Chionodoxa forbesii – Glory-of-the-Snow is an easy to grow bulb that naturalizes quite well. It bears short-stemmed starry blue flowers with white centers (in early spring) over green foliage. This native of Turkey is deer resistant and a good choice for planting under deciduous trees in a woodland garden. Chionodoxa forbesii grows 4-8″ tall and is hardy to zone 3.
Eranthis hyemalis – Winter Aconite is a tuberous perennial with bright yellow flowers nestled in a ruffle of dissected green leaves. This native of Europe forms little colonies and blooms quite early, about the same time as Snowdrops (Galanthus). Winter Aconite goes dormant by late spring and the tubers should be soaked overnight before planting. Grows 2-3″ high. Hardy to zone 4.
Hyacinthoides non-scripta (syn. Scilla nutans / Endymion non-scriptus) – The English Bluebell has long been a garden favourite with its fragrant bell-shaped flowers (which also come in pink and white forms). This is a good choice for naturalizing (be warned, it can become aggressive) under leggy deciduous shrubs. Grows 8-16″ tall and blooms April-June. Hardy to zone 4.
Crocus chrysanthus ‘Goldilocks’ – This cultivar of Snow Crocus features bright yellow blooms with light bronzing at the outside base of the petals. This corm naturalizes well but does need some sun for the flowers to open. ‘Goldilocks’ blooms from late winter to early spring over narrow green leaves, with a contrasting central white stripe. Grows 4-6″ tall and is hardy to zone 4.
Scilla siberica ‘Spring Beauty’ (syn. ‘Atrocaerulea’) – The preferred cultivar of Siberian Squill with slightly larger nodding bell-shaped blooms that last longer and are a deeper blue than the species. It has distinct purple-skinned bulbs and also naturalizes well by self-seeding. ‘Spring Beauty’ blooms in March-April and is a good companion for yellow daffodils. Grows 8″ high. Zone 5.