What a Farm Actually Does, Across a Year

TL;DR. A farm is a business that converts land, water, seed, fertiliser, fuel, and a great deal of timing into a perishable product with a fixed harvest date and a volatile price. An annual crop farm plants, feeds, protects, and harvests inside one season. An orchard is a twenty-year capital investment that yields nothing for the first three to five years and then depends absolutely on bees for a two-week window each spring. Understanding the calendar, the labour, and the economics explains most of what you see in a supermarket, including why some produce is cheap, why some is imported from the other hemisphere, and why perfectly good food is left in the field.

Key takeaways

• An orchard yields nothing for three to five years and is expected to run for 15 to 30. Every decision at planting is locked in for decades.
• Pollination is the tightest bottleneck in fruit growing. Many fruit trees cannot pollinate themselves and need a compatible second variety flowering at the same time, plus insects to carry the pollen.
• Most fruit trees set far more fruit than they can ripen and are deliberately thinned, by hand or chemically, to get saleable size and to prevent biennial bearing.
• Harvest labour is the largest single cost in most fruit and vegetable production, often 40 to 60 percent, and it is the constraint driving mechanisation and crop choice.
• Cosmetic grading standards, not spoilage, cause a large share of on-farm food loss.

Two completely different businesses

In short: Annual crops are a one-year bet, perennial crops are a twenty-year mortgage, and they behave nothing alike.

That last row is why almond growers in a Californian drought behave differently from tomato growers. A tomato grower plants less. An almond grower keeps buying water at any price, because letting the trees die means writing off twenty years.

The annual crop year

In short: Prepare, plant, feed, protect, harvest, and get the field ready again, with each step on a narrow window.

Take a field vegetable crop, say lettuce or carrots, in a temperate climate.

Winter: planning and soil preparation. Decide the crop and variety, based on last year's prices, contracts already signed with buyers, disease history of the field, and rotation requirements. Order seed. Take soil tests. Apply lime if pH needs correcting, because it takes months to act. On heavier soils, primary tillage may happen in autumn so frost can break up clods over winter.

Early spring: seedbed preparation. The soil must be worked to a fine, level tilth, because a small seed needs contact with moist soil particles to germinate. Too coarse and the seed sits in an air pocket and dies; too fine and the surface caps after rain. This is where compaction damage is done, because the temptation to get on the field when it is still wet is enormous and the cost is invisible until later.

Planting. Either direct seeding (a precision drill placing seeds at exact spacing and depth) or transplanting modules raised in a glasshouse. Transplants cost more and buy three to five weeks, which for a crop sold by earliness is often decisive.

Establishment. The most vulnerable period. Slugs, birds, damping-off fungi, and crusting can all take out a stand. Irrigation to get even germination.

Growth: feeding and protecting. Nitrogen usually goes on in split applications rather than all at once, because a single big dose leaches away and can burn roots. Weeds are controlled by herbicide, mechanical hoeing, hand weeding, or plastic mulch. Pests and diseases are monitored, ideally by scouting and thresholds rather than calendar spraying (see Chapter 6).

Harvest. For most vegetables this is a moving target rather than a date: lettuce is cut when heads reach size, and a field is walked repeatedly. For a crop like processing tomatoes or peas, harvest is one machine pass on one day, scheduled by the factory, and the grower's contract specifies quality thresholds that determine payment.

After harvest. Residue is incorporated or left as cover. A cover crop may be drilled immediately, because bare soil over winter loses nitrogen and topsoil.

Rotation, and why nobody plants the same thing twice

In short: Repeating a crop in the same field concentrates its specific pests and diseases until yields collapse.

Every crop has enemies specialised to it, and those enemies persist in soil. Grow brassicas repeatedly and clubroot builds up, and it survives in soil for up to twenty years. Grow potatoes repeatedly and potato cyst nematode accumulates. Grow wheat repeatedly and take-all fungus does the same.

A rotation breaks these cycles by leaving a gap during which the specialist pest has nothing to eat. It also balances nutrient demand, and, in the classic form, includes a legume that leaves nitrogen behind for the next crop.

