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 Salvia Wesuwe $6.50 Add to cart Kirengeshoma palmatum $9.00 Add to cart Allium ‘Millenium’ $7.50 Add to cart Geranium ‘Bevan’s Variety’ $7.00 Add to cart