Highland nepenthes are carnivorous plants with ascidian trap and live in tropical mountains characterized by warm days but with a sharp drop in temperature at night. The ideal temperatures are between 24-26 degrees during the day and 12-14 degrees at night. They really love the evening humidity that brings relief from the strong daytime sun. Some species are more tolerant of summer temperatures but extremely hot days above 28 degrees or nights that are too cold below 8 degrees should be avoided. The intermediate nepenthes, on the other hand, are more tolerant of daytime heat but cannot tolerate frost or too cold temperatures in the evening. The ideal temperature for intermediates is between 28-30 degrees during the day and 14-16 degrees at night.
