Description Portulaca oleracea 'Balriorg', also known as Portulaca oleracea 'Rio Orange', is a prostrate, trailing, free-flowering annual that grows up to 6 inches (15 cm) tall with a spread of up to 12 inches (30 cm). The stems are clad with flat, fleshy, spatulate to ovate, succulent leaves. The leaves are medium green and up to 1.25 inches (3.1 cm) long. Flowers are orange, with five overlapping petals and up to 2 inches (5 cm) in diameter. When grown as an annual plant, flowers bloom continuously from spring to first fall frost. When grown in a greenhouse, flowers will bloom year-round. Flowers usually do not open on cloudy or rainy days.