A crocus is a well loved perennial flower that grows that grows to be 3 to 6 inches tall with yellow, purple, lavender and white cup shaped blooms. A member of the iris family, the crocus is a hardy plant that commonly blooms in the spring, with the exception of a few species of crocus that bloom in the fall.
The crocus plant has over 80 species, about 30 of which are raised commercially. The most commonly planted crocus is the Dutch Crocus, also known as the crocus vernus, which also has the largest bloom. Other common species of crocus are crocus chrysanthus, which is one of the first to bloom in late winter or early spring, crocus sieberi, which is also fairly short and blooms very early, and the crocus tommasinianus, another early bloomer that comes in various shades of purple.
Crocuses can be planted both indoors and outdoors, in either flower beds, borders or containers. Crocuses do well with full exposure to sun and can grow in poor to average soils, if the soil is well drained.