The plants that occur at sea level up to 800 m. elevation. Generally require constant warm weather, which is not below 20 C degrees (68 F degrees) at night. Too cool weather made them stop growing and result in leaf damage. Humidity should also not below 60% with good air movement.
The plants that found between 900-1,900 m. elevation. Prefer moderate temperature; not exceed than 25 C degrees (41 F degrees) day and not below 10 C degrees (50 F degrees) at night, with constant high humidity (70-90%) and good air movement. Some intermediate plants (marked as WARM - INT) may adapt to warm condition, but most are sensitive to heat, which reflect in smaller, blackened or dropping leaves and slower growth.
Highland plants their habitat is over 2,000 m. elevation, in the cloud forest where covered with mist all day. This means the humidity is constant at high level (above 90%) and low light exposure. Most are hardy even in below freezing temperature. Some species also adapt and thrive in intermediate climate (marked as INT - COOL). In vice versa they will be died back shortly after expose to heat and lower humidity, so not recommended for lowland condition.
Xerophytic plant, which are species of plant that have adapted to survive in a drought environment such as a desert or semi-Alpine climate. Generally they require different condition from other plants. Most have thick or succulent, or intense cutin-coated foliage to prevent sun burnt and evaporation in such this environment. From this they are sensitive to overwater. In cultivation feeding liquid water one or twice a week is enough. They structure have developed and become heat tolerance--can survive even under direct sun, but require rather cool weather (best below 20 C degrees (68 F degrees) at night.