(2) Mesic Prairie drawing by Henrietta Tweedie from Wildflowers of the Great Lakes Region, with permission from the artist As you leave the savanna you enter the moderately moist (mesic) prairie with its impressive array of forbs flowering from May to October. Look for deeply-lobed compass plant leaves with edges pointing north and south and notice large heart-shaped or "elephant ear" leaves of prairie dock. Stiff, rough leaves enable these plants to withstand seasonal drought. Their mid-summer yellow flowers tower on eight foot stems.