Seed germination issues happen every spring and challenge many new and experienced gardeners and growers. We cover the biggest hurdles and how to fix them.
Wendell Berry’s quotes have had a profound impact on me and what has become Terroir Seeds. I share thoughts on a few quotes on gardening and growing food.
Seed germination issues happen every spring and challenge many new and experienced gardeners and growers. Over the years we have found a lot of commonality in why our customers have problems with seed germination. The four biggest issues are soil temperature, moisture levels, knowledge or experience and patience. We’ve put this guide together to help everyone learn where the problems lie and make changes to become more successful.
We have a vested interest in you being successful both in starting seeds and in your gardening efforts. After all, we put our name and reputation on each and every one of the seed packets we send out. If you fail, we also fail; so we really want to help you succeed!
We know our seed quality and spend a lot of time, energy and effort to make sure you get the best possible seeds. When you have problems with seed germination, if we simply send you replacement seeds without helping to correct the issues, you will get the same results and no one will be happy! We aren’t asking these questions to make things difficult, but to help you. Also, if you learn some of these critical skills and steps, you will be much more successful overall.
Seeds are amazing; they have everything needed to continue their species stored right inside their seed coats. From their accumulated travels they have all the adaptations, the environmental and seasonal conditions they have encountered and grown through encoded into their DNA. Everything they need to sprout when the time is right is built right inside their shells. Within that hard seed coat is enough food energy to help them break dormancy and carry them into their first several days as seedlings. All the enzymes they need to convert the stored energy into food is there as well; they have the fats, carbohydrates, protein, enzymes and hormones needed to get the seed off to a great start. As home gardeners and small scale growers, our job is to provide the proper conditions, ensuring maximum germination into strong and healthy seedlings ready to be transplanted into the garden when the conditions are right.
Not all seeds are alike; likewise, many of them need somewhat different conditions to germinate. Some seeds are simply more difficult to germinate and require patience, attention to detail and time to be successful with. Pay attention to the seed packet directions – if it says, “Outdoor sowing recommended,” there is a reason! You will have a much harder time getting them to start inside, regardless of the professional greenhouse set-up you might have. Corn, melons and cucumbers are great examples.
Other seeds really need to be planted in the fall, lightly covered with soil and left alone – like most herbs and flowers. Duplicate the natural systems of seeds scattering in the fall and overwintering in the soil, then sprouting in the spring, and you will have less work and worry with a better, more vibrant garden.
Very few varieties of seed will have 100% germination. Under carefully controlled conditions, we might see 97% germination rate for tomatoes, but you might see 90% in your home. This doesn’t mean the seeds you get are weaker, just that your conditions are most likely different than what we used in our germination tests. We always beat the Federal Germination Standards!
This is why we pack more seeds in a packet for some varieties; it reflects the Federal germination rate. For instance, the standard germination rate for Okra is 50% – which is why we give you around 100 seeds – there is plenty of seed to ensure an abundant harvest. The minimum germination rate for peppers is 55% – we will stop selling it long before it drops to 70% in our tests. This is one of the reasons we pack 40 seeds per packet for peppers, as not all will germinate. We pack our seeds to give you the best germination rate possible, combined with our knowledge of how that variety grows to ensure a great crop in your garden; another reason to wonder what results you will get with 10 seeds per packet from other companies.
Now that we have some information, where do we start in evaluating why our seed germination failed? When seed germination doesn’t happen, there are a few things to consider.
Have none of the seeds germinated? If this is the case, there is one of two potential answers. The more likely answer is an environmental condition is preventing the seeds from sprouting. We will look at those below. The second cause is that the seeds are old, leftover from several years ago, forgotten in a box or cupboard or stored in extreme temperatures that have destroyed the seed germination potential. Extremes of heat can kill seeds in a short time, which is why we recommend storing them in a cool, temperature and moisture stable environment.
If only a few of the seeds germinate, it is most likely from being impatient or planting older seeds that have less viability. Most garden seeds have a high germination rate for the first 2 – 3 years, with the exception of hulless pumpkins, leeks and onions. Once the germination drops to about 75%, their ability to sprout will drop considerably faster. Of course, when you see the first few pepper seeds pop up in 3 – 4 days, then nothing for another day or so and you give up, you lose out on the rest of the seeds emerging at the end of the week! Have a bit of patience, observe the seeds progress each day and check our Germination Guide or the back of the seed packet to see how long they really should take. Many times a couple more days makes all the difference in germination rates.
