The Zinnia's are Back

I have an area in the backyard I affectionately call the "B."  I planted zinnias from seed one year and each year since they have just re-seeded themselves; filling in the "B" with a wonderful carpet of zinnias.  I have a thing for zinnias.  I just love their brightness and their rainbow of wonderful colors. We have a history!  This year they have come back with a vengeance.