Red begonias give you dependable color from planting through summer heat without the fuss of deadheading. They'll reach somewhere between 1 and 2 feet tall and fill out nicely in a gallon container, making them generous enough for a border or a mixed planter where you need reliable backbone.

Part sun is ideal—a spot that gets morning light or dappled afternoon shade keeps them flowering steadily without stress. Plant after the danger of cold passes, and they'll run until frost turns them back.