When it comes to boosting calcium intake, most people think of dairy products first. However, some lesser-known vegetables offer a surprising amount of calcium—plus the bonus of being naturally resistant to pests, meaning they are often grown with little or no pesticide use. If you spot these veggies during your market run this summer, don’t hesitate to add them to your basket.

1. Amaranth Greens (Also Known as Red Spinach)

Amaranth greens are an underrated source of calcium and iron. They’re naturally hardy and rarely attacked by pests, which means farmers use fewer chemicals on them. In addition to supporting strong bones, they’re great for boosting hemoglobin levels and improving digestion.

2. Sweet Potato Leaves

Often overlooked, sweet potato leaves are not only edible but packed with nutrients, especially calcium and vitamin A. They grow vigorously and tend to resist pests, making them one of the cleanest leafy greens available. Their mildly sweet flavor works well in stir-fries and soups.

3. Moringa Leaves (Drumstick Tree Leaves)

Dubbed a “miracle tree” in many cultures, moringa leaves are incredibly rich in calcium, vitamin C, and antioxidants. Because of their bitter taste, pests usually avoid them—another reason they’re usually pesticide-free. Consuming them regularly can support bone health, reduce inflammation, and enhance immunity.