Other conditions such as improper soil temperature and moisture, or a combination of the two, are the majority of the reasons that seeds don’t germinate in a timely manner. Planting too early, too deep, watering too much or too little are common mistakes made. Other factors include soil preparation, birds and/or rodents stealing the seeds.
If you are in doubt as to the viability of seeds, whether they are an unknown seed that was given or traded to you, or you’ve “discovered” them in a closet or back shelf, do a paper towel seed germination test.
Wet a paper towel and wring most of the moisture out of it. Fold it in half and then lay it open. Arrange the test seeds – usually 10 or so – along the fold, then re-fold the towel over the seeds. Roll the folded towel into a tube, then seal it into a zip-lock type of clear plastic bag. Put the bag of seeds in a constant, very warm temperature location – such as the top of a refrigerator, freezer or in the oven that has a pilot light. You need about 85 – 90°F. Record the date started and check the progress daily, opening the bag to check the moisture level. You should see water droplets on the inside of the bag, add a little more water when you don’t. Check the germination rate and amount of days needed against our Germination Guide. If the seeds germinate well, you can plant them directly by cutting them out of the paper towel, and then you know they are viable.
Let’s look at the major factors that a seed needs for germination. They are moisture, temperature, air, light and soil. For a more in-depth look at these factors, read our article “Starting Seeds at Home: A Deeper Look.”
Moisture – A dormant seed only contains about 10 – 15% moisture, so it must draw water from the soil that surrounds it. As the moisture is absorbed from the soil or seed starting media through the seed coat, enzymes are activated that convert the stored nutrition reserves and softens the seed shell, allowing oxygen to penetrate the seed coat, starting the process of growing. The moisture levels are critical at this early stage – they must remain constant for the sprouting process to continue and for the seedling to survive.
Uneven moisture levels can seriously delay sprouting of a seed, and even a few minutes lack of moisture as a seedling can kill it, as it has no method of storing water like a mature plant does. During the germination process, a seed needs much more moisture in the soil than when it has sprouted, so be aware and decrease the moisture levels as young seedlings emerge and mature.
Temperature – Germination will only occur in a specific range of maximum and minimum temperatures for each variety. Our Germination Guide lists these, along with the optimum temperature each one needs. The temperature we are talking about is the soil temperature, not the air temperature above the seed tray or garden row. Slightly cooler temperatures can double or triple the time needed for germination – even as little as 5°F cooler can be the difference between a 7 day or a 14 day seedling emergence!
When starting seeds inside, a bottom heat such as a seed sprouting heating mat on a thermostat is invaluable. In the garden, double check the soil temperature with a soil thermometer before spending the time and effort in carefully planting your seeds and being disappointed later.
Air – Seed germination requires large amounts of oxygen to activate the metabolic process of converting the stored nutrients into energy. Oxygen that is dissolved in water and from the air contained in the soil is used. If soil conditions are too wet, an anaerobic condition can be created and seeds may not be able to germinate due to lack of oxygen.
Light – Some seeds need light for germination, while some other seed varieties are hindered by light. Most wild species of flowers and herbs need darkness for germination and should be planted slightly deeper in the soil while most modern vegetable crops prefer light or are not affected by it, and are planted shallowly to allow small amounts of light to filter through the soil.
Soil – It is the medium for successful seed germination. In the germination tray, it may be absorbent paper (blotting paper, towel or tissue paper), soil, sand or a mixed media made specifically for seed germination. The substratum absorbs water and supplies it to the germinating seeds. It should be free from toxic substances and should not act as a medium for the growth of micro-organisms. It needs to be loose, allowing the moisture to easily reach the seed and for the seed to move as it grows without spending lots of energy in moving the soil to reach the surface.
1. Keep seed packets in a cool dry place. Do not store in your garage, potting shed or near a heat source such as a heater or appliance.
2. Review the seed packets individual instructions and develop a planting schedule based on your local weather and growing season.
3. Re-seal any seed packets that you are starting indoors, such as pepper, eggplant, and tomatoes. This will allow you to start more seeds later if you want to stagger your plantings, etc.
4. It may be better to over plant and then share plant starts with neighbor and friends, than to under plant and be caught short.
5. Download the Terroir Seeds Garden Journal to get a jump start on tracking your garden this year.
And finally, a few questions to answer to help us help you in determining what went wrong and how to correct it:
Did you follow the germination instructions on the seed packet? Go back and read them again; we sometime spend hours in researching and experimenting to find the best methods, temperatures, etc.
