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Botanical Name: Azalea indica
Common Name(s): Azalea
Categories: Shrubs and Perennials
‘Azalea’ is the common name given to hybrids developed mainly from Japanese rhododendron species. They are evergreen, free-flowering, fast-growing, and make excellent standard specimens. Avoid too much shade, which will result in poor growth and few flowers.
Synonym: Rhododendrum indicum
Botanical Pronunciation: roh-do-DEN-dron IN-dih-kum
Too much water causes leaves to turn brown; too little results in leaf drop and droopy leaves. Feed regularly in the active growing season with blue hydrangea food, to keep the soil acid, and mulch with acid compost.
Planting: The ideal soil pH for azaleas is 4.5–5.5. Dig a hole 60cm square and deep. Mix two thirds topsoil with one third acid compost, add a cup of bone meal or half a cup of superphosphate and mix well. Transplant large plants in winter.
Watering and feeding: Too much water causes leaves to turn brown; too little results in leaf drop and droopy leaves. Feed regularly in the active growing season with blue hydrangea food, to keep the soil acid, and mulch with acid compost.
Pruning: Not necessary except for occasional shaping. Can be pruned into standard forms.
Popular azaleas are white ‘Grandiflora Alba’, cerise pink ‘Magenta’, and Rhododendron X Encore hybrids: ‘Autumn Carnival’ (deep hot-pink), ‘Autumn Embers’ (deep orange-red), and ‘Autumn Empress’ (strong pink to red). The Encore series is known for its repeated blooms.
1.5 m * 1.5 m
Uses in landscape design
Ideal tub subject on the patio. It thrives under deciduous trees, as it needs the sun in winter.