Do you find yourself torn between purple coneflower and black-eyed susan's? Which will it be? Fret not, for we are here to save the day with our Dynamic Duo! Because two is better than one. This is a match made in the stars, so why keep them apart?Don't worry if you don't see many black-eyed Susans in your first year after planting. These seeds usually bloom in their second year—and you'll be amazed when they explode with color that contrasts perfectly with your purple echinacea.