Salvia guaranitica 'Black and Blue' is a striking perennial prized for its vivid cobalt-blue flowers with dramatic black calyces, blooming from midsummer through autumn. These tubular flowers rise above lush, aromatic green foliage, creating a bold and elegant display that attracts bees, butterflies, and hummingbirds. With its upright and slightly arching growth habit, this salvia adds height and vibrant color to any garden, making it a standout choice for borders, wildlife-friendly gardens, and large containers.
Height: 120–150 cm
Spread: 60–90 cm
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Salvia guaranitica 'Black and Blue' is a striking perennial prized for its vivid cobalt-blue flowers with dramatic black calyces, blooming from midsummer through autumn. These tubular flowers rise above lush, aromatic green foliage, creating a bold and elegant display that attracts bees, butterflies, and hummingbirds. With its upright and slightly arching growth habit, this salvia adds height and vibrant color to any garden, making it a standout choice for borders, wildlife-friendly gardens, and large containers.
Height: 120–150 cm
Spread: 60–90 cm
Plant Salvia guaranitica 'Black and Blue' in full sun to partial shade in well-drained, fertile soil. Water regularly, especially during dry periods, to maintain consistent moisture. Feed with a balanced fertiliser in spring to support healthy growth and abundant flowering. Prune old stems in late winter or early spring, cutting them back to just above the base before new growth appears. This helps protect the plant over winter and encourages vigorous regrowth for the growing season. Mulch in autumn to provide additional winter protection in cooler climates.
This dramatic salvia is perfect for adding height and vibrant colour to mixed borders and wildlife-friendly planting schemes. Pair it with complementary plants like rudbeckias, ornamental grasses, or yellow heleniums for a striking contrast. It also works beautifully alongside other salvias or as a focal point in large containers, where its rich blue flowers can be appreciated up close.
Long flowering period from midsummer to autumn.
Pollinator-friendly; attracts bees, butterflies, and hummingbirds.
Not fully frost-hardy; may need protection in colder regions.
Pet-safe but best kept out of reach to prevent accidental nibbling.