> During their excavations, the scientists also found several artifacts, including charcoal and fragments of broken ceramics. These discoveries suggest that the area’s Indigenous farmers may have dumped their household waste and the remnants of fires onto their fields, using them as compost. Samples taken from the mounds suggest the farmers enriched the dirt with soil from nearby wetlands.
No doubt this practice was used widely across the Americas. The natives were tremendously skilled with plants. This is another step to uncovering some of the knowledge lost. I hope they can find more of these same features.
Pottery of the time was low-fired and did not generally reach vitrification, and it was not glazed with a silica-based glaze that would seal it.
So over time this pottery would absorb water. And especially low-fired bits could totally break down.
Source: amateur ceramicist, and I have first-hand experience with cone 6 clay (vitrifies at 1200c) bisc-fired to cone 04 (1060c) and crumbling to bits when left in water too long.
to add some context, in modern gardening things like crushed vermiculite are a common soil amendment. being a porous absorbent mineral, it serves the same purpose.
Not to mention terracotta is a very common material for potted houseplants and container gardening. Terracotta is low-fired, non-vitreous and porous to water, giving it nice breathability and water absorption characteristics.
There are also long-necked terracotta bottles (called ollas) you can buy (or DIY) which you bury in the ground. You fill the bottle with water and the terracotta itself acts as a wick, providing a slow release continuous underground water source for plants to access.
I have some reproduction native American pottery from the upper great plains. They're pretty neat as they have round bottoms. Just holding it feels like given enough time it would break down and melt for sure. It feels very porous.
There’s a type of low fired clay used in bonsai soil and a harder one used in hydroponics. Good for retaining moisture and they don’t swell and shrink with water.
Primitive Technology on YouTube does this repeatedly.
You make a hole or find a piece of slate for processing, you mine clay from a stream bed, and then you make your first pot as a tool for moving water, the second pot for making food, and before or after the second pot you make clay bricks to build a kiln to high fire other things more efficiently - less fuel and more multitasking of other tasks.
If you try to make a planting bed in any settlement that’s more than say 100 years old on a site that was continuously lived on, you are guaranteed to come across at least some shards of glass, pots, plates, etc. Even if the spot was never explicitly a trash mound. Things break, people usually try to pick them up and put in trash, but (especially in grass) miss pieces. When kids break stuff you often don’t want them picking up sharp objects. Things get stepped on and pressed into soil. Many many reasons to find pottery shards where they seemingly don’t belong.
A lot of these observations about the miraculous soil caretaking of the elder Native Americans are in all likelihood just "Look at this garbage dump, so fertile, such agricultural skill!"
Broken half-fired terra cotta is effectively unusable rock. Terra cotta is semi-disposable, so lots of potsherds are produced per person-year before plastics/glasses/metals are introduced. It's the single most common and best-preserved archeological artifact. Broken pottery was used in place of sand to stabilize the clay in new pottery, but other than that it doesn't have many special qualities.
If you added the pottery fragments to the compost pile they would be “baked” again, albeit in a very different environment, and the finished product would have structural diversity closer to soil. Normally that would be rocks, but if your goal is to grow food clay rocks might be better for many reasons.
You're all overthinking it. They dumped their kitchen waste in the fields, and it happened to contain broken pottery too. It's the same for other archeological sites all over, many are waste dumps that contain interesting objects.
Does this matter? That is extremely difficult to differentiate via the archaeological record, so most archaeological research simply abandons the distinction. You should essentially never read intention into archaeology unless someone makes an extremely strong case the alternatives might be firmly excluded. As an example for a strong case of intention: if you find twenty skulls with pickaxes in their heads lined up on a shelf in an underground cubicular room, you should probably not assume this is a coincidence.
If you're reading about the use of pottery in soil, it does not matter what the people intended—at least, not as a primary concern. It is easy to read intention into headlines though.
Until further evidence is found it’s premature to say that there is no doubt that it was widely used in the Americas. I think there is doubt though that could be removed with more evidence.
FWIU in Grand Traverse Bay, Lake Michigan, there's a 9,000 year old stonehenge-like structure 40 feet underwater; that's 4000 thousand years older than Stonehenge and about 6000 years older than the Osireoin and the Pyramids.
