Fertilising a Buxus sempervirens
Fertilizing this species is crucial to maintain its vibrant green foliage throughout the seasons. To support the dense and lush appearance of the boxwood ball, it is recommended to fertilize in early spring, just before the start of the growth period. A balanced, slow-release fertilizer designed for evergreens is ideal, providing a steady supply of nutrients over several months.
Apply the fertilizer according to the manufacturer's instructions, ensuring it is distributed evenly around the base of the plant. This will encourage a healthy growth rate and support the plant's winter hardiness, fortifying it against extreme temperatures as low as -17.8°C. For optimal results, a second application in mid-summer can help sustain the species' growth and vigor.