Man-made vegetables: are they vegan? 6 bred and engineered ones you can buy

Yes. Bred or engineered, the six vegetables here are plants, and every added gene named in the regulator and maker files we read came from a plant, a bacterium or a virus. The only animal on USDA’s list of bioengineered foods is a salmon. Our pick for the shopping cart is Broccolini, a cross of broccoli and gai lan with no engineering in it.

The old version of this page warned that genetically modified crops may contain animal DNA. We went looking. USDA’s List of Bioengineered Foods has 14 entries, and 13 of them are crops: alfalfa, apples, canola, corn, cotton, eggplant, papaya, pineapple, potato, soybean, summer squash, sugarbeet and sugarcane. The fourteenth is AquAdvantage salmon, which is an animal all the way through and needs no gene from anywhere to fail a vegan’s test. The tomato is missing from that list, even though the Purple Tomato’s maker answers “Yes” when its own FAQ asks whether it is bioengineered. That gap matters less than it looks: a company whose records show a food is bioengineered has to disclose it whether or not the food is on the list. Summer squash, the one cucurbit on the list, shares a family with the cucumber, and our guide to eating cucumber leaves covers what breeders did about that family’s bitterness.

What decides whether a vegetable counts as bioengineered

USDA’s disclosure standard covers food that contains detectable genetic material modified with lab recombinant DNA techniques, where the change could not have come from conventional breeding or been found in nature. So Broccolini, made by crossing two plants, sits outside it. The Purple Tomato, built by adding genes in a lab, sits inside it.

Neither status says anything about animals. The vegan question for a vegetable is simpler than the label question, and for all six below the answer is the same: each is a plant, and none of the regulator or maker documents we read for them names an animal as the source of any added gene.

6 man-made vegetables, and where their genes came from

Product	Maker	How it was made	Added genes named from	Who can buy it
Broccolini	Sakata Seed, sold by Mann Packing	Conventional cross	None added	Shoppers; seed as Aspabroc
Purple Tomato	Norfolk Healthy Produce	Genetic engineering	Snapdragon, plus an E. coli marker	Home gardeners, as seed
White Russet potatoes	J.R. Simplot	“Modern biotechnology”	Potato and a wild potato (Innate E12)	Shoppers, in bags
Performance Series sweet corn	Seminis	Genetic engineering	Bacillus thuringiensis	Licensed growers
Attribute II sweet corn	Syngenta	Genetic engineering	Bacillus thuringiensis	Growers, as seed
Destiny III and XPT 1832 III squash	Seminis	Genetic engineering	Three plant viruses, plus an E. coli marker (line CZW-3)	Licensed growers

Broccolini

Sakata Seed bred Aspabroc as a natural hybrid of broccoli and gai lan, and it reaches supermarket produce sections under the name Broccolini, a registered trademark of Mann Packing. Mann’s says its product is the only baby broccoli that can be called Broccolini, so by its account anything else sold under that name isn’t the real thing. Nothing in it was engineered, so it carries no disclosure. If you grow brassicas, skip the bunch: Sakata sells the same hybrid to home gardeners as Aspabroc seed.

Purple Tomato

Norfolk’s tomato is purple inside and out because two snapdragon genes, Delila and Rosea1, switch on anthocyanin production in the fruit. FDA’s file on it also lists a third added gene, nptII, an antibiotic-resistance marker that comes from E. coli. FDA closed its consultation in June 2023 with no further questions on the safety of food from it. Norfolk sells it as seed through its own store, which opens on December 1 and lists five varieties for the 2027 season. Its FAQ does not say where to buy the fruit itself. Don’t buy it if you avoid bioengineered food, because Norfolk says plainly that it is.

White Russet potatoes

Simplot’s White Russet page promises less bruising and cut potatoes that stay ivory instead of browning, and credits “proven modern biotechnology”. It does not name the genetic event. Simplot’s Innate Russet Burbank potato, event E12, was assessed by Food Standards Australia New Zealand, which found its added DNA came only from potato and a wild relative, Solanum verrucosum, and that it makes no new proteins. Potato is on USDA’s list, so these fall under the disclosure rules. The downside is finding them. Simplot’s page names no store or region, so the bag in front of you is the only way to know.

Performance Series sweet corn

Seminis puts three Cry genes from the soil bacterium Bacillus thuringiensis into these hybrids, aimed at caterpillars and corn rootworms, and the same corn tolerates Roundup herbicides. Seminis still tells growers that pest monitoring is necessary and insecticide applications may be needed. Maryland’s extension service goes further: these varieties do not give effective control of corn earworm. It isn’t garden seed in the usual sense either. Sellers want a valid Bayer technology license number on the order.

This is the one product here where vegans can reasonably disagree. The Bt proteins are toxic to insect pests by design. If you count a caterpillar as an animal whose death you want to avoid causing, a plant built to poison it is a harder sell than one that merely gets sprayed. The other view starts from the Vegan Society’s definition, which asks vegans to avoid animal exploitation and cruelty as far as is possible and practicable, not to eat only crops that no insect died for. Our line: Bt sweet corn is vegan, and our piece on crop deaths argues why insects lost to farming don’t make veganism pointless.

Attribute II sweet corn

Syngenta’s Attribute II appears in the same University of Maryland guide, and in the field trials it cites, Attribute II or Attribute Plus gave full control of the ear-feeding caterpillars that Performance Series misses. The same guide says that none of the Bt traits control stink bugs or sap beetles, and that sprays may still be needed for those. The vegan verdict is the same as for Performance Series. The label won’t tell the two apart either, since the disclosure text is “bioengineered food”, not the name of the trait.

Destiny III and XPT 1832 III squash

Rupp Seeds lists both among the Seminis transgenic squash, and sells XPT 1832 III as a yellow straightneck with transgenic resistance to watermelon mosaic, zucchini yellow mosaic and cucumber mosaic viruses. Health Canada’s assessment of Seminis line CZW-3, which resists the same three viruses, says it carries coat-protein genes from each of them, with nptII from E. coli as the selectable marker. It also found the line expressed the cucumber mosaic coat protein at levels well below those measured in zucchini, crookneck squash and melons from supermarket shelves. XPT 1832 III seed cost $67.90 per 1,000 at Rupp in November 2026. Every order needs a Squash Technology Stewardship Agreement, and buyers agree not to plant it in Maine, where Seminis hasn’t commercialized it. A home gardener without that agreement can’t buy either.

How to check a vegetable yourself

USDA allows four forms of disclosure: the words “bioengineered food”, a symbol, a scannable link, or a text-message option. For loose produce in a bin, the retailer is responsible for the sign on or next to the display. Restaurants and very small food manufacturers are exempt, so nothing obliges a restaurant to tell you its sweet corn is bioengineered.

None of that tells you whether a vegetable is vegan, because every one of them is. What it tells you is whether the plant was engineered, and that is a separate choice you may want to make for other reasons. Bred crosses like Broccolini don’t need a disclosure, because the definition excludes changes conventional breeding could make. For the rest of the cart, our vegan grocery list covers the packaged staples where the vegan question is the hard one.