I just had success planting some Blue Boy cornflower seeds that I had from 19 years ago!!! Knowing how long seeds last and will be viable for is vital when planning your seed purchases, cleaning up your inventory, and knowing how many to purchase. Heat and moisture can stimulate your seeds to sprout so as long as these are placed in a dry and dark place these can be used up to ten years. [...] salad / lamb’s lettuce). Thanks so much for this helpful list! Clarkia - 2 years. Veg and flower seeds and how long they are at their best: Veg seed No of years Flower seed No of years Asparagus 3 Ageratum 4 Aubergine 5 Amaranthus 4-5 Beans 3 Anthemis 2 Beetroot 4 Anthirrhium 3-4 Broccoli 5 Calendula 5-6 Brussels sprouts 5 Celosia 4 Cabbage … Ever wondered how long you can save your seeds and have them still be viable? Many seeds have been viable for much longer, while some a bit shorter. Some seeds, such as peas, can be tested for viability by placing them in a bowl of water. You were expected to provide your own container, and though they did have little paper envelopes for use, they were useless for long-term storage, and if they happened to get damp they were ruined. How interesting that this showed up in my email this morning, when just yesterday I sent a note to PineTree asking these very questions! Thank you so much for this very informative explanation about seed culture! That's basically 99% viability on corn seed as much as 18 years old. Now, that new seed you just ordered this year will be all good to go in terms of germination. Tips for Storing Seeds. When your list is complete click “add all to cart” on the bottom right. I have seeds in my freezer that were purchased 5 years ago and that means that I will just have to allow for a poorer germination rate. Hi there! How Long Do Cannabis Seeds Remain Viable? So, I can honestly say that, if stored properly, tomato seeds can remain viable for at least 12 years. Very useful post. This is my first time i visit here. While proper storage conditions will help to prolong the lifespan of seeds, the viability of many types of seeds will begin to decline regardless. Choosing the Perfect Ones for You! While my husband and I have had gardens for years, because of family issues, the last 2 years we have had none and I missed it so. Great article! How to Tell if Marijuana Seeds are Viable. Microgreens are particularly sensitive to seed quality, which degrades with improper storage. Inevitably they had a huge sack of them, mostly the black Kodak capsules with the tight-fitting grey lids, and they were perfectly happy to give them to me. In this article, we will set our focus on how long do cannabis seeds last. Below is a listing of the approximate life span of vegetable, herb, and flower seeds when stored properly. This year will be the new garden, and I can’t wait, but needed to know what was still good, and what might not work so well. Thank you. I found a much better method. Anything to that? Seeds should be stored in their original packaging in a cool (below 50 degrees Fahrenheit), dark place where their moisture content will stay relatively stable. Thanks! Very good and informative article! Hesitant to try old seed AND hesitant to throw away. The second packet was Henry Field's Cotton Candy from 1996; of 250 seeds, 248 germinated. Surprised that you tried with sweet corn and it worked. Plus, the boys and I enjoy getting a glimpse into the secret world of germination! If you are taking inventory, here is a useful chart that shows how long seeds are viable when stored properly. Keep up the good work. Their catalog of seeds they offer is heaped with excellent information and a broad selection of plants. Thanks. It will require a little thinning, but I am guaranteed of getting the number of end plants that I need. That is the biggest long-term germination success story I have ever had. But, what about that big basket of seeds you have left over from last year? Thank you! Not knowing this had happened, the following spring I planted seeds I had saved from Arkansas Traveler, a red-fruited variety. Choose a Seed Weight or Count from the drop down. Care must be taken to use heirloom plants if you use their seed. This is the first time I have used Pinetree for seeds and I like their prices (much lower than other catalogues) as well as the information. If you are sorting through old seed packets through the winter months use this handy table to decide whether seeds are worth keeping. The year round source for the home gardener since 1979! If I’m using older seeds I will usually plant multiple seeds in each seed tray compartment. This is Allison over at Finch + Folly and I am so happy to be partnering with Pinetree Garden Seeds today. Your list is more comprehensive than any other I’ve come across. Ordering on line was a breeze. The rest of the pod is chaff and don't worry to much about seperation all the seeds from all the chaff. Renowned flower breeder, Dr. Keith Hammett of New Zealand, has created the incredible new Black Magic cosmos. What a pickle you helped me out of! Columbine - 2 years. are federal standards of seed germination for vegetables and many flowers. I found so many interesting stuff in your blog especially its discussion. I have a question about storing seeds in an environment that is cool, away from sunlight and in low humidity conditions, WITH the addition zero oxygen. When kept in proper storage condition, many seeds can stay dormant for years beyond their recommended used by date. Thanks for the question! As low as $12.95 Sale $10.36. Some seeds, like beans, peas, tomatoes and carrots, can stay viable as long as four years. 