Growing Roses in a Tropical Climate?

Make sure that the soil is well drained. If you have loose clay soil, add gypsum to help break down the clay. Dig lots of good organic matter into the soil like manure and compost, and help to minimise evapouration from the soil, and to keep the roots cooler by applying a nice layer of mulch. Kind of plant the rose a little higher than the garden bed so that it is on a little mound. This will stop the roots from getting soggy, by sitting in water for a long period of time. Don't let the soil get too wet in the dry season. After the rose bush is established, give it a good watering once a week. If you have major water restrictions, save your water from the rinse cycle of your washing machine, or put a bucket in your shower and use that.