Although most gardeners are familiar with bulbs that bloom in spring (such as daffodils) and summer (such as cannas), numerous wonderful bulbs for autumn are underused. Many send up leaves in spring, then go dormant by summer and bloom in autumn. Remember or mark where you planted them! Here are some good autumn-blooming choices. Autumn crocus, including Crocus speciosus and a number of other species, are great fall bloomers. C. speciosus has violet-blue flowers and grows about 6 inches tall. It naturalizes well and has several available cultivars. It is hardy in Zones 3-8. Another popular autumn-blooming crocus is saffron (C. sativus). It has lilac-purple flowers and grows about 2 inches tall. It is hardy in Zones 5-8. ? Colchicum (Colchicum) are sometimes called autumn crocus but isn’t a crocus at all, though the two plants do share a strong resemblance. Several species and cultivars are available. Water lily is one of the more common; it has double pinkish flowers on 5-inch-tall plants. The Giant has large violet-pink flowers on 8-inch-tall plants. Most colchicums are hardy in Zones 4-9. Lily-of-the-field (Sternbergia lutea) produces crocuslike yellow flowers in autumn. The plant grows about 6 inches tall and is hardy in Zones 7-9. Hardy cyclamen (Cyclamen hederifolium) has wonderful shield-shape leaves that are frequently patterned or mottled with silver or light green. It has pink blooms that are often fragrant. The plants grow 5 inches tall and are hardy in Zones 6-9 and in protected sites in Zone 5.