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Green bean

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Green beans are the young, unripe fruits of various cultivars of the common bean, known scientifically as *Phaseolus vulgaris*.

Heaps of beans
Heaps of beans

While many beans are grown for their dried seeds, green beans are unique because they are harvested while the pods are still immature. This means the enclosing pods are consumed along with the developing seeds inside. This method is very similar to how people harvest snow peas or sugar snap peas. People around the world use many different names for them. They are often called French beans, snap beans, or string beans. In the Philippines, they are called Baguio beans to distinguish them from yardlong beans.

There are several distinct ways these plants grow, which determines how they are farmed.

BBC Gardeners World - 2017-06-15 - Andy Mabbett - 02
BBC Gardeners World - 2017-06-15 - Andy Mabbett - 02

The first major group is bush beans, also called dwarf beans. These are short plants that do not grow more than 20 inches in height. They do not require extra supports to stand upright. Bush beans reach maturity and produce all their fruit in a short period. Because they produce fruit all at once, they are easy to harvest with machines. This makes them the most common choice for commercial farms. The second group is pole beans, or climbing beans, which grow as long, twisting vines. These vines must be supported by poles or trellises. Pole beans can include species like *Phaseolus coccineus* or *Vigna unguiculata subsp. sesquipedalis*. There are also half-runner beans that share characteristics of both groups.

Cultivars, or specific varieties, of these beans offer a wide range of appearances and flavors.

BBC Gardeners World - 2017-06-15 - Andy Mabbett - 02
BBC Gardeners World - 2017-06-15 - Andy Mabbett - 02

There are over 130 known varieties of edible pod beans. Some varieties are specifically selected for the succulence and flavor of their pods. These are often called snap beans if they have colorful pods like purple, red, or streaked patterns. True green beans are exclusively green in color. Pod shapes also vary significantly between types. Fillet types have thin, circular pods. Romano types have wide, flat pods. Some green beans are actually yellow, and these are known as wax beans. Other pods may appear purple but will change to green during the cooking process.

The history of the green bean stretches back thousands of years to Central and South America.

BBC Gardeners World - 2017-06-15 - Andy Mabbett - 02
BBC Gardeners World - 2017-06-15 - Andy Mabbett - 02

Evidence shows that people have cultivated these plants in Mexico and Peru for a very long time. A major change in how we eat these beans happened in the late 19th century. In 1894, a man named Calvin Keeney worked in Le Roy, New York. He is often called the "father of the stringless bean." He successfully bred the first version of a bean that lacked the tough, fibrous string. This innovation led to the modern French beans that are common today.

Green beans provide specific nutritional value to the human diet.

Heaps of beans
Heaps of beans

They are composed of 90% water, 7% carbohydrates, and 2% protein. They contain very little fat. In a standard reference amount, they serve as a moderate source of vitamins. Specifically, they provide between 10% and 19% of the Daily Value for both vitamin C and vitamin K. While they provide energy, they do not contain other micronutrients in significant amounts. Because of this composition, they are a light and hydrating food.

In the kitchen, green beans are incredibly versatile and appear in many global cuisines.

Heaps of beans
Heaps of beans

They can be sold fresh, canned, or frozen. People prepare them by steaming, boiling, stir-frying, or baking. They are also a frequent ingredient in soups, stews, and casseroles. They can even be pickled in a way similar to cucumbers. In the northern United States, a famous dish is the green bean casserole. This specific recipe combines green beans with cream of mushroom soup and French-fried onions, especially during Thanksgiving.

The global scale of green bean production is massive.

Heaps of beans
Heaps of beans

In 2024, the total world production reached 26 million tonnes. China is the largest producer by a significant margin, accounting for 72% of the global total. India is the second largest producer in the world. This high production level supports the many different ways these legumes are used in food systems globally. From small home gardens to massive commercial farms, the green bean remains a vital part of human agriculture.

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