OXALIS. Nearly worldwide. In addition to some much-despised weeds, this group includes a broad assortment of highly ornamental perennials. They grow from underground rhizomes, which may develop bulbous structures. Most have clover-like leaves and relatively large 5-petalled flowers of white, pink to red, purple or yellow. Many are suitable for container and rock garden use. Sun, most soils, moderate watering during growth and bloom, except as noted. Those which die down at some point may go completely dry for the dormant season, though most will tolerate moisture at this time. Hardy to 20oF or below, less as indicated (where known).
oregana. Redwood sorrel. An evergreen, carpeting native of our coastal redwoods, grown primarily as a foliage plant and ground cover. Its large (2" or more), broadly parted leaves are marked with light green or white. In spring large, white to light pink blossoms with darker veining are carried above the foliage on individual stems. Our latest selection, ‘Forest Lights’, has unusually dark green leaves, with bright purplish red undersides and stalks. Shade, constant moisture. 0-10oF.