Used mostly by architects and architecture students to stimulate light conditions within and around buildings, they would surely please the princes' landscape-architects-in-residence already having fun at the wind tunnels.
And this time, they'll be pruning away — yup, you guessed it — phantasmagorical phototropismic bansais, using imitation latitudes, the artificial passages of days into nights, and simulant seasons as their pruning tools. In due time, there will be a grove set to the Tropic of Cancer or the Tropic of Capricorn. Or set to perpetual twilight. Or impossible solar progressions to create helical, torqued or similar deformations.
Reviewing the checklist:
Gravitropism. In progress.
We could, come to think of it, form a limited liability company from which to coordinate our Dubai landscape enterprises: Earth Wind Rain & Fire LLC?
Unnatural Cultivation by Natural Means.
Heliodons @ Wikipedia
Wind Tunnel QTVR