How to Fertilize rhododendron 'Vulcan'?
Ericaceous fertilizer monthly from spring through late summer
rhododendron 'Vulcan' · Fertilizing
rhododendron 'Vulcan' · Rhododendron 'Vulcan'
Grow in moist but well-drained, leafy, humus-rich acid soil in part shade with shelter; see rhododendron cultivation
Watering: Keep acidic root zone evenly moist, never leaving waterlogged soilSunlight: Partial shadeHarmful if eaten. Wear gloves and other protective equipment when handling