Seeds from Salvia azurea gradiflora Blue Sage or Pitcher Sage. This perennial is hardy in zones 4a to 9b. A native perennial plant is 2 to 5 feet tall. It is un branched, or with a few small stems near the azure blue inflorescence. Drought tolerant and suitable for xeroscaping. The central stem is ridged and slightly pubescent. The opposite leaves are grey green, narrowly lanceolate, with serrated or dentate margins toward their tips. Hummingbirds and butterflies love this one.