Acidanthera (Acidanthera sp.) Soil: Average Light: Full sun to light shade Planting Depth: 2 inches Planting Distance: 5 inches Pleasing to the nose, as well as the eyes, acidanthera adds fragrance to your garden. This plant sends up creamy flowers with dark centers two months after the corms are planted. Each two-foot stem holds four or more buds that open one flower at a time. Comments In mild climates, leave corms in the ground over the winter. In cold areas, dig in fall and store in vermiculite at 35 to 45 degrees Fahrenheit.