Oxalis hirta ( Sorrel )

O. hirta has sessile leaves, hairy and pale green and has funnel shaped blooms in white, pink or purple. A genus of about 800 species. Many are tuberous, the leaves are usually three-lobed and clover-like. Both the leaves and flowers […]

Oxalis enneaphylla ( Rosea Sorrel )

Clumps of umbrella-like, somewhat fleshy, hairy, grey-blue leaves, consisting of 9 to 20 narrowly pleated, oblong leaflets. Flowers are light purple-pink and funnel-shaped. Nice companion plant in containers or along shady, moist walk that receives morning sun. Does best where […]

Oxalis cernua ( Sorrel )

O. cernua has leaves with long hairs and blooms in 8 to 10 golden yellow flowers in an umbel. Oxalis is a genus of about 800 species. Many are tuberous, the leaves are usually three-lobed and clover-like. Both the leaves […]

Oxalis adenophylla ( Shamrock )

O. adenophylla, has a bulbous rootstock that has crinkled grey-green, fan shaped foliage with goblet shaped, creamy pink flowers in late spring. Oxalis is a genus of about 800 species. Many are tuberous, the leaves are usually three-lobed and clover-like. […]

Ostrya virginiana ( Glandulosa Ironwood )

Named for its glandular hairy shoots and leaves. This lovely Eastern United States native is related to the heath family and has drooping, white, midsummer hop-like fruits. Fall color is yellow, red, or purple. Soil must be well-drained and acid. […]

Osteospermum jucundum ( Compact Osteospermum )

This perennial is a neat compact mass, 4 to 8 inches tall, which spreads by surface rhizomes, has 3 to 4 inch long grey-green leaves with linear-shaped, toothed margins. Long stalks bear solitary flowerheads 2 inches across with mauve-pink ray […]

Osteospermum jucundum ( African Daisy )

This is a showy, clump-forming perennial, which spreads by surface rhizomes, has 3 to 4 inch long grey-green leaves with linear-shaped, toothed margins. Long stalks bear solitary flowerheads 2 inches across with mauve-pink ray florets and central discs that age […]

Osmarea ( Osmarea )

This is a genus of evergreen shrubs with fragrant flowers that is similar to the Osmanthus. Leaves are oval, sometimes having small teeth or spines and range from a flat dull green to a glossy dark green. The late winter […]