Fertilising a Hydrangea macrophylla 'Blaumeise'
To ensure vibrant blooms and robust health, fertilizing is critical for Hydrangea macrophylla 'Blaumeise'. Commence feeding in early spring, as the growing season begins, and repeat at intervals through to the end of July. Utilize a balanced slow-release fertilizer designed for flowering shrubs, following the manufacturer's instructions to avoid over-fertilization, which can impede bloom production.
For those seeking to enhance the blue hue of the flowers, consider applying a fertilizer that lowers soil pH or adding aluminum sulfate to the soil. This should be done cautiously and according to guidelines, as incorrect usage can harm the plant. In well-drained soils where nutrients are swiftly depleted, an additional top-up of compost or well-rotted manure can provide a steady supply of nutrients, encouraging lush foliage and abundant flowering.