Fertilising a Hydrangea anomala subsp. petiolaris
To support the vigorous growth and lush flowering of Hydrangea anomala subsp. petiolaris, a consistent fertilization routine is recommended. As this species has a high demand for nutrients, particularly during the growing season, applying a balanced, slow-release fertilizer in early spring can be very beneficial. This initial feeding will prepare the plant for the burst of growth and development that occurs as the weather warms.
An additional application of fertilizer should be considered in late spring or early summer, just before the onset of the flowering period in June and July. This ensures that the plant has the necessary nutrients to produce its stunning white blooms. It is crucial, however, to avoid over-fertilization, as this can lead to excessive foliage growth at the expense of flower production. Always water thoroughly after fertilizing to help distribute the nutrients into the soil.