HARDINESS: Zones 7-10
MATURE HEIGHT AND SPREAD: 3' x 5' (depends on cultivar)
CLASSIFICATION: Herbaceous perennial
LANDSCAPE USE: Long lasting color in perennial border or accent plant
CHARACTERISTICS: This perennial does best in sun or light shade. It is
a butterfly and hummingbird plant that blooms for a long period. The plant
features cuttable flower spikes of light blue, dark blue or purple with
gray-green foliage. Commonly available cultivars include 'Argentine Sky',
'Sapphire Sage' and 'Purple Majesty'.
Photo: Stephen G.
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