What was the soil temperature? Not the air temperature, but the soil temperature? Were there fluctuations? If so, how much? Not knowing this is a critical error that is a major cause of seed germination failure.
How moist/damp was the soil? For seed starting, the soil needs to be damp to the touch. You should be able to see a small pad of moisture on your fingertip after you lightly touch the soil. It shouldn’t be a drop of water, but an easily observed spot of dampness. Was it too dry/too wet? Did it get dry during the day/night, or was there constant moisture?
What seed starting mix are you using – a complete soil, Miracle-Gro mix. sterile seed starting mix, home-grown or something else?
Are the seeds still physically in the ground? If you don’t know, dig a few up to check. Are birds, squirrels, rodents eating/stealing the seeds or seedlings? Many times we have heard that our seeds aren’t germinating, when they have been eaten! You may need to use a paper cup with the bottom cut off to protect the seedling from birds/rodents until it is more mature.
Once you have answered these questions, we can help you determine what has prevented your seeds from germinating. More often than not you will know what to change just from reading this.
Let’s start this conversation off with one of Wendell Berry’s quotes that has had a profound impact on me and what has become Terroir Seeds:
“We are going to have to gather up the fragments of knowledge and responsibilities that have been turned over to governments, corporations, and specialists, and put those fragments back together again in our own minds and in our families and household and neighborhoods.”~ Wendell Berry
I heard or read the old phrase, “If you want to change the world, plant a garden,” when I was much younger. It didn’t make any sense to me at the time, as I strongly disliked being forced to work in our large garden when I had much better things to do with my free time!
I do remember the planting time during spring – readying the rows, digging the small irrigation ditches, making sure that the water would flow all the way to the end of the row. Then the planting of the seeds and transplanting seedlings into their places. We watered our 1/4 acre garden with a gas powered well pump from an old abandoned well that we had cleared up and found water in.
Neither of my parents came from farming or ranching backgrounds. My father wanted to grow our own food because of his concern about the health of grocery store produce in our small town and the proliferation of commercially prepared foods. This was the late 1970s and early 1980s. Most of the knowledge that we used came from our Mother Earth News subscription, along with the advice of a couple of older family friends. Looking back, I see that there was a distinct lack of knowledge and experience even then, but there was a desire to do something different. For all of his faults, my father had it right this time.
Ours was a typical “spring and summer” garden. We planted as soon as we could in the spring and then watered, weeded and waited until the garden came alive and threw way too much produce at us. Then it was cooking, canning and drying seemingly non-stop until the garden sputtered to a stop, usually after the first couple of hard frosts. After that we cleared the dead plants away and waited until the next spring to try again. I remember the dreaded summer break routine of hoeing and weeding after breakfast until it got hot, then again in the late afternoon into early evening. We were gardening in soil that had been fallow for decades, so the seed bank of weeds was tremendous. We didn’t really understand how to manage soil fertility, so we hoed and pulled weeds constantly.
After High School I joined the Navy and left the small town behind just as soon as possible. Six years later – after lots of travel, some growing up and the Gulf War, I left the Navy, the big cities and a failed marriage behind and made the conscious choice to move back to a small town. That was when those words about a garden began to make more sense. I began to realize the world-changing part wasn’t the garden or the food that it grew, not even the world that it was supposed to change. Obviously, one small garden can’t change or feed the world by itself.
I learned the magic of what one small garden can do is share.
It can share its food, the knowledge and experience of how that food was grown, why it tastes as wonderful, rich and delicious as it does and the excitement and contentment that only comes from food you’ve grown. The term “local food” metamorphoses into something entirely different, ceasing to be a carelessly used sound-bite and growing into many delicious food bites that nourish us – body and soul.
That one small garden becomes a few, then several, then many across a town, a city, a county and a nation. That small garden becomes a metaphor, an idea and a movement. That small humble garden becomes a much-needed, deep seated sense of security in a world where very little has the feel of permanence or security today, regardless of social status or financial standing. It gives us grounding and a sense of place, of belonging to and being part of something much bigger, older and better than us.
