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On a trip to Mt. Lofty Botanical Gardens in South Australia, rounding a corner we were struck by the intense cobalt blue flowers of Salvia corrugata. It was growing beneath shade giving trees at about 1.5m in height. In full sun it rounds out at 1m in height and is more compact in its growth habit. The foliage is very intriguing and if you are tactile it is a must to run fingers down the deep olive 'corrugated' leaves with felty bronze silver underneath. Unfortunately it is frost tender.