The flowers grow in clusters at the end of each branch; they are white, pink to red, 2.5–5 cm (0.98–1.97 in) diameter, with a deeply 5-lobed fringed corolla round the central corolla tube.
They are often, but not always, sweet-scented.
Flowers bloom in clusters at the end of each branch usually in spring and summer.
Oleander has traditionally been used in the treatment of cardiac illness, asthma, diabetes mellitus, corns, scabies, cancer, and epilepsy, and in wound healing as an antibacterial/antimicrobial.
Oleander is used for heart problems, cancer, skin problems, and other conditions.
The flowers are used to treat microbial and fungal diseases.