The unanswered questions are intriguing. I wonder if the crops grew better because they were suited to the climate, but those crops aren’t around anymore? Could they have cultivated varieties of corn over say 1000 years that grew well at that latitude and in the relative cold? Or could there have been warmer micro climates?
Maybe not. Even corn specifically developed for my area in British Columbia needs a very warm summer to do well.
I wonder if it’s possible that they used corn less as a food crop and more as a scaffolding crop in the 3 sisters system.
You'd be surprised but the "landraces" e.g. historic geographically constrained cultivars tend to do better than modern cultivars in certain geographical regions. A modern even GMO cultivar might have a couple of beneficial traits introduced over the course of a few decades of work. Whereas a landrace might have been selected for yield in that area for a thousand years or more, maybe 100x or more as many generations under selection. As such there is a huge interest among a subset of biologists today to catalog all of these remaining landrace crops and the genetic diversity they contain before they are lost, either due to changing climate wiping out their native environment or the modern farmer replacing these cultivars with ones you can buy in bulk quantities from your seed supplier and have more of an export market (some landrace crops aren't fit for export shipping due to fragility of the crop unlike more modern cultivars; bananas are a good example where there are 1000 types grown but only 1 single varietal particularly fit for overseas shipping hits the supermarket).
It doesn't take many generations for selective breeding to show improvements in landraces. Even just making sure that volunteers from seeds that were thrown out as food waste were given a chance to fruit and seed starts that process.
One of the more interesting sources of landraces can be found in local seed saving programs, such as ones hosted by local libraries. They are more likely to be viable seeds that is adapting to the local conditions.
Corn is grown in the UP with current varieties currently. It’s not commercially viable because the yields are too low to compete with southern mega yield growers in a highly connected market with efficient transportation systems. There isn’t anything fundamentally hard about growing lower yield corn crops at that location though.
It didn’t necessarily need to be highly productive, just more productive than cultivating local stuff, and even if the corn was not necessarily at its most productive it might have been worth it (and with no real replacement) as part of the companion garden, getting just a few ears of corn would still have been worth more than unproductive wooden stakes.
Or, they had far advanced knowledge of working and remediating soil to grow food. Peat mosses, charcoal, household compost, are all valid soil additives that we now have scientific knowledge to explain how those benefit soil, but they were practicing it in soil that is otherwise unproductive. Given that no one else farmed it in that time it seems that knowledge was lost, but lines up with regenerative agriculture practices we see today.
There are several indicators in the south american jungles of civilisation going through booms and busts. If they would have been significant ahead, they would have colonized europe or china.
I think they were just engaging in time-honored speculation about how different history could’ve been had a few historical accidents changed. For example, the Mayan civilization collapsed about 500 years before the Spanish showed up due to the worst drought in something like 7k years, so people have speculated about what Mesoamerica might have looked like when contact was made of those millions of people hadn’t died. Repeat for having draft animals, not losing the immune system lottery so badly, etc. Given their martial traditions it’s very plausible that in slightly different scenarios the arriving Conquistadors would’ve been killed or captured and lead to return expeditions.
The "immune system lottery" is really why the native Americans were doomed.
They could have caught up with the technology etc and stood their ground. But when 90% of the population dies at or before first contact, the remaining 10% doesn't have a chance.
Pretty sure this would have beaten the Mayas even if they were at the top of their game.
It's pretty wild how world history turned on such a random and completely unknown factor.
According to graphs I’m seeing, it looks like it was warmer for a period, but then cooler until now. They would have been farming here during a cool period. It’s entirely possible that they established the farm thousands of years ago when it was warm (and warm means about the same temperatures as today), then kept farming throughout the ‘little ice age’ despite crops yielding less. Perhaps that’s what triggered such a huge expansion of the farm land. Or, perhaps there were far more people there than we think. Lots of questions
What graphs are you seeing? This is what the article says:
> Radiocarbon dating suggests the ridges [farming furrows or similar] were initially constructed roughly 1,000 years ago. They were maintained and used for 600 years after that.
Wikipedia says this:
> Erik Thorvaldsson (c. 950 – c. 1003), known as Erik the Red, was a Norse explorer [...]
