Sparaxis, or harlequin flowers, grow best in Mediterranean climates, and bloom in large, flat blooms of many colors. The stems grow from 10 to 12 inches long, and bloom only once during a season.
Sparaxis blooms in early to late spring, so needs an early spring planting. According to Plant Biology, later plantings are possible, and lead to late summer blooms.
Gardeners should plant Sparaxis bulbs after all frost is passed. A good test for soil readiness is to dig up a handful of soil and squeeze it; soil that falls apart easily is ready for planting while soil that sticks together needs another week or two of drying before it's ready.