Prunus americana (Wild Plum)
Family: Rosaceae (Rose)
Prunus americana produces flowers before leaves emerge, resulting in thickets of fragrant white blooms. It is one of the first shrubs to flower in the spring. Branches often have short lateral twigs, resembling large blunt thorns.

Vegetation zone:  Plains, Foothills
Time of bloom:  April - May
Origin:  Native
Eastern Colorado Wildflowers