Veronicastrum vir. ‘Lavender Towers’ Culver's Root Description An elegant native plant found in meadows throughout eastern North America, this stately flower performs best in well drained soil and full to partial sun. Long spikes of pale purple flowers appear in mid summer. A great cut flower. Characteristics Hardiness Zone: 3-10 Light requirements: Sun/Part Sun Height: 4-5' Native: Yes Sizes & Prices Size: 2 Yr $13.98 Other Information All Culver's Root Culver's Root Veronicastrum vir. 'Lavender Towers' Zone: 3-10 Sun/Part Sun HT: 4-5' Culver's Physic Veronicastrum virginicum Zone: 3-8 Sun/Part Sun HT: 3-6'