Chionodoxa (Glory of the Snow)
Chionodoxa has blue star-shaped flowers that appear in late March and April clustered into a loose spike on a stem whose total length is no more than about 1 5 cm (6 in). Several flower stems will be produced by a large bulb. Depth of planting is about 7 cm (3 in) deep. Very hardy, they can be left in place for many years, and do best in a sunny place, and well-drained soil.
Muscari (Grape Hyacinth)
Muscari bulbs are easy to grow in ordinary, well-drained soil. The spikes of small, bell-shaped flowers, narrowed at each end, are responsible for the plant’s common name. The best-known form is Muscari botryoides which produces deep sky-blue blooms from March to May. Muscari botryoides ‘Album’ is a fragrant white form. All types grow approximately 20 cm (8 in) tail.
Scilla (Blue Bells)
Scilla sibirica (Siberian Squill) is a delightful bulb that produces brilliant blue open-bell-shaped flowers with six strap-shaped petals in March. Another attractive species is Scilla bifolia, which blooms in February, and has deep blue flowers. Both grow 15 cm (6 in) tall. S. tuber-geniana, almost white, has a deep blue central stripe. Scillas will grow in shade as well as sun, and do not dislike heavy soil.