How to Fertilize Rhododendron 'Dearest'?
Acid-loving shrub fertilizer monthly in spring and early summer

Rhododendron 'Dearest' · Rhododendron 'Dearest'
Grow in moist but well-drained, humus rich, acidic soil, in partial or dappled shade. Choose a site away from frost pockets and sheltered from strong winds; this cultivar is less hardy than some other azaleas and may need winter protection in colder areas. Mulch annually, ideally with leaf mould. See rhododendron cultivation for more detailed advice
Acid-loving shrub fertilizer monthly in spring and early summer