The four-course Norfolk rotation of the eighteenth century (wheat, turnips, barley, clover) is the textbook example, and it was genuinely revolutionary: it eliminated the fallow year that medieval three-field systems required, so a third more land was in production, and the turnips and clover fed livestock through winter, which meant more manure, which meant higher yields again. Modern rotations are more varied but follow the same logic: alternate deep-rooted and shallow-rooted crops, alternate families, and put a legume in.

The orchard year

In short: A perennial fruit crop is built over five years, and each year runs through dormancy, bloom, fruit set, thinning, growth, harvest, and post-harvest recovery.

An apple orchard is the fullest example, and most other tree fruit is a variation on it.

Establishing the orchard (years 0 to 5)

Site selection comes first and cannot be undone: slope for cold air drainage, aspect for sun, soil depth and drainage, and water rights. Then soil preparation, because this is the only chance to fix subsoil problems before roots occupy the ground for twenty years.

Trees are planted as grafted whips: a chosen variety grafted onto a chosen rootstock (see Chapter 5). Modern high-density orchards plant 2,000 to 4,000 trees per hectare on dwarfing rootstocks, trained flat against wires in a tall spindle or fruiting wall system. This is a completely different object from the mental image of an orchard: it looks like a vineyard, is about 3 metres tall, and is designed so every fruit is within reach from the ground or a low platform and every leaf gets light.

Why the change? Dwarf trees crop in year two or three instead of year seven, produce far more fruit per hectare, ripen more evenly because light penetrates the whole canopy, and cut the cost and danger of ladder work. The trade-off is that dwarfing rootstocks have weak root systems and the trees must be permanently supported on a trellis, plus irrigated, because shallow roots cannot chase water.

Years 1 to 3 are structural: training branches to the wire, removing fruit so the tree invests in wood rather than crop, irrigating, and protecting from deer and voles. The orchard costs money every year and returns nothing. Establishment costs of a modern high-density apple orchard commonly run to tens of thousands of dollars or euros per hectare before the first commercial crop.

The bearing year, month by month

Dormancy (winter): pruning. The single biggest skilled labour job of the winter. The pruner decides, cut by cut, how much crop the tree will carry, how light will reach the fruit, and how big the fruit will be. Pruning removes 20 to 30 percent of the previous year's wood, opens the centre to light, and renews fruiting wood. It is genuinely a craft, it takes years to learn, and mechanical hedging is a compromise that trades quality for speed.

Bud break and bloom (spring): the most dangerous four weeks. Frost risk, as covered in Chapter 3. And pollination.

Pollination, the tightest bottleneck in fruit

In short: Most apple, pear, cherry, and almond varieties cannot fertilise themselves and need a different compatible variety flowering at the same moment, with insects moving pollen between them.

Many fruit trees are self-incompatible: a genetic system recognises pollen carrying the same S-alleles as the tree itself and shuts down the pollen tube before it reaches the ovule. This is an anti-inbreeding device and it is absolute in apples, most sweet cherries, most pears, most plums, and almonds.

Practically, this means:

• An orchard must contain at least two compatible varieties, usually planted in alternating rows, or dedicated crabapple pollinisers placed every few trees.
• Their bloom periods must overlap. Varieties are grouped into bloom-time classes, and a grower matching an early bloomer with a late one gets nothing.
• Some varieties are triploid (three sets of chromosomes instead of two) and produce sterile pollen, so they cannot pollinate anything and need two other varieties in the block to pollinate each other and it. Bramley's Seedling, Jonagold, and Mutsu are all triploid, which is a real orchard design constraint.
• Something must carry the pollen. Wind does not do it for apples; the pollen is heavy and sticky.

That last point is why commercial pollination is an industry. Growers rent honeybee hives at roughly one to three hives per hectare for apples, delivered by truck for the bloom period and removed afterwards. Californian almonds are the extreme case: around a million hectares of almonds bloom in February over a few weeks, requiring on the order of two million hives, which is a large share of all managed honeybee colonies in the United States, trucked across the country in the largest managed pollination event on Earth.

Honeybees are not even the best pollinators for apples. Mason bees (Osmia) and bumblebees work at lower temperatures, in poorer weather, and visit more flowers per minute, and several growers deliberately manage them. Bumblebees are essential in glasshouse tomatoes, which need buzz pollination: the flower only releases pollen when vibrated at a particular frequency, which honeybees cannot do and bumblebees can. Before commercial bumblebee rearing in the late 1980s, glasshouse tomatoes were pollinated by workers with vibrating wands, one flower at a time.

