Limes
Green gold to complete a meal
Lime Overview
Limes are a species in the common-acid fruit group and are distinguished by their high citric-acid content and elliptical shape. Limes are typically consumed in combination with other foods and are grown primarily for the fresh market. Additionally, limes are grown for their juice and oil (Plattner, 2014; Siddiq et al. 2012).
The three major commercially-produced lime varieties are: the Persian lime, the key lime, and the makrut lime. The Persian lime is preferred by American consumers for its large size and high juice content. The key lime is heavily produced in India and Mexico and is preferred by consumers in those areas. The makrut limes is popular in Southeast Asian cuisine where its bumpy skin and aromatic leaves are used for cooking (Plattner, 2014).
In Mexico, key limes are used to treat insomnia, tired eyes, bronchitis, and indigestion. In India, sweet limes offer a cooling effect for fevers and pickled limes aid in indigestion. In Malaysia, lime juice is taken as a tonic to relieve stomach problems (Siddiq et al., 2012).
Origin Site
Limes are believed to have originated in the Northeast India, Indochina region. Limes followed Westward trade routes to the Mediterranean then to the Americas (Plattner, 2014).
The largest producers of limes are India and Mexico. The United States is the largest importer of limes and Mexico's share of their total lime import is 97 percent. The United States imported 912 million pounds of limes from 2011-2013 with 90 percent of these imports from Mexico being Persian limes (Plattner, 2014).
Production Site
Mexico grows both key and Persian limes. Key limes are favored domestically while the United States prefers Persian limes. When the United States produced their own limes, the main production area was in South Florida (Plattner, 2014).
Currently, 50 to 60 percent of Persian limes produced in Veracruz are exported to the United States. Other areas that produce most of Mexico's key limes are Colima, Michoacán, Guerrero, and Oaxaca (Plattner, 2014).
Production
Limes are very freeze-intolerant and require long periods of heat to mature which limits production to subtropical and tropical areas. Harvesting occurs several times throughout the year in January-February, June-July, and September-October. Limes are grown in orchards and are harvested by hand when the skin is smooth and the rind turns pale green. The United States often prefers green limes for consumption although there are no differences in quality between green and fully yellow limes (Siddiq et al., 2012).
After a hurricane in 1926, the commercial key lime production in Florida was lost. The state then began planting Persian limes since they are slightly more freeze-tolerant than the key lime and require lower heat to reach maturity and size preferences. However, years of citrus canker and leafminer, and hurricanes and tropical storms prevented Florida's commercial lime production from fully recovering after 1995 (Donkersley, 2018).
The nearly complete reliance on Mexico for limes sometimes puts the United States in an unfavorable situation. Climate change leads to recurring bad weather and disease that destroy lime trees very easily. Additionally, drug cartels meddle in the supply chain and contribute to an increase in the overall costs of lime production. In the spring of 2014, the price of a case of limes increased from $15 to $100. Prices can double from the last month at any time with the unpredictable weather or lack of commitment from growers (Peterson, 2019).
Gender Issues and COVID-19 Implications
Female agricultural laborers in Mexico experience gender-based violence and abuse in the male-dominated agricultural industry.
- pay disparities
- gender discrimination
- sexual harassment
There is an overall culture of violence against women in Mexico and a lack of regulatory procedures that protect the rights of workers. Although all laborers experience a plethora of abuse, females within the system face an additional burden of abuse and discrimination because of their gender (Klein, 2018).
In April 2020, citrus growers in Veracruz halted the lime harvest due to COVID-19. Packers were not exporting the citrus to the U.S. because of the spread of COVID-19 there and in Mexico. Additionally, the price of limes had dropped and transporting them was not worth the low payment. The lime industry is an essential part of the economy in this area and stopping production has a large impact on the local economy (Fresh Plaza, 2020).
Processing
The buying of export limes operates within a complex and hierarchical system. There are some distributors who own packing sheds and produce their own limes but most are picked then sold through:
- Scales, where truck lots are weighed, bartered, and sold
- Direct selling at packing houses
- Local village posts near lime orchards where limes are washed and sold to field buyers from the scales and packing houses
At each site, individual buyers bid and buy fruit from the vendors who are often middlemen who buy directly from the orchards or village posts (Alvarez, 2006).
