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

rhododendron 'Tortoiseshell Orange' · Rhododendron 'Tortoiseshell Orange'
In mild, frost-free areas, may be grown outdoors in moist but well-drained, humus rich, acidic soil. Position in partial or dappled shade, and add an annual organic mulch (ideally leaf mould). In colder areas, may be grown under glass in ericaceous compost. See rhododendron cultivation for more detailed advice
Ericaceous fertilizer monthly from spring through late summer