Heating a Terrarium for Lowland Nepenthes in Zone 9

A San Jose (Zone 9) grower with a terrarium asked which lowland Nepenthes to grow and if a reptile heat rock would work for winter heating.

Expert Stance on Terrariums

Jacob Farin advocates growing plants suited to your climate. He doesn't grow heat-loving species like N. bicalcarata in Oregon. But if a terrarium is a must:

Heating Methods

1. Heat pad under terrarium with thermometer to set temperature. Better than heat rock for moist environments.
2. Submersible aquarium heater in 3 inches of water at terrarium bottom, with plants elevated above water. Provides even temperature and humidity.

Heat rocks are for dry environments.