While azaleas are nowhere near as popular as they were some years ago, they’re still hard to beat when it comes to producing a mass of garden colour in winter and spring. Azaleas vary in size from small, rather delicate shrubs that are happiest in pots, to the large, hardy indica varieties that seem able to survive all the climatic challenges that are thrown at them. The latter group includes salmon-pink ‘Splendens’, purple ‘Magnifica’ and white or bicoloured bloomers that can reach up to more than two metres tall.

Most azaleas are at their happiest when grown in semi-shade or morning sun. These woodland plants have evolved to grow in the generations of leaf litter that have built up under forest trees. This type of leaf-mulch-derived soil is naturally acidic, which makes azaleas difficult to grow in soils that are tending towards the alkaline.

https://www.yates.com.au/flowers/grow/growing-azaleas/