The genus Capsicum, comprising species native across Central and South America, belongs to the Solanaceae family alongside tomatoes, eggplant, and potatoes — a reminder of how much of the modern vegetable garden descends from a single corner of the New World. What unites the genus is capsaicin, the compound responsible for the heat that made peppers central to cuisines on every continent within a century of European contact. Through selective breeding, some cultivars have been bred entirely free of it; others have been pushed to extremes that have no culinary utility beyond competition.

Peppers are accommodating garden plants. They prefer full sun and well-drained soil, tolerate drought and heat with equanimity, and resist deer with the same capsaicin that gives hot varieties their reputation. Their compact habit suits container growing well, and the colorful, persistent fruits of ornamental cultivars offer months of visual interest even after the growing season ends. Songbirds, apparently unaffected by capsaicin, are drawn to the fruit and help disperse seeds in the wild — a relationship that shaped the plant long before gardeners arrived.