How to Fertilize rhododendron 'Purple Splendour'?
Ericaceous fertilizer monthly from spring through late summer
rhododendron 'Purple Splendour' · Rhododendron 'Purple Splendour'
Grow in moist but well-drained, leafy, humus-rich acid soil, best in part shade with shelter, suitable for full sun if soil remains reliably moist; see rhododendron cultivation
Ericaceous fertilizer monthly from spring through late summer