Fertilising a Rhododendron 'Scarlet Wonder'
To thrive and produce its vibrant red blooms, Rhododendron 'Scarlet Wonder' requires specific attention to its fertilization regimen. Since it prefers acidic soil, it is crucial to use a fertilizer formulated for acid-loving plants to maintain the proper pH balance. Administer a slow-release, granular acid fertilizer in early spring, as new growth begins to appear.
A second application can be beneficial after the flowering period in late June to encourage robust foliage and support the development of next year's buds. When applying fertilizer, spread it evenly around the drip line of the branches and avoid contact with the leaves and stems to prevent burn. Water the shrub immediately after fertilizing to help distribute the nutrients into the soil. Regular feeding, paired with consistent moisture, will ensure a lush, healthy display of foliage and flowers.