Weather during bloom decides the crop. Bees do not fly below about 12 to 13 °C, do not fly in rain, and do not fly in strong wind. A cold, wet bloom week means poor fruit set no matter how many hives are present. A grower can do everything right for eleven months and lose the year to five bad days.

Fruit set and the June drop. After fertilisation, the tree assesses what it can support and aborts the rest. The natural shedding of excess fruitlets in early summer is called the June drop, and it is not a problem.

Thinning: deliberately throwing fruit away. Even after the June drop, most apple trees carry far more fruit than they should. If left alone, the result is a large number of small, poorly coloured, low-sugar apples, and a tree so exhausted it produces almost nothing the following year. That alternating pattern is biennial bearing, and it is one of the oldest problems in fruit growing.

So growers thin, aiming for roughly one fruit per cluster and a specific spacing along the branch. It is done chemically (with growth regulators or lime sulphur applied during bloom, which is cheap and imprecise) and then corrected by hand (expensive and precise). Removing 60 to 80 percent of the fruitlets to get a good crop feels wrong and is correct.

Summer: growth, irrigation, protection. Cell division in an apple finishes about 40 days after bloom, and everything after that is cell expansion, which is why early-season water stress permanently limits fruit size. Summer pruning opens the canopy so light reaches the fruit surface, because red colour in apples develops only in sunlight and is a major grading criterion. Netting goes up against hail and birds. Sprays continue against scab, mildew, and codling moth.

Harvest. Picked by hand, one fruit at a time, into a canvas bag, emptied into a bin holding 300 to 400 kg. A skilled picker moves one to two tonnes a day. Maturity is assessed by starch-iodine test (staining a cut fruit with iodine, which turns starch black and shows how far the starch-to-sugar conversion has progressed), by firmness with a penetrometer, by sugar with a refractometer, and by seed colour. Different destinations get picked at different maturities: fruit for immediate sale is picked riper, fruit for nine months of controlled-atmosphere storage is picked distinctly firmer.

After harvest. Post-harvest nitrogen, so the tree builds reserves for next spring's flowering, since flower buds for next year are already forming this summer. Leaf fall, sanitation to reduce overwintering disease, and back to pruning.

Labour: the number that decides everything

In short: Hand harvest is the dominant cost in fruit and vegetables, and its availability decides what gets grown and whether it gets picked.

For grain, labour is a rounding error: one operator with a combine harvests a hectare in under an hour. For fruit and vegetables it dominates.

Two consequences run through the entire produce economy.

Mechanisation is bred, not just engineered. Processing tomatoes are machine harvested because in the 1960s breeders at UC Davis produced a tomato with uniform ripening, a tough skin, and a compact determinate plant, developed jointly with the harvester. The machine and the plant were designed for each other. The same has happened with dwarf orchard architecture, with once-over harvested peas and beans, and increasingly with robotic apple picking, which is still not solved at commercial scale because identifying, reaching, and detaching a fruit without bruising it is genuinely hard.

Labour supply decides what is planted. Fruit and vegetable production worldwide leans heavily on seasonal and migrant labour. When that supply is restricted, growers switch to mechanisable crops, move production abroad, or leave fruit unpicked. Crops left in the field for lack of pickers are a regular news story in the UK, US, and Australia, and it is an economic decision, not carelessness: if the price does not cover the picking cost, picking loses money.

The economics, which explain the supermarket

In short: Growers are price takers with fixed harvest dates and perishable goods, which is the weakest possible bargaining position.

A grower faces:

• Fixed costs regardless of yield: land, trees, irrigation infrastructure, machinery.
• A harvest date they do not control, set by the crop.
• A product that loses value by the day.
• Buyers who are far larger than they are. In many countries a handful of supermarket chains control most of the retail market.
• Prices set by aggregate supply. A perfect growing season everywhere means a glut and a price crash. A grower can have their best-ever yield and their worst-ever income in the same year.

Which produces behaviours that look irrational from outside:

Cosmetic grading. Buyers specify size, colour, and shape tolerances. Fruit outside spec is downgraded to juice or processing at a fraction of the price, or not picked at all. A large share of on-farm loss is fruit that is perfectly edible and the wrong shape. The "wonky veg" retail lines of recent years are a partial correction to this.

