Often called pork and beans or jellybean plant, Sedum x rubrotinctum is a 6- to 8-inch low-mounding groundcover with fat little leaves that go from bright green to red. Suzman calls it “very easy and reliable.” The glowing hues of Sedum rupestre ‘Angelina’ have made it a must-have for containers and perennial borders, with needlelike chartreuse to bright-gold leaves usually tipped with orange. greatgardenplants.com
For unusual muted shades, landscape designer Stephen Suzman likes to use Echeveria ‘Afterglow’ (powdery pinkish lavender) and E. ‘Perle von Nürnberg’, pictured (grayish brown with a pinkish mauve tinge). Both form rosettes of overlapping leaves, 1 foot across for ‘Afterglow’, 5 to 6 inches for ‘Perle von Nürnberg’. provenwinners.com
A long bloomer, from midsummer through September, 2- to 3-foot Agastache ‘Black Adder’ “has the always-pleasant lavender-purple color that goes so well ‘out East.’” A magnet for butterflies and other nectar-seeking insects, the foliage and flowers also release a minty fragrance when brushed against.