The virgin prairie is in Roscoe, MN located approximately 16 miles southeast from St. John's. There have been many helpful insights that this study has provided the Arboretum with already. Primarily, it has shown how fire,although an excellent means of prairie maintenance in nature, can be detrimental to the insects that are overwintering on the dead stalks of grass. By making this observation, the prairie has been divided into three different parts which are burned in a three year cycle. Below is a listing of several prairie plants found in the Saint John's Arboretum.
Photos are available for underlined butterfly names.