How to Fertilize rhododendron 'Moerheim'?
Ericaceous fertilizer monthly from spring through late summer

rhododendron 'Moerheim' · Rhododendron 'Moerheim'
Grow in moist but well-drained, leafy, humus-rich acid soil in part shade with shelter; see rhododendron cultivation
Ericaceous fertilizer monthly from spring through late summer