Favourable climate & soil
Rambutan grows well in warm tropical climate. Higher humidity and favourable climatic condition are important factors. It also requires a minimum of 150 cm well distributed annual rainfall. The trees grow well at elevations up to 800 m above sea level. The ideal temperature for optimum growth is 22 to 35° C. But the slight climatic variations would not affect its yield and growth. Well drained loamy soils with good organic content are most suitable for optimum growth and yield. Acidic and alkaline nature of the soil should be moderate (pH value 4.5 to 6.5). Sites prone to waterlogging should be avoided for plantation. Orchards in slightly sloped lands yield better, because they capture maximum sunlight.