Never washed. Briefly famous. Currently being sued.
The complete story of the American blackberry, from a field in Mexico to a courtroom in California to your kitchen sink. Every claim below carries a source. No blogs were trusted in the making of this page.
Here is the plot twist nobody expects: the clamshell on the store shelf is not a package your blackberries were put into. It is the package they were picked into. Blackberries are hand-picked directly into the retail clamshell right there in the field, the lid is closed, and that is the last time anyone touches them before you do.12
From the field, the flats go straight into forced-air cooling, which blasts cold air through the boxes and drops the fruit to about 32°F. What the industry deliberately avoids is water: no wash tank, no hydrocooling, no ice bath. University of Georgia Extension guidance tells growers to avoid hydro and ice cooling for blackberries entirely.1 NC State Extension puts it flatly: berries are not typically washed.2
A blackberry is a cluster of tiny juice balloons (drupelets) with paper-thin skins. Moisture ruptures them, leaks juice, and rolls out the red carpet for Botrytis cinerea, the gray mold fungus that is the number one postharvest rot of berries. Growers instead fight mold with speed and cold: pick it, cool it fast, keep it dry, and use modified-atmosphere packaging (extra CO2) to slow decay organisms down.13
So if nobody washes them, what keeps them safe? The safety system is upstream, and it is a federal rulebook called the FSMA Produce Safety Rule: agricultural water must test with no detectable generic E. coli per 100 mL, harvest workers follow strict hand hygiene, sick workers are excluded, and fields and equipment follow sanitation standards.2 Prevention instead of washing, because washing this particular fruit does more harm than good.
One more fact that reframes everything below: most US blackberries are imports. Roughly 78% of the volume comes from Mexico, overwhelmingly the state of Michoacán, and only about 20% is grown in the US.4 Remember Michoacán. It comes back in Chapter 3.
Driscoll's, the largest berry brand in the world, works exactly like the rest of the industry. Its own FAQ says its berries are hand-picked and field-packed (blueberries are the occasional exception).5 Its official Berry Care page is even more direct. It instructs you to refrigerate your unwashed blackberries and, right before eating, rinse them gently with cool water.6 The company's FAQ adds the reason: never wash berries until just before you eat them, because the moisture decreases their freshness.5
Driscoll's says its growers and facilities are certified under GlobalG.A.P. or PrimusGFS, that it samples water, tests for residues, monitors the growing environment, holds ranches pending residue test results, and runs more than 2,500 audits a year across fields, packing houses, and coolers.5 These are the company's own published claims, presented here as claims. Keep them in mind, because Chapter 4 is about people suing over whether the reality matched the brochure.
Three suspects get blamed for everything: germs, pesticides, and mold. Here is what the evidence says about each, with the numbers left in.
The only US outbreak tied to fresh blackberries is hepatitis A in 2019: 20 cases across 7 states, 11 hospitalizations, zero deaths. Every berry traced back to growers in Michoacán, Mexico, and investigators never found a single common grower.4 Context matters: the FDA says no enteric virus outbreak has come from US-grown berries in 35 years, and its 2019-2023 testing of frozen blackberries found hepatitis A or norovirus in under 1% of samples.9 Low risk. Not zero. That gap is the honest answer.
The USDA's Pesticide Data Program tested 685 fresh blackberry samples in 2024: 82.5% carried at least one detectable residue, about 3.6 different pesticides per sample on average. But 96.8% sat within US legal limits, and across all foods the program runs above 99% compliance. The USDA's position: residues at or below the EPA tolerance pose no health risk, because tolerances are only set after a finding of reasonable certainty of no harm.8
The risk you will actually meet is gray mold, Botrytis cinerea, the main postharvest rot of blackberries.13 It is a spoilage problem, not a poisoning plot, but it spreads berry to berry inside the clamshell. Rule of the fridge: if a berry is moldy, it and its closest neighbors are done. Do not negotiate with the fuzz.
In 2026 the berry giant collected lawsuits the way its berries collect residues: several at once, from several directions. Everything in this chapter is allegation unless a source says otherwise. Nothing has been proven in court, and no Driscoll's product has been recalled over any of it.
