As humans, we need water, food and sleep. OK — more than that. We also need a good immune system, among other things. But thanks to plants and the sun, we as humans can eat, breathe and live.

Gardeners are often told how important nutrients are to plants. But what is a nutrient, actually? “Nutrients are the chemical elements that plants need to build their tissues and operate their life ...

Humans make stuff up—including the names and classifications of living things. But those categories are still useful. In this episode of Crash Course Botany, we’ll explore how taxonomy and systematics ...