Vernonia ‘Iron Butterfly’ $7.00 Size: 4” The fine texture of this tough perennial provides nice contrast in the landscape. Bright purple flowers emerge in late summer as many other perennials are finishing up their show. Light Needs: Out of stock Category: Perennial Related products Aster macrophyllus ‘Twilight’ $6.50 Add to cart Aruncus ‘Misty Lace’ $8.00 Add to cart Salvia Wesuwe $6.00 Add to cart Heuchera ‘Autumn Bride’ $6.50 Add to cart