Watercress

Watercress is a green plant.

It grows in clear, moving water. The stems are hollow. This helps them float.

It has small white flowers. Tiny bugs like to visit them.

People eat the leaves and stems. They can eat them raw. Some people cook them in soup.

The plant has a sharp taste. It is a very old food for people.

It is a tasty green treat!

Watercress is a green plant that grows in water. It is a perennial plant. This means it can live for many years. It belongs to the cabbage family. Many of its relatives include radish and wasabi. These plants often have a sharp, spicy taste.

Watercress growing in beds.

The stems of watercress are hollow. This helps them float in the water. The plant grows very fast. It likes to live in clear, fast-flowing streams. In the United Kingdom, it often grows in chalk streams. These are streams with a lot of calcium in the water.

Watercress is a healthy food. It is 95% water. It has a lot of vitamin K and vitamin C. People can eat the leaves, stems, and fruit. In China, people boil it in soup. In Vietnam, people eat it raw in salads. You can also eat it as sprouts. These are small shoots that grow from seeds.

Watercress is a tasty green vegetable.

Watercress is a fast-growing plant that loves to live in water. It belongs to the cabbage family, which is also called Brassicaceae. This plant is a perennial, so it can live for many years. Many of its relatives have a sharp or spicy taste. You might know plants like radish, mustard, or wasabi.

These plants all share that piquant flavor. Watercress is one of the oldest leaf vegetables that people eat.

This plant has a very special way of growing in its habitat. The stems are hollow, which helps them float in the water. It grows best in clear, fast-flowing chalk streams. These streams have water that is slightly alkaline. The leaves have a shape called pinnately compound. Small white and green flowers grow in clusters on the plant. Insects like hoverflies often visit these flowers.

People have been using watercress for a very long time. Ancient Romans believed eating it could cure mental illness. In the twelfth century, a mystic named Hildegard of Bingen suggested eating it steamed. She thought it could help with fever or jaundice. Native Americans also ate the plant. They used it to treat kidney illnesses and constipation.

Growing watercress has a long history in many places. In the United Kingdom, William Bradbery first grew it for business in 1808. He grew it along the River Ebbsfleet in Kent. Today, many parts of England grow this vegetable. Hampshire is a very important place for it. New Alresford in Hampshire is even called the watercress capital.

In the 1800s, watercress was introduced to China through Hong Kong and Macao.

Watercress is a very healthy food to eat. It is 95% water and very low in fat. It is a great source of vitamin K and vitamin C. You can eat the leaves, stems, and even the fruit. In China, people often boil it in a wintertime tonic soup with pork. In Vietnam, it is common to eat it raw in salads.

You can even eat the tiny shoots called sprouts. Just remember that wild watercress can sometimes have parasites like giardia.

Watercress, known scientifically as Nasturtium officinale, is a fast-growing perennial aquatic plant. It belongs to the Brassicaceae family, which is commonly called the cabbage family. This plant is highly significant because it is one of the oldest leaf vegetables consumed by humans. While its Latin name suggests a connection to the flowers called nasturtiums, they are actually different. Nasturtiums belong to the Tropaeolaceae family. Molecular evidence shows that watercress with hollow stems is actually more closely related to the genus Cardamine than to the genus Rorippa.

The physical structure of watercress allows it to thrive in its watery environment. The plant features stems that are hollow, which helps them float in the water. Its leaf structure is described as pinnately compound. When the plant matures, it produces small inflorescences, which are flower clusters. These clusters are white and green in color. These flowers attract various insects, particularly hoverflies such as Eristalis flies. If left unharvested, the plant can grow to a significant height.

Watercress grows best in specific natural habitats. In the United Kingdom, it prefers clear, fast-flowing chalk streams. These streams provide water that is slightly alkaline, which is the ideal condition for the plant. Because it is a semi-aquatic plant, it is very well-suited for hydroponic cultivation. This is a method of growing plants in water rather than soil. In some regions, watercress is considered a weed. When it is introduced to non-native environments, it can become invasive. It increases organic matter in the sediment, which attracts predatory macroinvertebrates that eat other native plants. For this reason, it is prohibited in Illinois.

The history of watercress cultivation is quite long. In the United Kingdom, the horticulturist William Bradbery first began commercial cultivation in 1808. He grew the plant along the River Ebbsfleet in Kent. Since then, cultivation has spread to many areas. In the 1800s, watercress was introduced to China via Hong Kong and Macao. It also spread to the tropical highland areas of Asia. In England, many settlements carry names derived from the Old English word for watercress, such as Kersey and Kershopefoot. Even the famous Watercress Line railway was named after the plant because it was a common cargo.

Cultivation is done on both large and small scales. In the UK, important historical sites include Hampshire, Stamford, and St Albans. Today, it is grown in counties like Dorset, Wiltshire, and Hertfordshire. New Alresford in Hampshire is known as the nation's watercress capital. Growing it hydroponically is common because it meets high market demand. However, fresh watercress is difficult to distribute. This is because the leaves cannot be dried and stay fresh for only two to three days. Some people also harvest the edible shoots as sprouts shortly after germination.

Watercress is a very nutrient-dense food. It is composed of 95% water, 2% protein, and 1% carbohydrates. It contains negligible amounts of fat. A reference amount of 100 grams of raw watercress provides 11 calories of energy. It is a rich source of vitamins, providing 208% of the Daily Value (DV) for vitamin K and 48% DV for vitamin C. It also contains moderate amounts of vitamin A, manganese, and potassium. People eat the leaves, stems, and fruit. In China, it is boiled with pork for a wintertime tonic soup. In Vietnam, it is often used raw in salads.

Throughout history, people have used watercress for many different purposes. Ancient Romans believed it could cure mental illness. In the twelfth century, Hildegard of Bingen suggested steaming it to treat jaundice or fever. Native Americans used the plant to treat constipation and kidney illnesses. Some also thought it was an aphrodisiac. Early African Americans used it as an abortifacient. From a modern medical perspective, certain compounds in watercress may cause drug interactions. Specifically, they may inhibit the cytochrome P450 enzyme CYP2E1. This could affect people taking medications like chlorzoxazone. When collecting wild watercress, one must be careful of parasites like giardia or the liver fluke, Fasciola hepatica.