When do I plant spring-blooming bulbs?

Question:

When do I plant spring-blooming bulbs?

Answer:

October is the ideal time to plant spring-flowering bulbs in Iowa. This allows bulbs to establish and develop good roots before winter. Planting bulbs too early in the season in September when soil temperatures have not yet cooled may cause some bulbs like tulips to emerge in the fall. Procrastinators can plant spring-flowering bulbs as late as December if the ground remains unfrozen.

In Iowa, bulb planting is best done in October