Celebrating Seeds

I’ve been seeing a lot of brand new plants germinating from seeds during the last couple weeks. Looking at all those cotyledons (first leaves) poking out of the ground makes me reflect on the massive amount of good fortune it takes for any seed to actually turn into a new prairie plant.

Prairie dandelion seeds (Nothocalais cuspidata).

Seed production is a high risk, high reward strategy for plants, and even that’s a huge understatement. It takes a tremendous amount of energy for a plant to produce a flower – especially if you’re trying to make one that’s attractive to an animal pollinator. There’s all the colorful petals or other structures, nectar (in many cases), and, of course the pollen itself. After pollination, even more energy can go into loading up the developing seeds with the nutrition and energy needed to give the embedded embryo a chance of success.

Once the seeds are released from the plant, they often travel away from their parent – at least far enough that they aren’t trying to grow directly beneath them. The varied tactics used by plants to disperse their seeds is a huge, fascinating topic, which I’ve written about before. Regardless of whether a seed travels by wind, water, attached to the fur or feathers of an animal, or by being eaten and then pooped out, there are myriad dangers along the way.

Prairie violet (Viola pedatifida) seeds can travel in two ways. First, they are ballistically launched into the air as their pods dry and constrict. Second, many are picked up and carried home by ants because of the little fatty packet of nutrition (elaiosomes) violet seeds have attached to themselves for that very purpose.

Seeds packed with nutrients to feed their embryo are also a great food source for many other organisms. Countless vertebrate and invertebrate animals seek out and eat seeds, especially during the dormant season when most other food sources are scarce. Fungi and lots of microorganisms can also destroy and consume seeds.

Pasque flower (Pulsatilla patens)

If, by some minor miracle, a seed survives its short or long journey intact, it may still be a long way from ultimate success. For most plants, germination only happens if a seed is in good contact with soil. Think for a moment about the world a seed is launched into and how many obstacles there are between that seed and the soil!

When you walk through most prairies, if you look straight down, you’re not seeing a lot of bare soil. Instead, there are a lot of living and dead plant parts (leave, stems, etc.) between your feet and the ground. A recently-burned prairie, of course, has lots of bare ground. That’s a great opportunity, but only for any seeds who weren’t consumed by the fire itself.

Most seeds land on something besides soil. Often, that’s the end of their journey and they sit there until they die (e.g., the embryo runs out of stored food) or they’re found and consumed by another organism. If they’re lucky, they might get dislodged from their original landing spot by wind or rain, for example, and slip downward toward the soil.

Entire-leaf rosinweed seeds (Silphium integrifolium)

Let’s say a seed has led a lucky life and manages to reach soil. It might even get pushed into that soil slightly by rain or a passing animal’s foot. Hooray! Now it can grow and reward its parent’s huge investment.

Well, maybe.

Most seeds need water to germinate. During drought periods, a seed might sit in the dusty earth for weeks, months, or years, waiting for sufficient moisture to help break its seed coat open. As it sits there, it’s vulnerable to any passing animal, fungal hyphae, or tiny microorganism looking for a meal. Plus, as we discussed earlier, the embryo might simply run out of food.

Dotted gayfeather (Liatris punctata)

Even if rain or snow provides sufficient moisture for germination, some prairie seeds also need a certain amount of sunlight to trigger germination. (This is why it’s important not to plant prairie seeds like you plant pumpkin or green bean seeds. Just scattering them on top of the ground is often best.) If a seed that requires light lands on bare soil that happens to be in the shade of other plants, it might still be stuck in limbo.

Illinois bundleflower seeds have such a strong seed coat they can survive a trip through the digestive system of an animal. That’s great for the seed, but doesn’t provide any reward for the poor hungry animal!

As a result of all the challenges they face, only a tiny percentage of seeds released into the world by their parents actually end up germinating. Those that do have a chance to perpetuate the family line. However, simply reaching the germination stage isn’t the end of the race.

A tiny seedling still has to compete with any nearby plants for food, water, and sunlight. Only a small minority of prairie plant seedlings make it to maturity and create their own flowers and seeds. They either wither and die in the face of more competitive neighbors or get eaten by herbivores looking for fresh new growth to nibble on.

Tall thistle (Cirsium altissimum)
Sensitive briar (Mimosa quadrivalvus)
Ironweed (Vernonia baldwinii)

Despite the odds, of course, some seeds do manage to germinate and then become parents themselves. We’ve got abundant evidence of those successes all around us. It’s easy, though, to take those winners for granted. Spare a thought for all those who didn’t make it!I’m cheering on all the little germinating plants in the prairie right now. They’ve already survived a ton of obstacles, but they still have a lot to overcome.

I often wish seeds good luck when I see them, too (usually silently, especially if other people are around). While most seeds fail to become plants, each one of them plays a vital role in the prairie ecosystem. Animals and other organisms have to eat, after all, and seeds help keep lots of other community members alive.

Apart from everything else, seeds and the structures that help carry them into the world are simply beautiful. I’m incredibly appreciative of the diversity and aesthetic elegance of prairie seeds and I’ve spent a lot of joyful hours photographing them. I just try not to dwell too much on their individual survival chances…

Photos of the Week – March 25, 2025

Last week, a thundersnow storm dropped five inches of snow here in central Nebraska, and prolonged windy conditions knocked power out for much of our area. The weather seems to be fighting both itself and us.

Yesterday, though, was a very pleasant day. I took a midday break from work and made a quick stop at our family prairie to make sure everything was ok. It was. Since there were some diffuse clouds making good light for close-up photography, I wandered around a little to see if I could find any reason to exercise my macro lens. I quickly found a cute little millipede near a badger dig but it didn’t feel like sticking around for photos.

Midge on melting snow

Next, I wandered over the the melting remnants of a big snow drift. I laid down in the wet grass near the edge and perused the snow for any movement. There was more happening than you might expect.

Some of the last remnants of last week’s big storm.
Stiff goldenrod and melting snow.

First, I found a few sprigs of prairie plants sticking out of the snow and played with them. Once I was tuned in, though, I started seeing movement and found quite a few little insects. Twenty minutes later, with wet elbows and knees, I got up and headed back to work. Here are some of the insects I found on the snow:

A little frit fly
Another tiny fly
A delphacid planthopper
The same midge as seen above
Leafhopper
Beetle
Barklouse. I was proud of myself for recognizing this one!

Why were all these insects hanging out on the snow? The air temperature was in the mid-50’s (Fahrenheit), so it’s not surprising they were active, but why hang out on a big pile of ice crystals instead of somewhere warmer? Were they looking for something? Taking advantage of the sun exposure, even though it made their feet cold? I don’t know.

Even though they were all smaller than a grain of rice, the insects stood out because of their movement on a white background. That was convenient for me, of course, but also seems like a vulnerability to any predators hanging around. I don’t have to understand it, I can just be grateful to see all those little friends, and for the chance to start warming up for the coming field season full of insects and many other small wonders.

I haven’t seen any wildflowers yet, but we’re getting close to that time. Maybe just one or two more snowstorms first? Happy spring, everyone.