Fertilising a Buddleja davidii 'Pink Delight'
To ensure that this species thrives and produces its characteristic vibrant blooms, it is essential to fertilize in early spring, just as the new growth begins to emerge. A slow-release, balanced fertilizer is ideal, as it provides a steady supply of nutrients throughout the growing season. Apply according to the manufacturer's instructions, taking care to distribute evenly around the base of the plant without making direct contact with the stems or foliage.
For additional support during the peak blooming period in July and August, a midsummer application of a bloom booster fertilizer, high in phosphorus, can encourage more abundant flowering. Always water the plant thoroughly after applying fertilizer to help distribute the nutrients into the soil and reduce the risk of root burn.