Contracts and dumping. Processing crops are grown on contract at an agreed price. If the factory rejects a load on a quality specification, the grower may have nowhere else to send it that day.

Counter-seasonal trade. Northern-hemisphere supermarkets want apples, grapes, blueberries, and asparagus year-round. Southern-hemisphere suppliers (Chile, New Zealand, South Africa, Peru, Argentina) supply the northern winter. This is why an apple in a British supermarket in June may be from New Zealand and an apple in December may be from British controlled-atmosphere storage since September. Both are perfectly good; they got there differently.

Vertical integration in bananas and a few other crops, where the same company owns plantations, ships, and ripening rooms, because the logistics are so tight that coordination beats markets.

Greenhouses and the controlled extreme

In short: Protected cultivation trades capital and energy for control, and produces most of the tomatoes, cucumbers, and peppers sold in northern Europe.

At the far end of intensity is protected cultivation. A modern Dutch glasshouse is closer to a factory than a field: hydroponic growing in rockwool or coir rather than soil, computer-controlled nutrient solution, CO₂ enrichment to 800 to 1,000 ppm (often captured from a combined heat and power unit that also supplies heat and electricity), supplementary LED lighting, bumblebee hives for pollination, and biological pest control using predatory mites and parasitic wasps rather than sprays.

The results are startling. Field tomatoes yield perhaps 50 to 100 tonnes per hectare per year. Dutch glasshouse tomatoes exceed 500 tonnes per hectare, with a fraction of the water per kilogram, because water is recirculated rather than lost to soil and evaporation. The Netherlands, a small and cold country, is by value one of the largest agricultural exporters on Earth almost entirely because of this.

The costs are energy and capital. A heated glasshouse in a northern winter is energy-intensive, and the carbon footprint of a locally grown heated winter tomato can exceed that of one trucked or shipped from Spain or Morocco. "Local" and "low carbon" are not the same variable, which is a recurring theme in Chapter 9.

Scale, from smallholding to agribusiness

Worldwide, most farms are small. Estimates put roughly 500 million farms at under two hectares, and those farms produce a large share of the food eaten in low- and middle-income countries. At the same time, a small number of very large operations produce most of what is internationally traded.

Both realities matter for this book. The mango in a European supermarket probably came from an export-oriented operation with cold chain and certification. The mango eaten in the country where it grew probably came from a few trees. Different systems, different economics, same fruit.

The bottom line

• Annual crops are a one-year bet; perennial crops are a multi-decade commitment where the variety and rootstock choice at planting is locked in for twenty years.
• Pollination is the tightest bottleneck in tree fruit: incompatible varieties, mismatched bloom times, or five days of cold rain during bloom can each cost the whole crop.
• Trees set far more fruit than they can finish, so growers deliberately remove most of it to get size, colour, sugar, and a crop again next year.
• Hand labour, not land or inputs, is the dominant cost in fruit and vegetables, and it decides which crops are viable and whether a crop is picked at all.
• A large share of on-farm loss is cosmetic rejection, not spoilage.

Sources and notes

Orchard systems, rootstock-driven planting densities, and establishment costs follow extension publications from Cornell, Washington State, and East Malling. Self-incompatibility and triploidy in apples, and the bloom-overlap requirement, follow standard pomology references. Californian almond pollination hive numbers are from USDA and Project Apis m. reporting. Buzz pollination and the commercial bumblebee industry follow Velthuis and van Doorn's history of bumblebee rearing, 2006. Labour requirements per hectare are drawn from national farm business surveys and extension enterprise budgets. The processing tomato mechanisation history follows the UC Davis breeding and harvester development record. Rotation principles and clubroot persistence follow standard agronomy. Dutch glasshouse yields and the Netherlands' agricultural export position are from Wageningen University reporting and FAO trade data. Smallholder share of global farms is from FAO and Lowder et al.'s farm size analyses.

Open questions. How much on-farm loss is genuinely attributable to cosmetic grading rather than to logistics and price is poorly measured and estimates vary widely. Whether robotic harvesting will reach commercial viability for soft fruit within the next decade is genuinely uncertain.

👉 Next: why your apple is a clone, and how plant breeding actually works.