Fertilising a Perovskia atriplicifolia 'Blue Spire'
To support the robust growth and enhance the vibrant blue and purple hues of its blooms, Perovskia atriplicifolia 'Blue Spire' benefits from regular fertilization. A balanced fertilizer should be applied in early spring as new growth appears, ensuring nutrients are available for the developing foliage and stems. Given its preference for well-drained soils, a slow-release granular fertilizer works well, providing a steady supply of nutrition throughout the growing season.
Further feeding is generally not necessary, as this species is adapted to thrive with minimal care. Over-fertilization should be avoided to prevent excessive leaf growth at the expense of flowering. With the right fertilization regimen, this plant will exhibit its characteristic aromatic foliage and striking flower spikes from midsummer to early autumn, adding both visual and sensory appeal to the garden.