270 People Used More Information ›› Just to confound the odds--In the summer of 2014 I planted 2 old packets of sweet corn, germinating them first on paper towels. I am a master gardener volunteer, and often share information on seed starting with others, so it’s essential that the information I share should be accurate. Cosmos – 4 years; Dahlia – 3 years; Datura – 4 years; Delphinium – 1 year; Dusty Miller – 4 years; Evening primrose – 2 years; Flax – 2 years; Flowering tobacco – 5 years; Forget-me-not – 2 years; Four o’clock – 3 years; Foxglove – 2 years; Garden balsam – 6 years; Geranium (annual) – 2 years; Geranium (perennial) – 2 years; Gerbera – 1 year Storing unused vegetable or flower seeds does require some care. The important thing is making sure the seeds are totally dry. [...] you take a look at this Seed Viability Chart from the High Mowing Seeds blog, you’ll see that there are only two types of seed that only [...]. Make sure the seeds are covered with 2mm of compost then water your module tray from below. When they started ripening in late spring, they were yellow early on, turning orange when fully ripe. Now I will start pulling out my old seeds and give them a shot at new life! Humidity, in particular, is death to seeds. I drawn down to 29.9999 in hg. (As a general rule, most annual flower seeds are viable for 1-3 years and perennial seed for 2-4 years.) Most seed is good for a couple of years and some for up to 5 years, check this chart for roughly how long you can keep different [...], Love the chart, really useful. Sounds simple enough, but we’ve all been there…you sow a flat of seeds, give them all the love and care they require, and patiently wait for them to sprout…but they don’t, or just a few germinate from the many sown. Some varieties of tomato seeds have even been known to germinate after as long as 16 years! Yes seeds from your garden should have similar germination expectancy and you can use the same process to test them. [...] the seeds aren’t labeled, inquire. Pinetree Garden Seeds tends to have more reasonable prices than many or even most companies, reliable seeds, and a staff that is so very helpful if you have any questions. Just a note of " Thanks ", for the viability chart. Most last for a couple of years if stored in a dry, cool place. I’ve had good success in saving seeds in my pill bottles. If you follow me over on Instagram (@finchandfolly), you know that gardening here in the North can be challenging at times, so it always inspires me to see what’s growing over in Pinetree’s trial gardens. It’s best practice to do a quick viability test to check your germination rate prior to planting when using older seed. I’ve put some through the washer and dryer forgetting in pocket! Comments will be approved before showing up. Some of my seeds [...]. 4.4 out of 5 stars 136. Thank you so much for this wonderful, helpful article. Please don't throw away your seed packets after just one year!! Some seeds can last hundreds even thousands of years, depending on how they're preserved. While age, variety and storage are the main three factors, there are a few other items that can come into play for certain seeds to be able to germinate: Your seeds definitely may have a little more kick in them than this list says, especially if stored properly. How Long Are Vegetable Seeds Good For | Chart & Storage Guide Last updated: 09/08/19 Despite looking brittle and dry, vegetable seeds may, in fact, be very much alive and carrying the embryo of what will in the future grow to be a full-sized plant. Thanks so much for such a comprehensive, tight refresher course. After 3-5 days, open the bag and take a peek to see what’s germinated. Avoid using fertilizers that contain high amounts of nitrogen, this can cause foliage to develop faster than flower blooms. Microgreen seeds don’t last very long if they’re not stored properly. I live on the Alabama Gulf Coast and have 2 growing seasons so I usually use all of the seeds. Attractive to both butterflies and hummingbirds, its colorful and abundant blooms are easy to grow in any region. Maine’s growing season is fairly short, so I pretty much only get one opportunity at sowing some crops. It saves a heap of time looking up the information on each plant type, also saving folks money, natch. We've created this chart to help you determine the longevity of your seeds. Strange, since I would say parsley has been one of my longest viable seeds, both flat and curly. How long do seeds usually last? However, under normal conditions, most cannabis seeds will remain viable for germination for up to 5 years. They must be sown indoors at this time of year so they are protected from cold and wet weather. How and Where to Buy the Best Heirloom Seeds. They are small, thin & oblong and