All varieties of russian sage have silver45tinted aromatic foliage that can survive even in dry chalky ground perovskia 39lacey blue39 can be distinguished by its compact habit which makes it particularly suitable for planting in patio containers placed in full sunlight the hardy shrub produces spikes of lavender coloured flowers which look undeniably striking when they rear their heads in the late summer height 50cm 4013963441 spread 60cm 4023903441