10 Lower-Residue Pesticide Picks

I am all in on organic produce, but sometimes a situation might not allow it. However, when you can’t buy organic, certain foods that have thick skin are more protected from pesticide residue. The Environmental Working Group (EWG) classifies the nonorganic produce carrying the lowest pesticide residue, based on its analysis of USDA data. Here are 10 of them, listed in order of where they land on EWG’s 2026 ranking. 

1. Pineapple — The thick, inedible exterior of the pineapple protects the part of the fruit you eat from pesticides, making it one of the lowest-residue picks. A 2025 study published in Foods examined 387 pineapple samples produced in major regions in China for 88 pesticides. Results found the interior fruit was protected by the rind and far below the risk threshold, meaning this fruit has one of the lowest pesticide residue risks. The pineapple tops the EWG 2026 Clean Fifteen list based on recent USDA data.
2. Sweet corn — Nestled in husk and silk that get discarded, sweet corn is protected from coming in contact with pesticides. Research shows that while the protective outer layers take on chemicals, once shucked, the interior kernels and cob have minimal pesticide residue. If you’re opting for frozen rather than fresh corn, know the kernels are heat-treated (blanched) before freezing, which can help further reduce the residue. Note to consider: Corn is one of the most widely GMO-modified foods.
3. Avocado — Avocados have a couple of built-in protective mechanisms. The thick skin shields the flesh that you eat. And the plant makes its own fungicide (persin), which is found in the leaves and the bark of the tree as well as the seeds. Avocados have consistently landed near the top of EWG’s Clean foods, among the produce with the lowest measurable residue.
4. Onion — We all know onions have layers, but you may not know that peeling the unappetizing papery outer skin before eating also removes most surface residue. Additionally, the plant’s naturally occurring sulfur compounds are thought to help defend against pests during growth, which may reduce the need for pesticides.
5. Sweet peas — The firm pea pod forms a protective barrier around the veggie that the residue must cross — keeping a majority of pesticides out. Like sweet corn, peas are shelled, washed, and blanched before freezing for added protection against pesticides.
6. Asparagus — This veggie is harvested young in a short window, sometimes just a 6- to 8-week harvest season for the crop. Since the veggie is picked so quickly, it reduces the overall exposure to pesticides. What’s more, a 2018 analysis by the FDA found 92 percent of asparagus sampled had no detectable pesticide residue.
7. Cabbage — The outer leaves of the cabbage are removed before the veggie even makes it to the grocery store, potentially reducing exposure to pesticides before you even start prepping it at home. Cabbage is part of the cruciferous family, which produces glucosinolates that defend against pests and can help reduce the need for growers to use harsh chemicals during growth.
8. Cauliflower — The edible white head of the cauliflower, called the curd, is protected by its outer leaves. Similar to cabbage, these leaves are typically removed before the veggie hits shelves. 
9. Bananas — The thick banana peel helps keep pesticides from getting onto the inner fruit. Many pesticides used to support growth are meant to stay on the peel and don’t cross over to the edible pulp.
10. Mushrooms — On a commercial scale, the fungus is grown in a controlled, indoor environment, like a grow house. Because mushrooms are more protected during their short life cycle, they require less spraying and therefore face fewer pesticides than produce grown outdoors.

The Takeaway

If you’re trying to cut pesticide exposure without relying on expensive organic produce, leaning on options with built-in barriers is an option. Washing or peeling fruits and veggies before eating them also helps reduce your exposure to pesticide residue. You don’t need to fear pesticides, as long as you’re making smart swaps. And remember, incorporating more fruits and vegetables into your diet, whether frozen or fresh, matters more than chasing a perfect list of pesticide-free foods.

Bottom Line

The growing conditions and structure of foods (like protective skins or leaves) help to lower pesticide residue on these picks, meaning you don’t necessarily need to opt for organic to avoid chemicals, according to USDA data. And keep in mind, while you will still be exposed to some amount of pesticides, this residue on conventional produce is regulated. These fresh (or frozen) fruits and veggies are nutrient-dense and will support your overall health.