A seedpod is the protective case that forms around a plant's seeds as they develop and ripen. After a flower is pollinated, the petals fall away and the seedpod grows in their place, like a natural package designed to keep seeds safe until they're ready to spread.

Different plants produce wildly different seedpods. Pea plants grow long green pods that snap open when squeezed. Milkweed produces pods that split to release seeds attached to silky parachutes. Maple trees make winged seedpods that helicopter through the air when they fall. Some seedpods are smooth and others are spiky; some pop open explosively while others simply dry out and crack.

You've probably seen seedpods without realizing it. String beans are seedpods. So are the papery cases on honesty plants that look like translucent coins. Even cotton bolls are seedpods, filled with fluffy fibers attached to seeds.

Understanding seedpods helps you see how plants protect and spread their offspring. When you find a dried seedpod on the ground and crack it open carefully, you'll discover the seeds inside, each one ready to become a whole new plant.