Cestrum diurnum is a species of Cestrum, native to the West Indies. Common names include day-blooming cestrum, day-blooming jessamine, and day-blooming jasmine. Also known as Din ka Raja (king of the day), in Urdu and Hindi. The scent of this quick-growing and evergreen woody shrub, often used for screens and borders, is released by day. Cestrum diurnum is easily propagated from the seed, which it produces in abundance.

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