Airy spikes of white flowers rise above fine-textured stems from spring through fall, drawing butterflies and hummingbirds without demanding much in return. Steffi White performs in heat and drought once it settles in, asking only for decent drainage and a sunny spot.

Plant it where you need vertical movement among lower growers, or use it to soften the hard edges of stone and pavers. It's lean enough to tuck into tight spaces but tall enough to matter in the landscape.