Seeds from Salvia forsskaolii or Indigo Woodland Sage. The large, almost triangular leaves of this Bulgarian native make a striking base for the long spires of white streaked, violet blue blooms. Robust flower stems arch gracefully above the basal foliage, which lies close to the ground. Drought tolerant, reliable once established, and generally pest and disease free, they combine an array of flowers and aromatic foliage in many different sizes, shapes, and hues. Zones 5 to 8.