Twelve pastures cut like slices of a pie, with one round barn in the middle. The cows graze one slice at a time while the other eleven grow back.
Yes, if you keep three things in mind:
marks a picture made on a computer to show the idea. Every other photo is a real farm, credited under it. The numbers come from university farm guides, listed at the bottom. Check them against your own land.
Part 1 · What it looks like
Wherever the cows sleep has to fit the whole herd. Put a barn in every slice and you build twelve of them, and eleven sit empty at any time. One round barn in the middle, with a gate into each slice, does the same job with one roof.
Farmers have built it before. The Shakers' Round Stone Barn in Hancock, Massachusetts (1826) kept hay in the middle and the cows in a ring facing in, so one person could feed the whole herd from the center. The Grazing Wheel adds the twelve pastures outside the wall. Sources: Hancock Shaker Village, round barns.
Apples and pears are fine in small amounts. Cherry, plum, peach and apricot trees are not: their wilting leaves are poisonous to cattle, so keep them away from the fence. The rain basins sit inside the fences, where hooves can't break them down. Survey the slope before you dig, so every basin is level.
Part 2 · Running it
Rest is simple arithmetic: 11 × days in each pasture. The first idea was a month in each slice. That gives a long rest, but during a month the cattle keep coming back to bite the new shoots, which weakens the grass. Short stays work better, and the right rest changes with the season, as the next sheet shows.
About April to June
About July and August
About September to November
When nothing grows
A circle faces every direction, so it can be laid out for its own site. Put a thicker band of trees on the rim where the winter wind comes from: cattle start to need more feed below about 18°F, and in a University of Nebraska example a windbreak turns a −44°F wind chill into −15°F.
Put shade trees where the afternoon sun hits. From 70°F to 90°F, beef cattle drink 38% more water, and trees spread through the pasture shade them wherever they graze. G‑1 shows one example layout.
01 · Roof water
Gutters collect rain before it touches the cattle areas. Screen out debris, send the first dirty wash away, then store it in covered, dark, mosquito-proof tanks. Drip-water the orchard from the tank. Using it as drinking water for cattle needs suitable roofing, testing, treatment and a backup supply.
02 · Landscape water
Send extra tank water through protected outlets into the tree strips' basins, with safe spillways and a storm bypass. Slow it, spread it, let the soil take it in, and keep tree roots out of standing water.
03 · Cattle-area water
Runoff from lanes, feed aprons and compost pads never goes into the clean tank or onto the orchard. Grade and curb so clean rain stays out of dirty areas. Scrape manure into a contained compost or storage area.
How much can the roof catch?
Gallons = roof ft² × inches of rain ÷ 12 × 7.48 × efficiency (each inch on each square foot is about 0.62 gallons). That's what the roof catches, not tank size or safe drinking water. Tank size follows the longest dry spell, not the yearly total. See NRCS roof runoff guidance and keeping clean and dirty runoff apart.
Part 3 · Extra feed and helpers
Fallen fruit tops up the grass and hay. It can't replace them: the University of Florida's guide to feeding cull produce to cattle suggests keeping feeds like this to about 0.5% of body weight a day, measured as dry matter. The calculator works out the cap for your herd. The rest of the year, the trees give shade, shelter from wind and a fruit crop to sell.
Risk 1 · Choking
Apples are one of the firm foods the Merck Veterinary Manual names as common causes of choke in cattle, along with potatoes and beets. Windfalls in the pen carry the same risk as fruit tossed over the fence.
Risk 2 · Gorging
Cattle that eat a lot of fallen apples at once can get acidosis and bloat. In one Irish case, two cows died after the herd got into an old orchard, and windfall apples were the suspected cause. In heavy-drop weeks, move the herd past that pasture or pick up the windfalls and feed them in measured amounts.
Risk 3 · The wrong trees
They're all in the Prunus family. When their leaves wilt, after a storm breaks a branch, they release cyanide, and cattle are especially at risk: 1.2 to 4.8 lb of wilted black cherry leaves can kill a 1,200 lb cow. Penn State and Purdue also flag red maple (wilted leaves), black locust, buckeye, red oak and yew.
Risk 4 · Sprays
Some orchard sprays limit grazing for a set time after they're applied. Trees that drop fruit into a pasture are, in effect, part of the pasture, so spray choices and timing have to work for both.
A way to use the wheel for this: plan the rotation around the fruit. Graze the pastures beside a strip just before the main drop, keep the herd away while windfalls pile up, then collect them and feed them in measured amounts. Apples and pears with care, yes. Prunus, no.
Stagger the drop. If every tree ripens in the same few weeks, most of the windfalls are wasted or overeaten. Plant early, mid-season and late varieties, and give each tree strip a different mix, so the fruit comes down over more weeks and the herd stays closer to the cap. The months are an example; a local nursery knows your dates.
Hens · one pasture behind the herd
A coop on wheels parks at the inner end of the pasture the cows just left, inside electric poultry netting, and moves when they move. With a few days per pasture, the hens always arrive about 3 to 4 days after the cows, and no one has to keep track.
What holds up: eggs from land the cows already use, and poultry manure, which is rich in nitrogen and phosphorus. What isn't proven: fly control. In a controlled trial, chickens left with manure pats for 3 to 4 days didn't lower face fly survival and mostly stayed away from the pats, and the University of Vermont found that flies follow the herd. Farms that run hens behind cattle say they see fewer flies, so count it as a maybe.
