Cobra Lilies appreciate lots of sun, but in order to avoid overheating in cultivation you may have more success growing it in morning sun only or filtered all day sun. Shade the pots if possible to keep the solar heat at a minimum. Cobra Lilies are not recommended to be grown indoors.
Use the tray method, keeping the soil wet year round. Only use mineral free water, such as rain, distilled or reverse osmosis water. During the long summer days your plant will enjoy cold water. You can accomplish this by keeping your water in the refrigerator. More info on water is available here (Link).
Temperature and Dormancy:
Cobra Lilies are very winter hardy and can take temperatures down to 15 F degrees, however they are very sensitive to heat especially in the roots. Ideal root temperature would be 40-55 F degrees. Warm roots can kill them quite rapidly, hence the use of cold water.
All Cobra Lilies require a winter dormancy starting in October and ending in February. Many of the pitchers will turn brown and die back during this time. Leave them outdoors in full sun, sitting in distilled water during this period. If you live in an area that snows; over winter them indoors on a sunny windowsill in an unheated room or garage. Still sitting in full sun and distilled water.
Soil requirements and recipes can be viewed on my soil page (Link).
Fertilizer and Feeding:
If grown outdoors, they will catch all of their own food. Maxsea fertilizer can also be applied, once per month, to the leaves and pitchers of the plant. Avoid pouring through the soil. Dilute 1/4 teaspoon of Maxsea into 1 gallon of water for application. More information on fertilizer can be reviewed here (Link), and is also available on my store (Link).