Dutch crocus. Blooming in early spring, Flower Record is the center of attention; the intense purple flowers can be seen from great distance. Crocus is extremely cold hardy and one of the earliest to bloom in spring. Once established, they are care-free, multiply over the years and flower every spring. Crocus will naturalize readily on the edge of the property, in wooded areas or in the garden border. Bulb size: 9 cm.