> Around the year of 982, Erik was exiled from Iceland for three years, during which time he explored Greenland, eventually culminating in his founding of the first successful European settlement on the island. Erik would later die there around 1003 CE
["Erik the Red"]
And this:
> The Little Ice Age (LIA) was a period of regional cooling, particularly pronounced in the North Atlantic region.
> The period has been conventionally defined as extending from the 16th to the 19th centuries
> The NASA Earth Observatory notes three particularly cold intervals. One began about 1650, another about 1770, and the last in 1850
["Little Ice Age"]
And this:
> The Medieval Warm Period (MWP), also known as the Medieval Climate Optimum or the Medieval Climatic Anomaly, was a time of warm climate in the North Atlantic region that lasted from about 950 CE to about 1250 CE.
["Medieval Warm Period"]
The article would appear to suggest that the farm was established near the beginning of the Medieval Warm Period and abandoned near the beginning of the Little Ice Age... which seems incredibly unsurprising.
> They would have been farming here during a cool period.
Why do you ask? I'm not familiar with any such theory. Krakatoa erupted in... 1883, which doesn't seem like a good match. And volcanic winters don't seem to last much more than 10 years.
There is a theory that the Little Ice Age was precipitated by the reforestation of land in America as the natives died off from exposure to European diseases. And of course, there's always the theory that it's just something that happened.
A thousand years ago doesn't seem that long. In Europe it's not so rare to find that the farm that your bus stop is named after, was continuously worked for 3000 years.
In the Middle East they probably think that's short too!
In England all the Roman artefacts from 1500 years ago are ruins, while many from only ~500 years later, like the Tower of London are well preserved. Just a few centuries or so of raiding and depredations seperate the two periods of English history.
In some cases Roman architecture was literally dismantled to make something new - the cathedral at St Albans is mostly made from stone taken from Roman buildings.
Things can easily endure that long if well protected, but it’s a long time if they are allowed to fall into ruin (or destroyed).
The article quotes a researcher: “Most field systems have been either lost or destroyed due to intensive land use across most of North America, through farming, including pastures and the cutting down of trees for urban development,”
These floors, and the ruins around them, whilst buried, don't always survive the last century or two of machine plowing, which goes deeper than the medieval animal-based plowing.
Imagine the archeological excitement by your bus stop if a preserved part of the farm from 1,000 years ago were discovered, barely disturbed, giving archeologists a snapshot of what daily life was like at the time.
You know also know the story of Pompeii, and how its ruins have helped understand the Roman era.
This story is likely somewhere in between those two. Unlike your bus stop farm there aren't written records from the 1,000 years ago, nor are there many other sites from which to draw comparable results.
Science Mag Podcast covered this as well... with Madeleine McLeester, assistant professor in the department of anthropology at Dartmouth College.
I thought interesting that they have yet to find the village that associates with the gardens.
https://www.science.org/content/podcast/farming-maize-ice-ag...
It’s amazing how smart our ancestors were and creative and observant based on amateur science and gardening skills. The amount of planning and organization this must have taken would require a large coordinated effort.
But a farmer is a professional scientist and a professional gardener. Living 1k years ago did not make them uninformed or unskilled at their profession. It's quite a modern bias to suggest this is amateur.
The article seems to assume that the same tribe lived in that place for a thousand years. The pre-Columbian histories I've seen had the tribes moving around, based on comparisons of DNA evidence.
Ah, found your issue. You are subscribed to the incorrect mainstream view that all native Americans nations were more or less exactly the same. You'd have as much success do this as you would learning about the Roman's by studying the tribal Germanic people.
What is farmed in this country is land compatible with american farming practices not fertile land. E.G. any mountainous farm region in the U.S. will see basically only farming on the valley bottoms. Whereas many civilizations in the past and present developed terrace farms to make use of the entire hilly region not just the convenient bottoms. It isn't really done in the U.S. due to the cost and the availability of vast quantities of flat farmable land well beyond market need.
I always thought large-scale farming like this only happened under big state systems. But it looks like these communities were able to build something pretty big without that kind of centralized power.
It’s also kind of amazing that the fields stayed preserved for a thousand years. Makes me wonder if we’re still underestimating how advanced some of these early farming cultures were.
A while back it dawned on me that we think the greatest past civilizations were all in Egypt, the Middle East, and Mesopotamia because those areas are deserts or semi-deserts. They built out of stone because they didn't have much wood, and their writings survived because they weren't destroyed by water.