After being picked from the orchards, limes are packed into bins and transported to packing houses where they are cleaned, graded, sized, washed, waxed, and packed into 10, 20, 40, or 55 pounds cartons (Produce Blue Book, 2020).
Storage and Distribution
Picked limes ripen quickly in warm climates and are best stored at 48 degrees Fahrenheit with 85 to 90 percent humidity. Green limes are preferred because they are less ripe and can maintain their quality better than yellow limes when shipped (Produce Blue Book, 2020).
Persian limes produced in Veracruz are often shipped to Limonik Produce in McAllen, Texas. The climate in Michoaćan favors the production of fruit, such as key limes, in winter. The cartel has a heavy presence in this area and have control of the lime packinghouses and charge trucks carrying limes to Mexico city. Additionally, trucks have their limes stolen or are subject to long inspections that hurt the quality of the sensitive fruit. When the limes make it to Mexico city, they are then transported to Nogales, Arizona where most winter fruit for the U.S. enters the country. Both paths lead to Rexburg, Idaho where they are consumed (Van Den Broek, 2020; Cattan, 2011).

Consumption
In the special food interview, my sister named several foods that she likes to eat to warm her both physically and spiritually while living in Idaho with her husband. She named fajitas, pho, and Takis. The common, essential ingredient in these foods was lime. Although these foods can be consumed without that flavor, they feel incomplete without that addition. My sister has lived hours away from my family and I since 2014 and homesickness is a common feeling for her. She uses food to warm her in the freezing Idaho climate and to warm her soul that is longing for us here at home. When I think of limes I'll think of how much labor, danger, and specificity go into making my sister's favorite meals feel whole. I'll also think of my brother-in-law's favorite dessert: key lime pie.
References
Alvarez, R.R. (2006). The transnational state and empire: U.S. certification in the Mexican mango and Persian lime industries. Human Organization, 65(1), 35-45. doi: 0018-7259/06/0100035-11$1.60/1
Cattan, N. (2011, April 12). Mexico drug war's latest victim: The lime. The Christian Science Monitor. https://www.csmonitor.com/World/Americas/2011/0412/Mexico-drug-war-s-latest-victim-the-lime
Donkersley, P., Silva, F.W.S., Carvalho, C.M., Al-Sadi, A.M. & Elliot, S.L. (2018). Biological, environmental and socioeconomic threats to citrus lime production. Journal of plant diseases and protection, 125, 339-356. https://doi.org/10.1007/s41348-018-0160-x
Fresh Plaza. (2020, April 7). Citrus growers from Veracruz stop harvesting limes due to coronavirus. https://www.freshplaza.com/article/9206347/citrus-growers-from-veracruz-stop-harvesting-limes-due-to-the-coronavirus/
Klein, J. (2018, July 17). Rooted in violence: Abuse of female farmworkers in Mexico's agriculture industry. The Global Human Rights Clinic at the University of Chicago Law School. https://medium.com/@ghrclinicuchicago/https-medium-com-ihrclinicuchicago-rooted-in-violence-754287cab14a
Peterson, L.K. (2019, March 14). Look out: We may heading for another lime-ageddon. Los Angeles Times. https://www.latimes.com/food/la-fo-expensive-limes-prices-tacos-20190314-story.html
Plattner, K. (2014, September 26). Fruit and tree nuts outlook: economic insight: Fresh-market limes. USDA. https://www.ers.usda.gov/webdocs/outlooks/37059/49132_fresh-market-limes-special-article.pdf?v=5375.7
Produce Blue Book. (2020). Limes. Blue Book Services. https://www.producebluebook.com/know-your-commodity/limes/#
Siddiq, M., Ahmed, J., Lobo, M.G., & Ozadali, F. (Eds.). (2012). Tropical and subtropical fruits: Postharvest physiology, processing and packaging. John Wiley & Sons, Inc.
Van Den Broek, A. (2020, June 26). Tight supplies ahead of Mexican limes? Fresh Plaza. https://www.freshplaza.com/article/9228638/tight-supplies-ahead-of-mexican-limes/