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Writer's pictureMike W

From Poison to Potatoes: A Fascinating Plant Family

Deadly nightshade, also known as Atropa belladonna, is a poisonous plant that belongs to the Solanaceae family. This family of plants includes many common foods such as tomatoes, eggplants, and peppers, as well as some other poisonous plants like tobacco and jimsonweed.

While many members of the Solanaceae family are safe for human consumption, deadly nightshade is known for its toxic properties. All parts of the plant contain alkaloids such as atropine, hyoscyamine, and scopolamine, which can cause hallucinations, delirium, and even death in large doses. Because of these dangerous properties, deadly nightshade is rarely consumed, and is instead used in small doses for medicinal purposes.

Despite its deadly reputation, deadly nightshade actually played an important role in the development of one of the world's most important crops: the potato. Potatoes, which are native to the Andes region of South America, were first domesticated by indigenous farmers thousands of years ago. These early farmers cultivated a variety of potatoes with a slightly bitter taste, which they believed had medicinal properties.

When the Spanish conquistadors arrived in the Andes in the 16th century, they encountered the potato for the first time. They were intrigued by the plant's unusual properties and brought samples back to Europe to study. It was then that they discovered that the potato was a member of the Solanaceae family, along with deadly nightshade and other poisonous plants.

At the time, many people in Europe believed that all members of the Solanaceae family were poisonous, including potatoes. In fact, it was not until the 18th century that the potato became widely accepted as a safe and nutritious food.

The discovery that potatoes were related to deadly nightshade had other implications as well. Because of their shared genetics, potatoes were susceptible to many of the same diseases and pests that affected deadly nightshade and other Solanaceae plants. This meant that early potato farmers had to be careful to avoid planting potatoes in soil that had previously been used to grow other members of the Solanaceae family.


It is not recommended to eat green potatoes because they contain a high concentration of solanine, a toxic alkaloid. Solanine is produced by the potato plant in response to stress, such as exposure to sunlight, and is concentrated in the potato's skin and any green parts. Eating green potatoes, or potatoes with green spots or streaks, can cause a range of symptoms, including nausea, vomiting, diarrhea, headaches, and even death in extreme cases. While cooking can break down some of the solanine, it is still best to avoid eating green potatoes altogether. It is important to store potatoes in a cool, dark place to prevent them from turning green and becoming toxic.

Today, the potato is one of the world's most important crops, with more than 370 million tons produced annually. It is used in a wide variety of dishes, from mashed potatoes to French fries to potato chips. While most people are aware of the potato's importance as a food, few realize its unusual connection to deadly nightshade.

In conclusion, deadly nightshade is a poisonous plant that belongs to the Solanaceae family, which also includes potatoes and other common foods. Despite its toxicity, deadly nightshade played an important role in the development of the potato, one of the world's most important crops. The potato's unusual connection to deadly nightshade reminds us of the complex relationships between plants and the many ways in which they have shaped human history.

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