Planting in the Fall

• In order to make sure that your spring flowers bloom in the spring, plant them sometime in the fall. Spring blooming bulbs like tulips, crocuses, narcissus, cyclamens, lilies, hyacinths, snowdrops, and daffodils should all be planted in the fall. In the northeast regions of the United States, it is best to begin planting spring- blooming bulbs in September before the ground starts to get hard and frozen. In the Midwest U.S. these types of bulbs should be planted sometime between the end of September and the end of November. The Pacific northwest coast and southern regions should plant between October and the beginning of December; the Gulf coast can plant through to the end of the year; and the coast of California should plant spring-blooming bulbs before mid-January.
  
  

Planting in the Spring

• You should plant bulbs such as achimenes, gladioli, alliums, calla lilies, dahlias, and cannas during the spring months. These bulbs all flower during the summer and will have ample time to grow properly only if they are planted in the middle of spring. You will have to wait until the ground is no longer hard and frozen in order to plant these types of bulbs. Otherwise there are no specific planting times based on region.
  
  

Planting in the Summer

• Bulbs that bloom at the beginning of fall should be planted at the end of the summer in August. Bulbs such as late crocus and fall and winter cyclamen should both be planted in the late summer.