Sun: Heliamphora like bright light. They may be grown with less light, but they will remain much greener. In a terrarium, high powered fluorescent light should be used and we recommend a fixture with four T-5 bulbs.
Water: Use the tray method, keeping the soil damp to wet year round. Keep the soil cool by watering with cold water, (refrigerated water is quite helpful on warm summer days).
Temperature: With the exception of the lowland form of Heliamphora heterodoxa, all Heliamphora come form high plateaus called the Tepuis in Venezuela. It is cool and misty all year, so they require bright light, without ever heating up. Even cooler nights are ideal. This makes Heliamphora very challenging to grow. They may be grown on cool sunny windowsills sometimes, but the best plants are grown in climate controlled greenhouses or terrariums where day temps remain in the 70's and night time temps in the 40's to 50's.
Because of their need for temperature control we recommend specific containers. Best in light-colored, preferably white, plastic or glazed ceramic pots. Single plants grow well in six- to eight-inch pots. The bigger the pot the better really, as their mass will resist warming
Dormancy: No dormancy is required.
Soil: Use a mix comprised of mostly New Zealand long-fibered sphagnum moss with some pumice or lava rock mixed in. Basically the mix should be airy and the rock ingredients will help keep the mix open and cool. They may be grown in live sphagnum also, but take care that it doesn't overwhelm the Heliamphora.
Fertilizer/Feeding: MaxSea fertilizer can also be applied, once per month, to the leaves and pitchers of the plant. Avoid pouring through the soil.