Fertilising a Syringa vulgaris 'Andenken an Ludwig Spath'
To support its flourishing and fragrant blooms, Syringa vulgaris 'Andenken an Ludwig Spath' benefits from a well-timed fertilizing regimen. Apply a balanced, slow-release fertilizer early in the spring to encourage vigorous growth and optimal flowering. For this species, a granular fertilizer with a NPK ratio of 10-10-10 is ideal. Spread the fertilizer evenly around the base of the shrub, avoiding direct contact with the trunk and lowest branches.
As the blooming season approaches in May, consider a second application of fertilizer to sustain the plant's energy needs throughout the flowering period. Be mindful to follow the manufacturer's instructions for the correct dosage to prevent over-fertilization. Regular watering after fertilizing will help dissolve the nutrients into the soil, making them more accessible to the root system.