Plectranthus amboinicus (Mexican mint, Indian borage)

Cannas bear broad, smooth paddle-like leaves reminiscent of banana plants. The oversize leaves make it easy to create dramatic combinations with other, more finely textured plants. Each stout, fleshy stem is topped with attractive spires of brightly colored flowers. Cultivars vary widely in height, foliage, and bloom.

From May to frost, whatever the temperature, this plant's creamy yellow markings do not fade. It looks good in containers or in garden beds, and you can use it in the foreground or as a focal point in distant plantings. Variegated tapioca attains a height and width of 3 to 4 feet. It is normally grown as an annual, but can be overwintered indoors. -Allan Armitage, Plant picks, Fine Gardening issue #121

The leaves of 'Green Gold' are predominantly silver with deep green veining. New leaves are edged in burgundy. The silver color brightens up shady areas.  'Green Gold' grows vigorously and harmonizes well with other shade plants. -Rita Randolph, Rex begonias, Fine Gardening issue #120

One of the hardiest palms, Chinese windmill palm has single stems with large, 4-foot-wide fans of sword-like leaves. It produces large plumes of yellow flowers in early summer; the flowers of female plants transform into bluish-black fruits. Chinese windmill palms may be shoot-hardy to Zone 6 if protected with 10 inches of mulch. With their rich fans and handsome habits, they make attractive specimens for formal outdoor spaces. These evergreen palms are native to the mountains and temperate regions of subtropical Asia. Plants can grow to 20 feet tall and 8 feet wide.