It's very easy, it can grow anywhere a D.burmanni can. It originates from lowland equatorial regions of brazil, so you should have no trouble with it in Singapore. It lives as an annual in the wet season, but can live for sevaral years if you keep it moist, warm, and remove the flower stalks. They slowly die off after they flower, so if you want to keep a plant around for several years, don't let it flower. The main difference between it and D. burmannii is that it is slightly smaller, has almost perfectly round leaves, and turns a golden-yellow color if given good light. Also, like D. burmannii, if you let this one flower, it will produce copious seed and weed itself around your collection. It is also known to readilly hybridize with D. burmannii, producing D. x theocalyxana(Sp?).