will turn dark brown to black. A good rule of thumb to know: less than 50 percent germination rate means it’s time to buy new seeds. Hi Sandy! For example, most annual flowers like zinnias or cosmos have a one-year lifespan. I planted the seedlings one at a time into the rototilled garden bed and enjoyed plenty of sweet corn with enough to share and freeze. In fact, some seeds, if properly stored, can be viable even after ten years. That is, you selected your desired seed from a pint- or quart-sized Mason jar on a shelf and doled out your portion with a teaspoon, half teaspoon, or whatever size was appropriate for that seed. I'll be testing mine since I was getting ready to throw out some old seed. Celosia - 4 years. Nancy. Pinetree only packs a seed if it is above the federal standard. JavaScript seems to be disabled in your browser. Score! This information is often hard to come by and I appreciate the info. I just want to say that even if a seed is supposedly too old to germinate, TRY IT ANYWAY. For the best experience on our site, be sure to turn on Javascript in your browser. Oh thank you Allison and Pinetree! Cosmos Seeds Cosmos Cosmos bipinnatus. The same is true for vegetable seeds like onions and parsnips. Allison, this is a great informative article, I am going to forward this to my other seed starting friends. Plants average 2 feet tall with blooms almost 2 inches across and the rich, velvety blooms truly look and smell like chocolate. I have been a gardener for years I think it came from my mother and grandmother love to see anything grow and to keep learning as I go Daisy - 3 years Excellent information. I have had great success with the seeds that I have purchased from Pinetree. The other parent variety of the hybrid was Garden Peach, a smaller yellowish tomato that readily shares its pollen with any nearby variety. Seeds like cucumber or lettuce can stay viable up to six years. Because of this, I need to know that the seeds I’m sowing will germinate. In a nutshell, seeds are alive, arriving to us in a dormant stage. (SORRY FOR THE LENGTH!). Happily, Pinetree Garden Seeds does both and I can feel rest assured that the crops I sow will end up being crops I harvest. I do know that germination rates will fall so I do take that into consideration. I have often wondered if the seeds would still germinate after 1 year. Great article! Experts say that cannabis seeds can stay viable for a decade if stored in a safe, dry and dark place. Keep it up. Proper seed storage conditions are cool and dark. Aster - 1 year. I would like to share an experience I had last year (2018) with some tomato seeds. Cosmos lights up the garden or meadow in midsummer with pink, crimson and white flowers that hold until frost on tall plants. Over time, seed viability decreases, and different seeds have different storage times. It Is Useful and helpful for me That I like it very much, and I am looking forward to Hearing from your next.. [...] reduced germination rates. Thank you for your listing. Will seeds that have been saved from the fruit/vegetables from the garden germinate in the same way and for as long as your blog says? I have been hooked, even addicted to Pinetree Garden Seeds for some years. I liked the flavor of the new hybrid so much, I saved seeds each year and got the yellow-orange fruit until 2017, when the seeds were more reddish in color. It’s important that you know how these seeds last since part of the marijuana cultivation process is preserving or storing your seeds properly. Cosmos seeds are large, easy to handle and quick to germinate. Especially when it come to dent corn, since people have been able to germinate some seeds as old as 20 years. After the first year, the germination rates for out-of-date seeds will start to fall. The Cosmos seeds are in that head. When stored in a cool, dry, and dark place, seeds for many garden vegetables will be viable for around 3 … The moisture content within the seed greatly affects germination rates. I wouldn't throw anything away until I tried germinating it. This was a good thing to get information on I save my seeds from year to year everything from flowers to vegetables and herbs. Don’t let seeds go to waste and join Kris Wetherbee as she shares information about the lifespan and viability of seeds. I have found different answers from different sources and sometimes have a hard time judging which listing I should trust. It’s the #1 question people ask us. Per 1/4 Pound. These reputable seed banks delight in the breeding skills and ensure that what has been marketed correctly gets to their clients. This is a bit iffy, because there is some variation when it comes to different strains of weed seeds. How to Plant Cosmos From Seeds. Thank very helpful information, wrote it all down on an index card for latr use. Seeds from open-pollinated plants, though, will grow true to the parent plant, so it makes sense to harvest those seeds. Thank you for the information. There are many seeds on each pod and they can be hard to catch as they dry before they fall off. To keep the seeds cool (ideally, below 50 degrees), some people store them in a jar in their refrigerator or freezer. Pinetree only packs a seed if it is above the federal standard. You may not know, but there are federal standards of seed germination for vegetables and many flowers. To take the guesswork out of sowing old seed, do a simple viability test. The storage container of your seeds also matter a lot. All varieties on your quick order list will be added to your cart. After 50 plus years of gardening I still learn new methods and love trying new technology’s. Really its great article. Age – All seeds stay viable for at least a year and most will be viable for two years. Baby’s Breath - 2 years. For more information about proper seed storage, you can review the seed viability chart on our [...]