Swamp sage is actually very tolerant of dry to average conditions. This special sage from South America is surprisingly cold hardy and is a large reliable perennial. 6′ tall wand-like stems terminate in rows of sky blue flowers. There is a white nectary guide on the lower lip. Forms semi-woody clumps that expand at a moderate rate to about 2′ across. Freezes to the ground below about 20ºF but is root hardy near 0ºF. Rich to average soil with regular irrigation through summer. Full sun to very light shade. Blooms appear from early June to early autumn. Excellent in the back of a border or swimming in a sea of large ornamental grass. The medium green leaves are elongated with indentation and rise up along the stem. One of the easiest and showiest of sages. Nice cut flower. Moderate deer resistance.