The red cestrum is a species from Mexico. It was introduced in Europe during the nineteenth century, a time when, after the great scientific expeditions of the previous century, many of the plants brought to Europe from other continents had begun to acclimate and even develop naturally, spontaneously. As the globalization process made the world a more homogeneous place, due largely to the efforts of the colonial powers, many species weren’t exotic anymore and became common gradually.
These naturalist expeditions contributed precisely to make the world a smaller place, importing and cultivating plants from around the world into regions that were not their original areas. Consequence of which was, during the second half of the eighteenth and nineteenth centuries, the foundation of botanical gardens in several European nations and by state initiative, which, after all, served as spaces of representation of the domains of the colonial states that created them.
The Spanish Bourbon monarchy was not immune to this trend and also founded gardens in Spain and more interestingly even in America, with the intention of acting as intermediate centers in the process of acclimatization of plants, whose tests were carried primarily on Jardin de Aranjuez, near Madrid. That’s why many American plants, like the red cestrum, would be used for its ornamental qualities in other gardens of the monarchy like in the Real Alcázar of Seville.