Is the pitcher plant poisonous? Know the facts before you grow one

The pitcher plant is the collective name for all species in the genus Nepenthes, with its native range mainly in the tropical regions of the Old World. In China, only one species is found in Guangdong, and although it grows wild in places such as Sanlingshan and Leizhou in Guangdong, it was rarely used, until the introduction of superior pitcher plant varieties into China after the 1990s, which were mainly used for flower exhibitions. Now let us take a look at whether the pitcher plant is poisonous!

Is the pitcher plant poisonous?

The pitcher plant itself is not poisonous, but the nectar secreted by the nectar glands inside the pitcher is slightly toxic and has a numbing effect. However, for these nectars to harm the human body, at least 1000 milliliters would have to be extracted and drunk in one go, so for home cultivation the pitcher plant has practically no toxicity, and as long as it is not eaten by mistake it will cause no harm. However, if there are small children at home, they might eat it by mistake, so special care should be taken.

Does the pitcher plant eat insects?

The structure of the pitcher plant's insect-trapping pitcher is rather special, and the inner wall of the pitcher has a lot of wax and is very smooth. On the inner wall there are about 1 million digestive glands, which can secrete a large amount of colorless, transparent, slightly fragrant acidic digestive fluid after the pitcher plant catches an insect. This digestive fluid contains amines and coniine that can paralyze and poison insects. At the same time, there are many nectar glands on the inner side and the edge of the pitcher's lid, which can secrete fragrant and sweet nectar to lure insects. When the pitcher is open with this honey-pot lid, it will attract many greedy small insects, and once a small insect falls into the pitcher, the lid will immediately close automatically, and the insect will soon be poisoned to death. Before long, all its body parts are digested and absorbed as nutrients by the pitcher plant.

How do you grow a pitcher plant?

1. Soil: For growing pitcher plants, loose, fertile and airy leaf mold or peat soil is best, and for potted plants a mixed substrate of peat soil, sphagnum moss, charcoal and fir bark shavings is commonly used.

2. Watering: The pitcher plant is quite sensitive to moisture and can only grow and develop normally under high humidity. During the growing season it needs frequent spraying, 4 to 5 times a day. If the temperature varies greatly or it is too dry, the formation of the leaf pitchers will be affected.

3. Sunlight: The pitcher plant is an epiphytic plant, often growing under large trees or on the north side of rocks, and its natural conditions are semi-shaded. In summer, under direct strong light, it must be shaded, otherwise the leaves are easily scorched, directly affecting the development of the leaf pitchers.

4. Temperature: The suitable growing temperature for the pitcher plant is 25 to 30°C, from March to September it is 21 to 30°C, and from September to March of the following year it is 18 to 24°C. In winter the temperature should not be lower than 16°C; below 15°C the plant stops growing, and below 10°C the leaf edges suffer frost damage.

5. Fertilizing: The pitcher plant is not demanding about fertilizer and does not need special fertilizing, because the pitcher plant can usually catch insects by itself and convert them into nutrients. If the pitcher plant has insects to eat, there is no need to fertilize it.

6. Pests and diseases: The pitcher plant often suffers from leaf spot disease and scale insect damage. For leaf spot disease, spray with a 1000-fold dilution of 50% zineb wettable powder, and for scale insects, spray with a 2000-fold dilution of 40% dimethoate emulsifiable concentrate.

7. Pruning: Under suitable conditions each pitcher of the pitcher plant can survive for several months. When it has already withered, you can cut it off to make the whole plant look more beautiful, but this is purely for appearance and has nothing to do with the health of the plant.