If you’ve seen recent headlines and bought a bagged salad, a bunch of cilantro, or a container of raspberries, you’re a little worried about what’s in your fridge right now. The United States is in the middle of its worst cyclosporiasis outbreak on record, with confirmed cases already surpassing the previous high set back in 2019. Cyclospora cayetanensis is a microscopic parasite that hitches a ride on contaminated produce and water. It’s an unsettling (and somewhat gross) reminder of just how many hands supermarket produce passes through before it reaches your plate. This is exactly the kind of moment that makes backyard growing feel less like a hobby and more like a genuinely smart food safety decision.
What is Cyclospora, and Why Is 2026 So Bad?
Cyclospora cayetanesis is a microscopic parasite that is often spread through contaminated food or water. Exposure to the parasite can cause some very unpleasant symptoms, such as explosive diarrhea, fever, and dehydration. What makes it even more insidious is that gestation can take up to 2 weeks. Because of this, it’s difficult for authorities to track the source of the contamination.
As of this writing, more than 30 states have been affected by the outbreak, with Michigan and Ohio having the highest number of cases. 2026 is on track to be the worst year on record, with case counts already surpassing the prior U.S. high of 4,700 set in 2019.
Which Foods Have Been Linked to Cyclospora Outbreaks?
Right now, health officials in states like Michigan and Ohio are still working to pin down exactly which crop is behind this year’s surge. In Michigan, where over 3000 cases have been reported, authorities suspect contaminated lettuce as the source. Previous outbreaks have been linked to leafy greens, bagged salad mixes, fresh basil, cilantro, raspberries, snow peas, and green onions. If you have bought any of these items recently, you should be extra careful.
Why Store-Bought Produce is Vulnerable
Modern produce supply chains are long and layered. Crops are often grown in one region, processed and bagged in another, then distributed to grocery stores across the country. By the time a head of lettuce reaches your cart, it may have passed through growers, packers, distributors, and retailers, each one a potential point of contamination.
Add to that the recent cuts to national food-safety surveillance (the CDC’s FoodNet system which used to actively track cyclospora across ten states, now monitors just two pathogens) and it’s easy to see why the country’s food-tracing system is more strained that it used to be. None of this means that all store-bought produce is unsafe to eat, but it does mean the chain between farm and fridge is long and increasingly difficult to monitor closely.
How Growing Your Own Food Reduces Your Risk
Your home vegetable garden shortens the food supply chain to just a few steps. Homegrown produce allows you to control the water source, soil, handling, and harvest-to-table time. This cuts out the long commercial chain where contamination usually occurs.
Many of the vegetables affected by this current parasitic outbreak are also very easy to grow at home. Just follow some common-sense guidelines.
- Always use clean irrigation water for food crops
- Wash your hands before and after handling produce
- Scrub firm vegetables with a produce brush
- Never use untreated manure or runoff
- Rinse harvested greens thoroughly
Heirloom Varieties Worth Planting This Season
Even though July is one of the warmest months, you can still grow nutritious leafy greens like lettuce and spinach. Try heat tolerant varieties like Buttercrunch or All the Year Round Lettuce, and New Zealand Spinach. You can provide a shade cloth if you are growing outdoors, or these varieties grow well in indoor hydroponic systems. Herbs like Basil and Cilantro are easy to grow indoors when it’s too hot outside. Try Patio Pride or Sugar Ann Dwarf Peas in containers in a cooler part of your patio or even indoors. Tokyo Long White Bunching Onions will give you fresh, crisp green onions whether grown indoors or outdoors.
What Other Steps Can Reduce the Odds of Getting Sick?
In addition to growing your own food, there are things you can do to minimize the risk of contracting illness from any produce. Always wash your produce well before eating, cut away any damaged portions, and store it in the refrigerator as soon as possible.
Remember, just because your salad kit says pre-washed, that does not mean it is parasite-free. Michigan health officials have explicitly warned that rewashing bagged lettuce at home is unlikely to remove cyclospora, since the parasite is resistant to routine disinfection and isn’t reliably eliminated by rinsing alone. Buying whole head lettuce is a better choice than pre-chopped bags, because you can discard the outer few layers and thoroughly wash the inner leaves.
Washing is an important step, especially when paired with proper handling or cooking. But remember none of this is a guarantee. Cooking produce to 158°F or higher kills the parasite if you want extra assurance. And as always, wash your hands before handling food!
Outbreaks like this one are a wake-up call, but they are also an opportunity. When you grow your own lettuce, herbs, and peas from heirloom seed, you know exactly where your food has been. There’s no mystery supply chain, no unmarked distribution center, no guessing game about what state it traveled through before it hit your kitchen. Combined with a few simple safe-growing habits, a backyard garden puts the control back in your hands, literally. This season is as good a time as any to trade the produce aisle for your own soil, and we’ve got the heirloom, non-GMO, open-pollinated seeds to help you start.
