. And set aside the healthy mature seeds for later, which may be worth growing.”

The larger, darker, viable seeds are distinguished in appearance from the smaller, whitish, immature seeds, which are a little harder to find inside the bud. Seeded cannabis is generally lower quality than top-shelf sinsemilla, but it’s best used in edibles, says Rosenthal. This is because all seeds will be removed in the process anyways.

Now that you have picked out your seeds and separated them from the cannabis, there are a lot of different things you can do with them. Here are five ways novices can use leftover seeds.

Grow a Pot Plant

Why not test out your cultivation skills with a hobby plant grown in your window sill? While you shouldn’t expect a high yield, or even expert-level cannabis, experimenting with plants is fun. Look at master cannabis bonsai growers like Budzai or Bonsai Empire for inspiration. The possibilities are endless, and the stakes are low.

Go Guerrilla

Spread a little love on your next hike in a hidden wooded area — Johnny Appleseed-style. Then, simply walk away. Let nature run its course from there! Who knows? You may start noticing flourishing wild patches of cannabis wherever you dropped them. Or, if you’re inclined, plant the seeds somewhere public, like a park, and see what happens. Just don’t take credit for this, as it’s likely a felony!

Return the Weed

Try to return the seeded weed at the dispensary. In almost every case, the budtender will say “no.” That would be like trying to return fruit at the grocery store. But seeded cannabis is weighed down by the seeds, making it lesser quality, so inform them of the sub-par cannabis and move forward.

Save Them and Eat Them

Can you eat cannabis seeds like hemp seeds? According to Quora, yes. They can be unshelled, shelled, or roasted. Like hemp seeds, there are some benefits, though not the same benefits as, say, an edible infused with THC and CBD. Rich in Omega -3 and Omega -6 fatty acids, eating seeds can help protect your brain. It may also help prevent mental health issues, dementia, or Alzheimer’s. Seeds are also rich in vitamins A, E, D and B, plus they are chock full of minerals like sodium, potassium, iron, zinc, and sulfur.

Sell Them (check local laws first. )

As a consumer there aren’t many ways to distinguish one cannabis seed from another. Reputable seed sources are trusted for their consistent quality, but buying seeds off the street is pretty much a no man’s land. Perhaps someone you know could use seeds for one purpose or another. Be careful, however, because the murky definition of the legality of cannabis seeds depends on what state you live in.

Ambitious Bonus Tip: Start a Seed Bank

Grab a journal like Gold Leaf’s grow planners, or take a more modern approach with a growing app like GrowBuddy. Those notebooks can be used for seed data, too. Jot down your notes, and store seeds according to the strain that you found them in. Mystery seeds are great for future experimentation!

When and if you find seeds in your flower, there are several options for utilizing them in ways that do not involve a trash can.