Thousands of tulips are in bloom in Pella, and crowds are already converging to take in the spring tradition. According to the Pella Community Services department, there are several flowers both hitting their prime and still on the way. The Pella Police Department reminds both residents and visitors that traffic, especially downtown and near parks, will be higher than normal for the next several weeks through the 89th Tulip Time Festival May 2nd through the 4th.