There could have been very sophisticated societies, even large scale civilizations, in the past in places like North America that built mainly out of wood, clay, bone, and other readily available materials, and there'd be nothing left. Any writings would be gone too, since writings don't survive well in wet climates unless they are chiseled into very durable stone or vitrified pottery (and even then they can erode).
When foreign cultures were discovered by Europeans the default thinking was to assume they were savages without culture, complex society or technology. That has echoed throughout time and still affects our view of history today. The true savages were the Europeans that preferred to subjugate or kill any non-European population they encountered.
It is only recently that TV & films from the US stopped portraying the stereotypical American Indians as only vaguely more than natural fauna. Until recently US history hardly seems to acknowledge the existence of pre-Colombian towns and cities across the southern states, some with tens of thousands of inhabitants. It didn't fit the European settler narrative that they were taming the wild and when native Americans are mentioned it has been incredibly whitewashed and edited.
At the time when the fields in this article were being tilled, the Europeans were building castles, cathedrals, river spanning arched stone bridges, multi-masted sailing ships and trebuchets and massive siege engines using tools of iron and steel. People in middle east were already working with colored glass and people in China were already working with porcelain, gunpowder and early printing presses. A thousand years or more before that, the Greeks were already working with complex geared mechanisms and making things like the Antikythera mechanism and proto steam turbines. The people tilling these fields on the other hand were using relatively simple stone, bone and wooden tools, and hadn't even invented the wheel yet.
While I appreciate the point you're trying to make that native Americans weren't some kind of savages as they were all too frequently portrayed in the past, the notion that their level of technological or societal development was anywhere near that of Europe, the Middle East or China at the time does not reflect actual history. Relatively speaking, outside the empires of Meso-America most pre-contact American societies were substantially less complex that European societies, and from a purely technological perspective every single American society ever documented was vastly less technologically complex than European, Middle Eastern and East Asian societies. So from that lens its not unreasonable for the Europeans of the time to have perceived the native Americans as less socially and technologically advanced as they were, as that was simply the reality of world at the time.
Also, any historian with any knowledge of actual pre-contact North American societies can tell you they too were subjugating and killing any other populations they encountered just as much as the Europeans did when they arrived on the continent. The notion that native societies lived some kind of eco-friendly, conflict free lifestyle is just as egregious of whitewashing as any former settler narratives.
The native Americans of the pacific northwest practiced slavery and would murder them during potlatch ceremonies. When Europeans showed up in New Zealand the Maori were busy commenting genocide against the Moriori.
I'd be interested in an alternative world history where the first humans into North America had domesticated and saved the local horses that were kicking around, or the Vikings had left a bunch on their earlier expeditions. Alternatively where the Vikings had managed to give the locals small pox and other European diseases en-masse before leaving.
Note that this combination is a very synergistic combination of crops to grow together, and is millennia old.
"The Three Sisters planting method, commonly known as companion planting, entails growing corn, beans, and squash together in a mutually beneficial arrangement. It originated in North America around 3000 years ago.
...
Each plant brings unique advantages to the others; Corn serves as a trellis, providing a framework for the beans to grow and wrap around. Beans, acting as a natural fertilizer, add nitrogen to the soil, which benefits the growth of the corn and squash. Squash is typically planted between the corn and beans, and its ample leaves serve as a shield, blocking heat, retaining soil moisture and suppressing weed growth."
Was the article edited? I don't see a reference to the phrase "three sisters" on it, it just says "corn, beans, and squash." Did the original headline mention it?
Original HN title was "1k year old 3 sisters crop farm found in Northern Michigan"
I really wish that when titles were edited there was some history, it would make it much easier to understand these little discussions based on the original title.
My hunch (based on how my grandfather would cultivate) was to provide a mount of fertilizer for added nitrogen along with the added irrigation aspects.
It's surprising ("I'm shocked, shocked, well not that shocked") how this style of farming somehow made it all the way to my ancestral village for cultivating these New World crops.
Exciting - that sounds a lot like Terra preta: https://en.wikipedia.org/wiki/Terra_preta
No doubt this practice was used widely across the Americas. The natives were tremendously skilled with plants. This is another step to uncovering some of the knowledge lost. I hope they can find more of these same features.