Fertilising a Achillea millefolium 'Red Velvet'
To ensure the robust growth and vibrant red blossoms of Achillea millefolium 'Red Velvet', it is important to provide adequate nutrition. Fertilization should be carried out twice during the growing season—once in early spring as new growth appears and again as the first flush of flowers begins to fade, typically in late spring or early summer. A balanced, slow-release fertilizer is ideal for this species, as it steadily provides nutrients without overwhelming the plant.
With its preference for well-drained soils, 'Red Velvet' is tolerant of many soil types, though it's essential to avoid over-fertilizing to prevent excessive leaf growth at the expense of flower production. A moderate approach to fertilizing will support the upright growth habit and the plant's overall health, ensuring a showy display of color throughout the summer.