Calibrachoa spreads in a flat mound, spilling soft color over pot edges from May through fall. The tiny blooms cover the plant so thickly you'll barely see leaves underneath, making it one of the densest trailers we stock for window boxes and hanging planters.

Full sun and regular water keep it wired tight. Deadheading isn't necessary—it cleans itself as it flowers. Expect to replant when the heat peaks in midsummer unless you can keep soil consistently moist.