Salvia nemorosa 'Salvatore Deep Blue' adds a captivating vertical element to border fronts with its upright flower spikes. Adorned with tiny, indigo blue flowers densely packed along dark stems, this variety attracts a flurry of pollinating insects with its nectar-rich blooms. Ideal for free-draining borders, it blends seamlessly into cottage garden arrangements. Expect a height of 35cm (14") and a spread of 30cm (12").