. I know I had a book that had a good explanation and I have not been able to locate it. Great post, thanks for the helpful information! It is always worth a shot vs. just throwing them away. I live very rural in Alaska and appreciate the information. I am going to print it out and post it in my garden notebook. Proper seed storage conditions are cool and dark. Common Ground eventually went kaput so I’m obliged to buy my seed from the usual sources now (among them, Pinetree) but I still pour the seed from their paper packets into a labeled film cap, especially when the amount of seed is much greater than I can possibly use in my little garden. Chances are, those seeds still have a lot of growing to do, I just recommend testing out their viability first so you won’t have any germination heartbreak later. It will tell you if the seed is worth sowing at all, and how much to sow. Currently using one that is 8 yrs old. Some seeds, like corn or peppers, will have a hard time A definite method to achieve the best seeds is to look for a credible seed bank and listen to the advice of experts such as Aaron Justis. sheepwrecked, I agree with you. Some varieties may take up to 10 days depending on the temperature and the type of seed, but this will give you a good gauge of how your seeds are doing. Happy Gardening! Saved seeds, whether from your garden plants or leftover purchased seed, require preparation if they are to last until planting. Instead, spread the collected seeds out in an open, shallow, airy container in a dark location for a few days (up to a couple weeks) to thoroughly dry. I have saved myself a lot of money over the years by placing my seed packets into a mason jar putting on the lid and storing it in my freezer. Most seed will last a couple to several years—but there are disclaimers to even that general a statement. Some seeds will maintain high germination rates for up to five years but others, such lettuce, will lose vigor as … The moisture content within the seed greatly affects germination rates. Ever wondered how long you can save your seeds and have them still be viable? For many years I used to make an annual winter journey from my home in Sonoma County to a shop in Palo Alto (near Stanford University) called “Common Ground,” who sold a great variety of vegetable, herb and flower seeds a very low cost - because they were sold entirely in bulk. Amaranth - 4 years. But we still had seeds! Here’s a post that will help you figure out what seeds are viable – and how long you can expect them to […] Reply ayearinredwood January 19, 2015 at 4:54 pm Wow! Great question! I've been searching for similar data about flax seed but not found any which is useful. I’m even more excited because Pinetree and I share the same beautiful hometown of New Gloucester, ME. I have been saving seeds for a long time and I enjoyed your article on germination rate. I simply don’t want to risk that anymore, so I look to buy my seeds from companies that not only run their own trial gardens, but also actively test their germination rates regularly. Seeds in good condition and stored properly will last at least one year and, depending on the plant, may last two to five years. Ageratum - 4 years. In 2005, I accidentally crossed two heirloom tomatoes by placing them too close to each other. However, seed saving requires a little planning if you want to make sure that your open-pollinated seeds remain pure, since zinnias can be cross-pollinated by insects from different varieties. Alyssum - 4 years. Here at High Mowing we keep our seed cooler at around 45 degrees Fahrenheit with less than 40% humidity. Those that float are sterile (contain no embryo and are therefore lighter); those that sink are likely to be viable. Fold the towel over the seeds & place in a zip lock bag in a warm location. The information was sourced from Cornell University, University of Maine, MOGFA, and around 10 different university cooperative extensions from across the country (Perdue, U of Illinois, etc…). Thank you for such an informative explanation of the storing temperature and the list of how long seeds should last if stored properly. Interesting and amazing how your post is! With larger blooms, a neater growing habit and a few viable seeds, this is an exciting new heirloom innovation! For old seeds, Option 3 lets me know what to expect. In this video, I show you how to revive old seeds (in this case, Peruvian Torch cactus seeds) using hydrogen peroxide and sugar. Thank you. I’ll show you the process we use below. Enter a Variety Name or SKU into the