Water Conservation Targets Zeroscaping

While no man is an island, there remains a key fact that as Phuket draws more tourists and surging population water is vastly becoming more of an endangered species.
Around the world in dry locations or those where there is preciously little water to share zeroscaping is drawing many new fans. Essentially this movement is strongly rooted in using plants native to a location and succulents which require infrequent watering except for the forces of nature such as rain.
Another somewhat similar concept is xeriscaping which normally practiced in dry and harsh climates where minimal moisture is present.
For Phuket landscape and garden designers perhaps it's time to revisit those plants which are indigenous to the island and place more emphasis on long term sustainability versus water hungry imports.