David Harada, Driscoll's former food safety and regulatory compliance manager for the US and Canada, sued the company. He alleges that over half of Driscoll's shipments to Canada between 2022 and 2024 exceeded Canadian residue limits for bifenthrin, captan, and iprodione, that the company removed Canadian rules from its compliance tracking system in 2022 so violations would stop flagging, and that a director asked whether the company had "plausible deniability." Canada's food inspection agency did confirm over-limit findings in its own 2022-2024 inspections and sent repeated warnings, including one in June 2025 about consumers reporting a chemical taste. Harada says he was fired after raising the issue internally. Driscoll's denies the allegations and says it never knowingly shipped unsafe product.1215
Consumers from four states sued over conventional strawberries, alleging Driscoll's marketed rigorous safety and sustainability while not disclosing residues of PFAS-related pesticides: greenwashing, in the plaintiffs' word. The case followed a May 2026 lab report by the advocacy site Mamavation, which found residues within US EPA tolerances but above some other countries' limits. Driscoll's response, in full: "We reject the allegations in this lawsuit and believe they are without merit."13
Three advocacy groups (Beyond Pesticides, the Organic Consumers Association, and Toxin Free USA) sued over Driscoll's sustainability messaging, alleging heavy plastic use in growing and packaging and citing lab testing that reportedly detected microplastic particles in a sample of its blueberries. Also allegations, also unproven.13
Quebec lawyers asked a judge to authorize a class action covering anyone in the province who bought Driscoll's strawberries, raspberries, blackberries, or blueberries since January 1, 2022, alleging the company failed to disclose residues above Canadian limits. Authorization alone could take a year. The allegations have not been tested in court.1416
Canada's residue limits for some berry chemicals are a small fraction of the US limits, and for others Canada has no specific limit at all, so a strict catch-all applies. Seven years of Canadian inspection data show the pattern clearly: the highest readings still passed in the US.15
| Chemical on blackberries | Canada limit | US limit | Highest Canada found |
|---|---|---|---|
| Captan (anti-mold) | 0.1 ppm (catch-all) | 25 ppm | 3.36 ppm |
| Bifenthrin (insecticide) | 1.0 ppm | 1.0 ppm | 0.37 ppm |
A toxicologist quoted by CBC put the consumer stakes in perspective: for one of the flagged findings, "to get an effect, one would have to eat 19 kilograms" of berries. His actual worry was lifetime exposure adding up across all foods, which is a regulatory debate, not a berry emergency.15 The lawsuits are fundamentally about compliance and disclosure: whether the company followed the stricter rules of the country it shipped to, and whether its marketing told the whole story.
Short answer: the chemistry is real, the famous study is real, and it was done on the wrong fruit. In 2017, researchers at the University of Massachusetts Amherst published the study behind every baking soda headline, in the Journal of Agricultural and Food Chemistry. On apples, a 1% baking soda solution (about a tablespoon per liter) completely removed two pesticides, thiabendazole and phosmet, from the fruit's surface, in 12 and 15 minutes respectively, beating both tap water and bleach solution. The mechanism is alkaline hydrolysis: the mildly basic solution (pH about 8.3) actively breaks down alkali-sensitive pesticide molecules while the soak loosens them.10
Median reductions across studies, mostly on firmer produce and often at stronger concentrations than a home kitchen uses. The review itself warns the results may not generalize neatly to household practice.11
Now the three catches, and they are the whole story for blackberries:
Baking soda is the best-evidenced home wash for firm fruit you can soak and scrub. For blackberries, no study has ever tested it, the required soak destroys the fruit, and it cannot touch the systemic residues that top the violation charts anyway. The Driscoll's lawsuits change none of this: they concern foreign legal limits and marketing honesty, at levels that stayed within US tolerances, and nothing at a kitchen sink settles a question that is now in front of judges.
Numbered to match the citations above. Peer-reviewed studies and government data first, company statements labelled as company statements, lawsuit coverage labelled as allegations reporting.
Status note, October 2026: all four lawsuits are at the allegation stage. Driscoll's denies wrongdoing. No court has ruled, and no berry recall has resulted from any of them.