Petitgrain oil is produced from the leaves and twigs of the bitter orange tree (Citrus aurantium amara), a member of the Rutaceae plant family. These evergreen trees can grow up to 20 feet in the wild, but will only grow to half this height in cultivation. They are the hardiest of all the citrus plants and are often used when grafting other citrus trees to make them suitable for harsher conditions.

The tree produces a distinctive 'double leaf', which has a small bulge at the base of the main leaf.

Its fruit

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