Fertilising a Geranium × magnificum
To maintain the vigorous growth and lush flowering of Geranium × magnificum, fertilizing is essential. It is beneficial to apply a balanced, slow-release fertilizer at the onset of the growing season in early spring. This will provide a steady supply of nutrients as the plant begins to put forth new foliage and prepare for its bloom period. A second application, just before the flowering months of May, can further bolster the plant's performance, ensuring that the blue and purple hues of its blooms are vivid and long-lasting.
For this species, which thrives in both sun and partial shade, ensure that the soil remains well-drained and that the fertilizer is evenly distributed around the base of the plant, avoiding direct contact with the foliage to prevent burn. With proper fertilization, Geranium × magnificum will reward with a bushy, spreading display of vibrant color throughout its flowering months.