Green beans are the unripe, young fruit and protective pods of various cultivars of the common bean (Phaseolus vulgaris).[1][2] Immature or young pods of the runner bean (Phaseolus coccineus), yardlong bean (Vigna unguiculata subsp. sesquipedalis), and hyacinth bean (Lablab purpureus) are used in a similar way.[3] Green beans are known by many common names, including French beans,[4] string beans,[4] snap beans,[4] and snaps.[5][6]

They are distinguished from the many differing varieties of beans in that green beans are harvested and consumed with their enclosing pods, typically before the seeds inside have fully matured. This practice is analogous to the harvesting of unripened pea pods as snow peas or sugar snap peas.

Nutrition and culinary use

Beans, snap, green, raw
Nutritional value per 100 g (3.5 oz)
Energy 131 kJ (31 kcal)
6.97 g
Dietary fiber 2.7 g
0.22 g
1.83 g
Vitamin A equiv.
35 μg
Thiamine (B1)
0.082 mg
Riboflavin (B2)
0.104 mg
Niacin (B3)
0.734 mg
Pantothenic acid (B5)
0.225 mg
Vitamin B6
0.141 mg
Folate (B9)
33 μg
Vitamin C
12.2 mg
Vitamin K
14.4 μg
37 mg
1.03 mg
25 mg
0.216 mg
38 mg
211 mg
0.24 mg
Other constituents
Fluoride 19 µg

Percentages are roughly approximated using US recommendations for adults.
Source: USDA Nutrient Database
Green common beans on the plant

In the past, bean pods often contained a "string", a hard fibrous strand running the length of the pod. This was removed before cooking, or made edible by cutting the pod into short segments. Modern, commercially grown green bean varieties lack strings.

Green beans are eaten around the world, and are marketed canned, frozen, and fresh. Green beans are often steamed, boiled, stir-fried, or baked in casseroles. A dish with green beans popular throughout the United States, particularly at Thanksgiving, is green bean casserole, which consists of green beans, cream of mushroom soup, and French fried onions.[7]

Some US restaurants serve green beans that are battered and fried, and some Japanese restaurants serve green bean tempura. Green beans are also sold dried, and fried with vegetables such as carrots, corn, and peas, as vegetable chips.

The flavonol miquelianin (Quercetin 3-O-glucuronide) can be found in green beans.[8]


The first "stringless" bean was bred in 1894 by Calvin Keeney, called the "father of the stringless bean", while working in Le Roy, New York.[9] Most modern green bean varieties do not have strings.[3]


Green beans are classified by growth habit into two major groups, "bush" (or "dwarf") beans and "pole" (or "climbing") beans.[10][11][12]

  • Bush beans are short plants, growing to not more than 2 feet (61 cm) in height, often without requiring supports. They generally reach maturity and produce all of their fruit in a relatively short period of time, then cease to produce. Owing to this concentrated production and ease of mechanized harvesting, bush-type beans are those most often grown on commercial farms. Bush green beans are usually cultivars of the common bean (Phaseolus vulgaris).
  • Pole beans have a climbing habit and produce a twisting vine, which must be supported by "poles", trellises, or other means. Pole beans may be common beans (Phaseolus vulgaris), runner beans (Phaseolus coccineus) or yardlong beans (Vigna unguiculata subsp. sesquipedalis).[13][14]


Over 130 varieties of green bean are known.[15] Varieties specialized for use as green beans, selected for the succulence and flavor of their pods, are the ones usually grown in the home vegetable garden, and many varieties exist. Pod color can be green, purple, red, or streaked[16]. Shapes range from thin "fillet" types to wide "romano" types and more common types in between. Yellow-podded green beans are also known as wax beans.[3]

All of the following varieties have green pods and are Phaseolus vulgaris, unless otherwise specified:

Bush (dwarf) types

  • Blue Lake 274[2]
  • Improved Commodore / Bush Kentucky Wonder[2]
  • Derby (1990 AAS winner)[2]
  • Purple Teepee (purple pods)[12]

Pole (climbing) types

  • Algarve[12]
  • Blue Lake[2]
  • Golden Gate (yellow/wax)[12]
  • Kentucky Blue (AAS Winner)[2]
  • Kentucky Wonder[2]
  • Scarlet Runner (Phaseolus coccineus)[17]


According to UN Food and Agriculture Organization (FAOSTAT), the top producers of green beans (in metric tonnes) in 2012.[18]

Rank Country Production
1  China 16,200,000
2  Indonesia 871,170
3  India 620,000
4  Turkey 614,960
5  Thailand 305,000
6  Egypt 251,279
7  Spain 165,400
8  Italy 134,124
9  Morocco 133,744
10  Bangladesh 94,356
World 20,742,857

See also


  1. ^ "Green Beans". The World's Healthiest Foods. Retrieved March 2, 2017. 
  2. ^ a b c d e f g "Beans – Vegetable Directory – Watch Your Garden Grow – University of Illinois Extension". 
  3. ^ a b c "Growing beans in Minnesota home gardens". University of Minnesota Agricultural Extension. Retrieved 20 September 2016. 
  4. ^ a b c Green, Aliza. Field Guide to Produce. p. 126. 
  5. ^ Singh BK and Singh B. 2015. Breeding perspectives of snap bean (Phaseolus vulgaris L.). Vegetable Science 42(1): 1-17.
  6. ^ Hatch, Peter J. "A Rich Spot of Earth": Thomas Jefferson's Revolutionary Garden at Monticello. pp. 159–161. 
  7. ^ Cook's Illustrated (2004). The New Best Recipe. America's Test Kitchen. 
  8. ^ Antioxidant properties of flavonol glycosides from green beans. Plumb G.W., Price K.R. and Williamson G., Redox Report, Volume 4, Number 3, June 1999, pages 123-127, doi:10.1179/135100099101534800
  9. ^ Taylor's guide to heirloom vegetables. Boston: Houghton Mifflin. 1996. ISBN 0-395-70818-4. 
  10. ^ McGee, Rose Marie Nichols; Stuckey, Maggie (2002). The Bountiful Container. Workman Publishing. 
  11. ^ Garrelts, C.; Garrelts, Megan; Lee, Bonjwing (2011). Bluestem: The Cookbook. Andrews McMeel Publishing. p. 71. ISBN 978-1-4494-0061-3. 
  12. ^ a b c d How to Grow French BeansRoyal Horticultural Society, RHS Gardening
  13. ^ Capomolla, F. (2017). Growing Food the Italian Way. Pan Macmillan Australia. p. 143. ISBN 978-1-76055-490-3. Retrieved February 26, 2018. 
  14. ^ Watson, B. (1996). Taylor's Guide to Heirloom Vegetables. TAYLOR'S WEEKEND GARDENING GUIDES. Houghton Mifflin. p. 238. ISBN 978-0-395-70818-7. Retrieved February 26, 2018. 
  15. ^ Facciola, Stephen (1998). Cornucopia II : a source book of edible plants. Kampong Publications. ISBN 0-9628087-2-5. 
  16. ^ Singh B K, Pathak K A, Ramakrishna Y, Verma V K and Deka B C. 2011. Purple-podded French bean with high antioxidant content. ICAR News: A Science and Technology Newsletter 17 (3): 9.
  17. ^ Runner beans are beautiful and edible – Oregon State University Agricultural Extension
  18. ^ "Production of Green Bean by countries". UN Food and Agriculture Organization. 2011. Archived from the original on 2011-07-13. Retrieved 2015-02-02. 

External links