From the 19th century, English aristocrats traveling the world by ship, brought back an extensive palette of exotic plants with them, which makes up the diversity that we find today. This was a way of displaying wealth and exploration to their peers. The Central Society of Agriculture and Horticulture was created in Nice, to show and exchange plants and botanical knowledge.
Therefore, species and varieties from all over the world are found in this type of garden. These plants were acclimatized and became of strong botanical interest, to the extent of growing collection gardens.
Planting codes can be quite loose. They can express a range of different looks, from the specificity of a terroir to the lushness of a tropical climate...
Of course, The selected range of plants will be adapted to the climate and agronomic qualities of your garden. In the Alpes-Maritimes, there are great variations of conditions over small areas. This opens a choice of growing a very wide range of plant species from all continents within one garden (for example Australian plants alongside Mediterranean and South African plants).
The house, is often closely surrounded by trees and shrubs, the garden is a succession of outdoor "rooms" and atmospheres, discovered while strolling through it.
Nature runs the show.
Plants grow lushly while we observe and respect their opulence, keeping it under loose control.