Vetiver will grow under very hot conditions. Plant in full sunlight, water at planting, and thereafter once a week until well established - you cannot over water!. I would mix some well rotted compost or chicken manure into the planting hole at time of planting. should grow very well. You will find more about vetiver at: http://www.vetiver.org

Good luck

Here is a link that might be useful: Vetiver Network International