Quick facts and care essentials
• Zones 1-24, 30-45
• Full sun or partial shade
• Regular watering during growth and bloom
Most crocuses bloom in late winter or early spring, bearing tubular, 1 1/2- to 3-inch-long flowers in a rainbow of colors. Others, including C. sativus (the saffron crocus) and C. speciosus, bloom in fall, with flowers rising from bare earth weeks or even days after planting.