Oleander occurs naturally in Mediterranean regions with hot, dry summers and relatively cold, wet winters, as well as in some parts of Asia and in Japan. It is a small erect shrub with straight lance-shaped leaves. It can grow to 6 metres in the wild but rarely grows to more than 1.5 to 2 metres as an indoor plant. The colourful, scented flowers grow in clusters at the end of each stem. It blooms from spring to late summer. The flowers are typically pink but there are a number of cultivars with single or double pink, red, purple, yellow, salmon or white blooms.