“The beautiful lavender spires of Hoary Vervain make a distinctive statement in the late summer landscape. Blooming for 4 – 6 weeks, this upright perennial forms attractive vertical clumps with groups of long, narrow flowering spikes. An important source of nectar, Hoary Vervain is a desirable component of butterfly gardens, and the leaves are a host food for the Common Buckeye caterpillar and others. Very drought resistant, and non-aggressive, it is easily grown in any well-drained soil in full sun.”