Snowdrops (Galanthus) bloom with tiny, intricate white flowers in early spring. This plant grows 6 to 8 inches tall from corms, which are thickened underground stems. Snowdrop is hardy down to USDA zone 3, where the temperature stays above -40 F when mulched. Without mulch, it only survives in USDA zones 4 to 7. Knowledge of how to plant this flower will keep it healthy and thriving all year round.
Choose an area with well-drained alkaline soil to plant the snowdrops in the fall. This plant prefers full sun or light shade and will do well under a deciduous tree.
Dig the soil to a depth of 8 to 10 inches with a spade, breaking up clumps and removing any rocks. Mix 1 inch of organic compost into the dirt to increase fertility and drainage.
Place snowdrop corms about 2 to 3 inches deep into the soil and 2 to 3 inches apart. Cover them with soil, tamp down and water deeply and slowly.
Place a 2-inch to 3-inch layer of mulch over the corms for winter protection. Keep the corms moist through the fall and into the winter.