Salvia Mystic Spires Blue, compact Indigo Spires Sage, an attractive compact perennial sage that has upright growth to 2 feet tall with dark gray-green leaves and purple-blue flowers from spring through fall. Plant in full sun in well-drained soil and irrigate regularly to occasionally. Listed as hardy to USDA zone 7 (0-10 ° F) This plant is a "dwarf form" of the venerable Salvia 'Indigo Spires', a hybrid between two large mexican sages, Salvia longispicata and S. farinacea that was discovered as a chance hybrid seedling at the Huntington Botanic Garden in the 1970's. Salvia Mystic Spires Blue, comes out of the Ball FloraPlant breeding program in Illinois and is an irradiation induced sport of 'Indigo Spires'. The irradiation occurred on May 20, 2003 and this cultivar was selected in August 2003 by Scott Trees at a test facility in Arroyo Grande, Calif. This new cultivar is more compact because of shorter internodes and has smaller leaves than Salvia 'Indigo Spires'.