Carnivorous Plants/nepenthes


i had my nepenthes for 1 year. still not a single pitcher produced. so i decided to buy a greenhouse and put it outside. look in the picture and this is how all leaves started looking like. this is sign of what? no water or extra water? sudden change or very mich heat? what should i change for it?

thank you

Hello Yousef,

There are simply too many factors that go into pitcher formation to know what is happening to your plant without more information.

Try to find out the exact species of Nepenthes you have. That will help determine what kind of environment the plant prefers and needs.

Once you find that out, you can determine the level of temperature, humidity, light and other basic factors that will help your plant to thrive and begin pitchering.

For now, try to keep the plant around a 70 degree Fahrenheit range if possible and ensure that the humidity does not fluctuate drastically. Provide the plant with partial to indirect sun, but make sure it is getting strong light (about what a shrub would get growing under a tree). Since the plant cannot obtain insects, you can fertilize the plant with 1/4 strength general purpose orchid fertilizer mixed in water and sprayed on the leaves lightly. Do not fertilize the soil. Once you have more information on the exact Nepenthes species, you can determine what to do to simulate its environment, particularly in the area of temperature. Some Nepenthes like moderate temperatures, some like it warmer, some like a temperature variation with cold temperatures at night.

If you send a followup, you will need to send it to another expert as I will be away for a few days.

Carnivorous Plants

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Christopher Littrell


I am capable of answering questions about the most common carnivorous plants found in cultivation. I have no personal experience with Byblis, Drosophyllum, Aldrovanda, and Heliamphora. I have not cultivated gemmae forming pygmy sundews nor tuberous sundews. For information regarding those aforementioned species, I would suggest contacting other experts. I can answer questions regarding most species of Nepenthes, tropical and temperate Drosera, Mexican Pinguicula, Sarracenias, and Dionaea. I have some limited experience with growing Utricularia, Cephalotus, and Darlingtonia.


I have grown carnivorous plants off and on for about 27 years. I have made the same mistakes and suffered the same mishaps that many growers make as they attempt to separate the myths from the realities of growing these plants. Currently, I am successfully growing a variety of tropical sundews, a Nepenthes, several Venus Flytraps of varying ages, and Sarracenias. I have been successful in stratifying Sarracenia seeds and providing artificial dormancy requirements for my temperate plants when needed.

I hold a Master's degree in Educational Psychology. Over my lifetime, I have constantly read books involving the growing conditions of carnivorous plants. I hope to incorporate the educational aspects involved in psychology with teaching other people how to cultivate carnivorous plants.

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