That small backyard home garden becomes the embodiment of how we as individuals can reclaim our decisions from the proxies of government, corporations and stockholders and make it a personal choice to grow our own food and share it with our family, friends and neighbors, improving everyone’s lives that we share. After all, we are only talking about the third most important ingredient for life, after air and water! Food, as with soil, has been denigrated and degraded into a commodity that is not worth our attention, respect and devotion. We are slowly waking up to this fallacy.
“Odd as I am sure it will appear to some, I can think of no better form of personal involvement in the cure of the environment than that of gardening. A person who is growing a garden, if he is growing it organically, is improving a piece of the world. He is producing something to eat, which makes him somewhat independent of the grocery business, but he is also enlarging, for himself, the meaning of food and the pleasure of eating.”~ Wendell Berry, The Art of the Commonplace: The Agrarian Essays
When we garden, we take an active part in the production of our food and quit passively waiting for it to be grown, processed and delivered to us on our whim. As Joel Salatin said in Folks, This Ain’t Normal, “The average person is still under the aberrant delusion that food should be somebody else’s responsibility until I’m ready to eat it.” Even the smallest container garden starts the reconnection process for that person. They learn and observe what it takes to grow even the smallest amount of food, whether it is a single plant of leaf lettuce or a handful of kitchen herbs. Through success and failure, they begin to realize that food doesn’t just pop into existence at the grocery store regardless of seasonality or weather conditions.
The very act of gardening on any scale forces us to pay attention to the world around us, to observe what is happening and learn more about the interconnected nature of all things. We become aware – perhaps for the very first time- of the enormous complexity of our world, and the realization of the folly of simplistic, reductionist, single solution thinking when applied to complex systems, even such a small one as a garden.
That awakening can be the most beautiful, wondrous experience or one of the most frightful of our lives, depending on how we react and adapt to change. For those who come to see the beauty in growing food, their lives will never be the same. They will acquire a quiet sense of accomplishment, of progress and resiliency that is almost impossible to describe or talk about, but is implicitly understood by another who has made the same journey, whether as a child in a farming or ranching family or one who has made the conscience decision to take the road less traveled.
Our tech driven, always on, instant gratification society is shown to be artificial when we learn that we absolutely cannot plant carrot seeds the day before we want to serve carrot salad to our dinner guests. Everything takes its own time and there are things in life that absolutely cannot be rushed, “right sized”, or optimized to serve our timeline and agenda. As advanced a society as we are today, with as much progress as we’ve made, we are still human beings in a world that is larger than us, that doesn’t march to our drumbeat.
When we begin to garden, we begin to heal our part of the world starting with our own space and lives. As we gain knowledge, experience and success we can start to apply those lessons learned in the garden to other areas of our lives and offer our hard-won experiences to others so that they can hopefully learn from our mistakes. We come to re-connect with the idea that we belong in the world and to the world; we are not separate from and should not be disconnected from it. The idea that human kind shouldn’t be in the wilderness or nature is fully revealed as folly as we learn that not only are we part of the world, we are inseparable from it, no matter how hard some of us try. Rachel Carson said it so well, “Man is a part of nature, and his war against nature is inevitably a war against himself.”
To look at it from a different angle, I leave you with this thought that brings us full circle to the beginning of our conversation:
“Until we understand what the land is, we are at odds with everything we touch. And to come to that understanding it is necessary, even now, to leave the regions of our conquest – the cleared fields, the towns and cities, the highways – and re-enter the woods. For only there can a man encounter the silence and the darkness of his own absence. Only in this silence and darkness can he recover the sense of the world’s longevity, of its ability to thrive without him, of his inferiority to it and his dependence on it. Perhaps then, having heard that silence and seen that darkness, he will grow humble before the place and begin to take it in – to learn from it what it is. As its sounds come into his hearing, and its lights and colors come into his vision, and its odors come into his nostrils, then he may come into its presence as he never has before, and he will arrive in his place and will want to remain. His life will grow out of the ground like the other lives of the place, and take its place among them. He will be with them – neither ignorant of them, nor indifferent to them, nor against them – and so at last he will grow to be native-born. That is, he must reenter the silence and the darkness, and be born again. ~Wendell Berry, The Art of the Commonplace: The Agrarian Essays
What Happened To My Seed Germination?
Seed germination issues happen every spring and challenge many new and experienced gardeners and growers. We cover the biggest hurdles and how to fix them.
Thoughts on Selected Wendell Berry Quotes
Wendell Berry’s quotes have had a profound impact on me and what has become Terroir Seeds. I share thoughts on a few quotes on gardening and growing food.