A gorgeous slow-growing vine, Hoya, or wax plant, thrives in bright indirect light, but does almost as well in darker locations. Hoya comes in either flat-leaved or crinkled- leaved forms and will occasionally produce clusters of highly fragrant white flowers. Flat-leaved Hoya also comes in solid green or variegated cream-and-green leaves. You can train a Hoya up a trellis or totem or allow it to trail over the edge of a pot or urn. Water only when the soil feels dry to the touch.