How to Fertilize Rhododendron glischrum subsp. rude?
Ericaceous feed in spring and lightly after bloom

Rhododendron glischrum subsp. rude · Rhododendron glischrum subsp. rude
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, and do not allow plants to dry out. Mulch annually, ideally with leaf mould. See rhododendron cultivation for more detailed advice
Ericaceous feed in spring and lightly after bloom