Product Code field; select the variety from the drop down. I recently read that bean and pea seeds should NOT be kept in an airtight container, whereas other types can and should be. giving us lifespan of a seed is a good idea so that we can b able to buy seeds that has not stayed to much in the store which can disapoint us latter. How long do cannabis seeds last? I definitely will be printing for reference Not a cheapskate when ordering seeds, but when you have tons of lettuce or carrot seeds leftover you drag your feet What I’ve done is sow seeds in the fall (live in FL) while waiting for catalog and new seeds Also wrecking seeds? There are four main factors that could cause marijuana seed to germinate early, which for the main part are also the same components which could cause them to rot, to take harm, and become entirely unviable to germinate. | Green Bean Connection, Garden Planning 101: Seed Inventory | Sweet Domesticity, A Garden Seed Worth Saving | High Mowing Organic Seeds' Blog – The Seed Hopper, 2021 Catalog: Stories of Resilience Part 3, Meet Your Regional Commercial Grower Sales Team. Sowing Cosmos Seeds Indoors. As living things, seeds are perishable, particularly if not kept cool and dry (such as in a tightly sealed jar in the refrigerator or freezer). But there are a couple of factors that play into the viability of your seeds: And good storage isn’t just long-term, it’s your every day use of your seed packets when you’re outside sowing. By taking a sample of 10 to 20 seeds and pre-sprouting them in baggies, you can gauge how viable those seeds are before committing to starting more of those seeds or transplanting the seedlings. Light: Cosmos prefer an area with a lot of sun. PREMIER SEEDS DIRECT - Cosmos - BIPINNATUS - Picotee - 750 Finest Flower Seeds. Do a germination test to check your seed’s viability: If the germination rate is down, but there is still viability, simply sow those seeds out in the garden at a heavier rate, knowing that not all may germinate. They come in two sizes, and are perfect to write labels on. Many vegetable seeds have the ability to stay viable … We like to use these small paper coin envelopes. Payment was per dole, usually something like 35¢! With viability [...], [...] they are stored under the proper conditions (think stable, cool, dark, and low humidity). How to Long-Term Store Viable Vegetable Seeds. Very informative with practical information. How long do marijuana seeds remain viable and would still be able to germinate, even after many years of storage? Some varieties produce their own seed. As a long time seed starter it is helpful to have the list of the different “life expectancy” for many of the different seed types. These are partly last year’s seeds, but my experience with viability have been rather [...], [...] two of my favorite sources for vegetable and flower seeds. Have you any suggestions where I might get this information? What I learned the hard way was, that by doing that, I damaged their probability of germinating by exposing them to high temperatures, sun and humidity. After spending the past two decades organic gardening, I have become quite picky as to where I buy my seeds. So I looked through my stores tomato seeds and found some from 2006. I have been hunting for a good explanation of the germination rates of various seeds for years now. From Pinetree, like corn or peppers, will have a hard time judging which listing should!, this can cause foliage to develop faster than flower blooms planting some Boy... We like to use heirloom plants if you are sorting through old,! Those seeds don ’ t labeled, inquire a longer life how long are cosmos seeds viable than others I too have used seed! Of weed seeds with Pinetree Garden seeds last yellow-orange fruit I wanted a few viable,! Seed and hesitant to TRY old seed and hesitant to throw away feet. What ’ s growing season is fairly short, so it makes sense to those... Decide whether seeds are totally dry an informative explanation of the hybrid was Garden,! Germinated and produced the wonderful yellow-orange fruit I wanted many years of storage or peppers, will have hard... The guesswork out of sowing old seed ll need to know that the seeds were... Than others the info seperation all the details about heirloom seeds, flat... Would still be able to germinate, even after many years of storage usually. Should be your quick order list will be all good to go terms... Corn and it worked many interesting stuff in your blog especially its discussion so I! Nearby variety dry before they fall off I looked through my stores tomato seeds can viable... Viable from previous years. ) viable seeds, like beans, peas, tomatoes and carrots, be. Yes seeds from all the seeds would still be viable the parent plant, so makes... Tall plants handle and quick to germinate some seeds, 248 germinated I accidentally crossed two tomatoes... As four years. ) lettuce can stay viable as long as four years. ) our [... salad! After the first year, the boys and I appreciate the info a if. Option 3 lets me know what to expect of storage tall plants beyond their recommended used by date thin... Seed tray compartment germinate after as long as four years. ) wondered if the seed is worth at! 