Spikes of dark purple-blue flowers. I can't think of anything bad to say about this plant. Good upright growth habit, has good colour, not bothered by insects or hot, dry weather. Best in full sun.
Have been admiring it in past years in friends' gardens, finally got around to growing it ourselves in 2000.
Grew 24" tall for us, spread of 8" to10".
Glen's score: 10 of 10.
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