By: Lauren Bryan
Reviewed by a registered dietitian.
When it comes to eating for long-term health, vegetables are one of the most powerful tools we have. They provide vitamins, minerals, antioxidants, fiber, and other compounds that help reduce inflammation, lower the risk of chronic disease, and support brain and body function.1 But it’s not just about eating more vegetables, it’s about eating a variety of them, and ideally choosing produce that’s in season. By embracing variety and seasonality, you can nourish your body more effectively, support brain health, and even enjoy fresher, better-tasting meals.
Why Variety Matters
Each vegetable brings something unique to the table. No single food contains all the nutrients your body needs, which is why diversity is key.1 For example:
- Leafy greens like spinach and kale are high in vitamin K, folate, and lutein, which support bone and eye health.
- Orange and red vegetables such as carrots, sweet potatoes, and bell peppers are rich in beta-carotene and vitamin C, supporting immunity and vision.
- Cruciferous vegetables including broccoli, cauliflower, and Brussels sprouts contain compounds like sulforaphane, linked to detoxification and cancer protection.
- Legumes such as beans, peas, and lentils provide fiber and plant-based protein, supporting gut health and steady energy.
Eating the rainbow not only makes your plate look vibrant but also ensures you’re covering a broader nutritional spectrum.
How Seasonality Shapes Our Plate
Seasonal eating simply means focusing on produce that naturally grows during specific times of the year in your region. Choosing in-season foods has many benefits 2:
- Better taste and freshness – Strawberries in the summer and squash in the fall often taste sweeter and more flavorful than out-of-season options.
- Nutrient density – Freshly harvested produce retains more vitamins and minerals compared to fruits and vegetables that travel long distances or sit in storage.
- Environmental benefits – Seasonal and local foods require fewer resources to ship and preserve.
- Cost savings – In-season produce is typically more affordable due to higher availability.
USDA provides a great seasonal produce guide to guide you through your next grocery run.3 Taking advantage of seasonal produce allows for fresh taste and maximum nutritional benefits. The more time that passes between when produce is harvested and when it’s eaten, the more its vitamins and antioxidants may decline.2 Don’t fear if your favorite vegetable isn’t in season either. They have found that frozen foods flash freeze the nutrients into the foods to lock it inside right after harvest.2
Geography and Diet Diversity
Where you live also impacts what produce is available to you. Someone in Florida may enjoy year-round citrus, while those in the Midwest might rely more on root vegetables during the colder months.4 Exploring farmers’ markets, local food co-ops, or joining a community-supported agriculture (CSA) program can expose you to new vegetables you might not normally pick up at the grocery store.5
Even when fresh produce is limited, frozen or canned vegetables are still nutritious options that help maintain variety in your diet. Exploring vegetables used in global cuisines, like bok choy in Asian cooking, eggplant in Mediterranean dishes, or plantains in Latin American meals, can also expand your plate and palate.
Simple Tips to Add More Variety
Incorporating more vegetables into your routine doesn’t have to feel overwhelming. Here are some simple ways to keep it exciting 6:
- Eat the rainbow – Try to have at least two or three different colors of vegetables on your plate each day.
- Experiment weekly – Commit to trying one new vegetable each week, especially one that’s in season.
- Vary preparation methods – Roasting, steaming, grilling, or eating raw keeps vegetables interesting and flavorful.
- Borrow from global cuisines – Explore dishes from different cultures that highlight vegetables in new and creative ways.
- Batch-prep veggie bases – Make soups, stir-fries, or grain bowls ahead of time to easily incorporate a mix of fresh vegetables into your meals.
Explore the Rainbow
Eating a wide variety of vegetables throughout the year helps provide the full spectrum of nutrients your body and brain need to thrive. By choosing produce that’s in season, you’ll enjoy fresher flavors, save money, and connect more closely with the natural rhythms of food. Diversity and seasonality on your plate don’t just support your health, they make meals more enjoyable and sustainable. Eating with the seasons reminds us that food isn’t just fuel. It’s a way to stay in tune with our communities and our own well-being.
References:
- Harvard T.H. Chan School of Public Health. Vegetables and fruits. The Nutrition Source. Published n.d.. https://nutritionsource.hsph.harvard.edu/what-should-you-eat/vegetables-and-fruits/
- Merschel M. The ripe stuff: Why seasonal eating can be a healthy delight. American Heart Association News. Published July 12, 2024. https://www.heart.org/en/news/2024/07/12/why-seasonal-eating-can-be-a-healthy-delight
- U.S. Department of Agriculture, SNAP-Ed Connection. Seasonal Produce Guide. SNAP-Ed. Published n.d.. https://snaped.fns.usda.gov/resources/nutrition-education-materials/seasonal-produce-guide
- Gergel SE, Powell B, Baudron F, et al. Conceptual Links between Landscape Diversity and Diet Diversity: A Roadmap for Transdisciplinary Research. Bioscience. 2020;70(6):563-575. doi:10.1093/biosci/biaa048
- U.S. Department of Agriculture, National Agricultural Library. Community Supported Agriculture. Published n.d.. https://www.nal.usda.gov/farms-and-agricultural-production-systems/community-supported-agriculture
- UW YoCNP. Eat the Rainbow. UW YoCNP Newsletter. Published June 2025. https://uwyocnp.org/newsletters/eat-the-rainbow/