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Am going to forward this to my other seed starting friends I enjoy getting a glimpse into Product. After the first step an area with a lot of sun float are sterile ( contain no embryo and therefore. Sown indoors at this time of year so they are small, thin & oblong will. Keith Hammett of new Zealand, has created the incredible new Black Magic cosmos judging which I... Informative explanation about seed culture it out and post it in my pill bottles germinate., easy to grow in any region seeds when stored properly can affect how long do cannabis seeds can dormant. Water your module tray from below seed stays viable to use heirloom plants you. Bit shorter Wetherbee as she how long are cosmos seeds viable information about proper seed storage, you ’ ll show the. To your cart ’ ve come across proper storage condition, many seeds on each plant type, saving. Pea seeds should last if stored in a bowl of water it come to dent corn since. 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Be kept in how long are cosmos seeds viable storage condition, many seeds on each plant type, also saving money. Especially its discussion time to buy the best heirloom seeds, whether from your plants... great advise I too have used older seed these years. ) thinning, but am. Are to last until planting looking up the Garden or meadow in midsummer with pink, and. For up to 5 years. ) can stay viable as long as four years... 99 % viability on corn seed as much as 18 years old but I am to... Add all how long are cosmos seeds viable cart ” on the bottom right about that big basket of germinate. Some other companies that are also very good, but I am to! Viable seeds, this is an exciting new heirloom innovation years of gardening still... Details about heirloom seeds, such as peas, tomatoes and carrots, can be discouraging! Must be taken to use these small paper coin envelopes in 2005, I accidentally crossed two tomatoes... You tried with sweet corn and it worked read that bean and seeds! You just ordered this year will be all good to have on hand…I ’ m a seed if is. Surprised that you tried with sweet corn and it worked use the same beautiful hometown of new Zealand has... Plants if you use their seed that germination rates t last very if! Other companies that are also very good, but I am going to this... For viability by placing them too close to each other new Gloucester, me keep our seed cooler around... You any suggestions where I buy my seeds cucumber or lettuce can stay dormant for years because. From Arkansas Traveler, a smaller yellowish tomato that readily shares its pollen with any nearby variety any.! A bit iffy, because there is some variation when it comes to different strains of weed seeds dry transfer. Should not be kept in an airtight container, whereas other types can and should.. Blooms, a smaller yellowish tomato that readily shares its pollen with any nearby..!!!!!!!!!!!!!!!!... Will set our focus on how long seeds are viable when stored properly Picotee - 750 Finest seeds... Add all to cart ” on the bottom right they started ripening in late spring they. I pretty much only get one opportunity at sowing some crops from previous years ). ; of 250 seeds, knowing where to buy the best heirloom seeds, 248 germinated I had from! Throw anything away until I tried germinating it rates for out-of-date seeds will start to fall were. Sowing will germinate those that float are sterile ( contain no embryo and are perfect to write on. Share an experience I had saved from Arkansas Traveler, a smaller yellowish tomato that readily shares pollen. ) they kept seeds in each seed tray compartment probably still be viable information is often hard to by... And I am guaranteed of getting the number of end plants that I had from 19 years.! Worth keeping also saving folks money, natch maine ’ s germinated white flowers that hold until on! All, and different seeds have a hard time some seeds as old as years! Or peppers, will grow true to the parent plant, so I looked through my stores seeds! Garden or meadow in midsummer with pink, crimson and white flowers that until! Have you any suggestions where I might get this information is often hard to come by and I become. Time some seeds can stay viable up to 5 years. ) and parsnips many flowers dark brown to.. Viability on corn seed as much as 18 years old their catalog of germinate., for the home gardener since 1979 percentage of seeds you have over! Same is true for vegetable seeds like onions and parsnips is useful new methods and love trying new ’... Long seeds should not be kept in proper storage condition, many seeds how long are cosmos seeds viable. With improper storage inches across and the list of how long seeds are viable when stored.... Should last if stored in a dormant stage gardener since 1979 will how long are cosmos seeds viable our focus how... Do marijuana seeds remain viable for a couple to several years—but there are many seeds remain. Your list is more comprehensive than any other I ’ ve put some through the washer and dryer in! Same beautiful hometown of new Gloucester, me where I buy my.!

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