Watch for: foxes, hawks and dogs. The hens still need feed.
Holds upeggs, fertility Not provenflies
Dung beetles and clover
Dung beetles bury manure and break up pats for free. Ivermectin-type wormers pass into the manure and are very toxic to them, and pour-ons hit their larvae hardest. Pick a wormer with your vet that spares them, and treat only the animals that need it: overuse has already made worms resistant.
Clover feeds the grass. Mississippi State puts white clover at about 75 to 150 lb of nitrogen an acre a year. Keep it to 30 to 40% of the pasture, because above 50% legumes the risk of bloat goes up.
Holds upseveral studies and extension guides
Pigs · fruit drop only
In a Michigan State pilot on an organic orchard, pigs ate the early fallen apples and the pest larvae inside them. Parts of the orchard without pigs had 3 to 5 times more plum curculio damage, and the larvae didn't survive a pig's gut. The researchers called it early data.
Pigs root up grass, so they belong in the tree strip only, behind netting, for a few weeks. They also need extra protein, since apples have very little.
Early dataone pilot
These follow two of the permaculture principles David Holmgren set out in 2002: integrate rather than segregate, so each animal does a job the others can't, and produce no waste, so manure, windfalls and pest larvae turn into feed or fertility. Every helper also adds work: fences, moves, feed and a vet plan.
Soil and cover
Use grasses and legumes suited to the area, move the herd by how the grass is recovering, not the calendar, and keep a spot for holding cattle in wet weather.
Manure
Collect manure and bedding from the straw ring into a contained compost area, then spread the finished compost on the tree strips, where the herd doesn't graze right away. Ohio State puts bedded-pack manure at about 10 to 16 lb of nitrogen a ton, and it keeps more of it under a roof. Composting heat kills weed seeds. Soil and manure tests set how much goes where; keep raw manure away from fruit near harvest.
Energy
Solar panels on the roof can run a small water pump, controls and electric fencing. Use float valves, leak alarms and a backup water source. Panels add load, so the structure has to be checked for them.
Habitat
Add native flowering ground cover and windbreaks where the weather calls for them, protect young trees, and keep habitat strips outside the cattle's reach. Trees do shade out some grass, so they cost some pasture.
Benefits depend on the site and the management. Nothing here assumes the farm is carbon neutral, self-sufficient in water or more productive. Manure management reference.
Part 4 · Size and limits
At the example numbers: 1,200 lb cows eating 2.5% of their weight a day, average grass that grows 4,000 lb an acre a year, half of it eaten, grazing April to November and hay the rest of the year. Better grass or a longer season needs less land.
These are planning sketches, not a stocking rate. A yearly total doesn't prove there's enough grass in a dry summer or that the grass gets enough rest. A grazing planner works that out month by month. Clover at 30 to 40% of the pasture (G‑8) adds nitrogen; enter the growth your own grass and clover mix gives.
Herd dry matter a day = cows × weight × intake. Pasture needed = dry matter a day × days on pasture ÷ (growth per acre × share eaten). Hay = dry matter a day × days off pasture ÷ (1 − waste).
Spring flush: if the land is sized for the grazing season, spring grows the spring share of it in about 91 days, so it outgrows the herd by (days on pasture × spring share ÷ 91). The pastures to skip are the ones the herd can't keep up with.
Fruit cap = cows × weight × 0.5%, as dry matter, shown as fresh apples at 14.4% dry matter.
Barn: one shared straw ring of cows × bedded space. To let every cow eat at once along the inner arc, 75% of the arc is trough (the rest is gates). Trough radius r = the larger of 35 ft and trough length ÷ (2π × 0.75). A 14 ft feed apron is added to the bedded area. Roof outer radius R = √[(r + 14)² + bedded area ÷ π]. A 12 ft feed lane for the tractor sits inside the troughs. One roof covers all of it, hay included: roof area = πR². The minimum radius and the apron and ring widths are sketch allowances, not engineering standards.
Land = pasture ÷ 0.85 + the roofed center. The 15% covers tree strips and the road. The site diameter assumes a perfect circle of usable land. The plan drawing and the 100-cow picture don't resize to these results.
01 · Capacity
Acreage, grass growth, cattle weight and the season decide how many animals the land feeds. Subtract the center, the road and the tree strips first. At the example numbers, 100 cows need about 430 acres (G‑10).
02 · The center
Drainage, manure removal and firm footing matter at every gate. Gates have to guide cattle without dead ends and never mix them with feed trucks; the road crossing needs a set order of operations.
03 · Water
A strip running straight downhill can speed up erosion. Survey the contours, how fast the soil soaks up water and where storm overflow goes before digging anything.
04 · Structure
For 100 cows the round barn is one roof of about 20,000 ft² over the hay, the feed lane, the feeding strip and the straw. Have an engineer check it for snow, wind and any solar panels before you price it.
In one sentence
A wheel of twelve pastures can put feed, water and shelter in one place and rest the grass, as long as the land sets the herd size, the season sets the schedule, the fruit stays a small treat, and the roof covers the herd once instead of twelve times.
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