Altitude ranges for cultivating ihcafe 90 vary depending on the latitude. The recommended altitude range for latitudes between 5°N to 5°S is between 1000m-1600m. For latitudes between 5-15°N or 5-15°S, the range is 700m-1300m. At latitudes of 15°S or 15°N, the range is 400m-1000m. These altitude ranges are optimal for growing ihcafe 90, taking into consideration factors that affect its quality potential at high altitudes.