Vernonia ‘Iron Butterfly’ View cart “Penstemon ‘Blackbeard’” has been added to your cart. $7.00 Size: 4” This medium/large perennial is a must have for its fine texture and late summer blooms. Once established, it is very tolerant of hot, dry locations. Light Needs: Part Sun to Shade 25 in stock Vernonia 'Iron Butterfly' quantity Add to cart Category: Perennial Related products Aralia Sun King $9.00 Add to cart Salvia Wesuwe $7.00 Add to cart Amsonia ‘Blue Ice’ $6.50 Add to cart Geranium ‘Bevan’s Variety’ $8.00 Add to cart