Fertilising a Hamamelis × intermedia 'Arnold Promise'
To ensure that Hamamelis × intermedia 'Arnold Promise' thrives and displays its vivid yellow blossoms to full effect, appropriate fertilization is required. It is recommended to fertilize this shrub once in early spring and again in mid-summer to support its growth cycle and rich foliage that later turns a spectacular red and yellow in the autumn.
Apply a balanced, slow-release fertilizer formulated for shrubs and trees to the soil around the base of the plant. This type of fertilizer promotes steady growth and flowering without the risk of over-feeding, which can be detrimental. As the shrub prefers well-drained soils, ensure that the fertilizer is well-integrated into the soil and watered in, to aid in nutrient absorption and prevent root burn. Regular fertilization will contribute to the robust health and longevity of the plant.