Watering
Nepenthes appreciate frequent watering and the soil should never be allowed to become dry. Watering can be done on a daily basis (in warm temperatures), or once every 2-3 days during winter. Pots should never be left in standing water as this will quickly suffocate the roots. Clean, pure water should be used whenever possible (rainwater, distilled water or reverse osmosis are ideal) as the excess dissolved minerals frequently found in tap water can accumulate in the soil and cause damage to the sensitive roots.

Fertilizer
In the wild, Nepenthes thrive in nutrient-poor soil largely because they are capable of supplementing their diet with insect prey. Though it has been shown that plants in cultivation can survive for many years without "eating", growth can be greatly enhanced by regular feeding. In some situations, such as outdoors or in the greenhouse, the plants may capture a sufficient number of insects on their own. Many growers prefer to feed insects to the pitchers by hand; in this case frozen crickets or mealworms (available at pet food stores) are often used. Care should be taken to avoid an excess amount of prey in the pitchers, as this can lead to bad odours and death of the pitcher. Usually a few insects per pitcher is sufficient. Foodstuffs such as meat and eggs can lead to rot. As an alternative to feeding with insects, Nepenthes may be given artificial fertilizers. A variety of brands can be used, but those with a high nitrogen content and full micronutrients give the best results. Fertilizer (usually diluted to 1/4 normal concentration) can be applied directly to the soil once monthly to mature, actively-growing plants. Young plants or slow-growing species (especially highlanders) should be given a more dilute solution at less frequent intervals.