6" tall x 10-15" wide. After many years of testing and selection, 'Dark Violet' was finally introduced in 2013. This long-blooming native hybrid Skullcap covers itself with a profusion of dark violet flowers held on short compact flower spikes. Blooming most of the summer, its neat mounding habit makes 'Dark Violet' a perfect choice to plant along the edges of hot, sunny paths. The hotter and harsher the growing conditions, the better it performs. Well-drained, low fertility soil. Plant with Salvia greggii, Coreopsis, Lavender.