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Growing a strawberry is the cheap part. Picking it, chilling it and getting it to you in one piece costs more than twice as much — and in January it hasn't even been grown anywhere near you.
Walk into a shop in the middle of winter and there they are. A little plastic box of strawberries, bright red, in the snow-months.
Somebody grew those. Somebody picked them — by hand, one at a time. Then a chain of people and machines fought very hard to stop them going mouldy long enough to reach you.
This episode is that journey, and what each step of it costs.
Wheat is cut by a machine. Potatoes are dug up by a machine. Strawberries are picked by people, bending down, one berry at a time — because a strawberry is soft enough to bruise if you hold it too tightly, and because on the same plant on the same day some berries are ripe and some are not. A machine can't tell the difference. A person can.
On a big California farm, a picker fills about three trays an hour at the quiet ends of the season, and five to eight trays an hour when the plants are loaded. A tray holds eight one-pound boxes — the little plastic punnets you see in the shop.
So every single punnet in that shop passed through somebody's fingers.
Here is the thing most people never think about. A picked strawberry is still alive. It goes on breathing — slowly using itself up — and the warmer it is, the faster it does that.
A berry picked in a sunny field is full of what growers call field heat, and every minute it stays warm is a minute of its life spent. The rule of thumb is that dropping the temperature by 10°F roughly halves how fast a fruit breathes. So cold isn't a nice-to-have. Cold is time.
Strawberries should be cooled as fast as possible after picking. Wait more than about an hour and a smaller share of the fruit is still good enough to sell.
So trays go straight from the field onto a truck, and the truck drives to a cooler — a room where cold air is dragged through the stacks of fruit rather than just blown around them, which pulls the heat out far faster. That's called forced-air cooling, and it's the standard everywhere.
After that the berries live at about 0°C (32°F) the whole rest of the way: cold room, cold lorry, cold shelf. Even done perfectly, a strawberry gets you somewhere around seven days, and up to ten to fourteen if absolutely everything goes right.
Break the cold chain anywhere — one warm afternoon on a loading bay — and you don't get those days back.
These are the real figures from a University of California study of strawberry farms on the central coast of California. One acre, one season, about 9,000 trays of fruit. Press to add each cost as it happens.
Divide it out and one tray costs about $10.62 to produce. A tray is eight pounds of fruit, so that's about $1.33 a pound before the shop has touched it — of which roughly 41 cents was growing it and 92 cents was everything after.
The shop then has its own costs on top: its own cold rooms, its own staff, its own bin for the ones that spoiled before anyone bought them.
A friend says strawberries are expensive because they're difficult to grow. Based on the table, what would you tell them?
This is the same California farm study: the share of its whole year's crop that gets picked in each month. Open "See the numbers" and find January.
| Month of the year | California central coast strawberries |
|---|---|
| Jan | 0 |
| Feb | 0 |
| Mar | 0 |
| Apr | 5 |
| May | 12 |
| Jun | 25 |
| Jul | 26 |
| Aug | 18 |
| Sep | 12 |
| Oct | 2 |
| Nov | 0 |
| Dec | 0 |
Half the entire year's crop is picked in June and July. And for five months of the year — November through March — that farm picks nothing at all. Not a little. Nothing.
So the strawberries in the shop in January were not grown there. In the United States, winter berries come mostly from Florida, whose season runs roughly December to March, and from Mexico — about 85% of Mexico's strawberry shipments into the US arrive in the winter and spring months.
A further journey. More days in the cold chain. More chances for something to go wrong. And a much smaller number of farms picking, which is the other half of why a winter strawberry costs what it does.
Why would a punnet of strawberries in January cost more than the same punnet in July?
Now the uncomfortable part.
A lot of picked strawberries never get eaten. Across the world, losses between the field and the shelf can run as high as half the crop — bruised in handling, gone mouldy, left too warm too long, or simply not sold before their seven days ran out.
Think about what that means for the ones that do arrive. Somebody paid to grow, pick, chill and haul the ruined ones too. That cost doesn't disappear. It lands on the punnet you actually buy.
Which is why the whole industry is so strange about temperature and speed. Every hour saved between the field and the cooler is not fussiness. It is more of the crop surviving, and every berry that survives makes the rest a little less expensive.
And it's why a strawberry left on a warm kitchen counter for an afternoon is such a shame. All that effort to keep it cold, undone in one afternoon.
A farm's trucks break down and the picked trays sit in a sunny field for four hours before reaching the cooler. What is the real damage?
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All cost, yield and harvest-timing figures: UC Cooperative Extension / UC Davis Agricultural and Resource Economics, "Sample Costs to Produce and Harvest Strawberries, Central Coast Region — 2021". The study assumes 9,000 trays per acre, each tray holding eight 1-pound clamshells, and states directly: TOTAL COST PER ACRE - HARVEST COST PER ACRE = GROWING COST PER ACRE, $95,613 - $66,259 = $29,354. The individual rows of the worked table are that study's own lines: harvest (picking, packing, containers) $53,022; load and haul $1,335; cooling $4,500 (stated as $0.50 per tray); market/sales fee $7,200 (8% of an assumed $10.00 per tray); California Strawberry Commission assessment $203 (grower share $0.0225 per tray). They sum to $95,614 against the study's $95,613 because each line is rounded to the dollar. Picking rate: the same study — "Each worker harvests roughly three trays per hour early and late in the season when fruit load is light; during peak production each worker can harvest five to eight trays per hour." Strawberries are harvested by hand and packed into containers and trays in the field. Harvest by month (chart): the same study's Table B — April 5%, May 12%, June 25%, July 26%, August 18%, September 12%, October 2%, with harvest running April through early October. Cooling: strawberries should be cooled as soon as possible after harvest, and delays beyond one hour reduce the percentage of marketable fruit; forced-air cooling is the industry standard; storage at 32°F with 90-95% relative humidity. Respiration roughly halves for every 10°F reduction in temperature. Shelf life from harvest to the consumer runs up to about 10-14 days with everything done right, more typically around 7. (UC Davis Postharvest Research and Extension Center; "Postharvest Cooling and Handling of Strawberries", Southern Region Small Fruit Consortium; UMass Extension.) Losses: globally, postharvest losses of strawberries can reach up to 50%. (IntechOpen, "Post-Harvest Problems of Strawberry and Their Solutions".) Winter supply: Florida's strawberry season runs roughly December to March, and about 85% of Mexico's US-bound strawberry shipments arrive during the winter and spring months. (USDA Economic Research Service, "The Changing Landscape of U.S. Strawberry and Blueberry Markets", EIB-257.)