How to Fertilize Rhododendron 'Songbird'?
Apply an acid-forming fertilizer in spring and after flowering.

Rhododendron 'Songbird' · Rhododendron 'Songbird'
Grow in moist but well-drained, humus rich, acidic soil. Position in partial or dappled shade, or in full sun in cooler spots where the soil does not dry out. Choose a site away from frost pockets and sheltered from strong winds, and mulch annually, ideally with leaf mould. See rhododendron cultivation for more detailed advice
Apply an acid-forming fertilizer in spring and after flowering.