Pollination of Cucurbita spp. (squash and pumpkin) crops in Florida
A close-up photo of a male squash bee visiting a squash flower.
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Honey bee
Bumble bee
Squash bee

How to Cite

Mallinger, Rachel, and Oscar Liburd. 2021. “Pollination of Cucurbita Spp. (squash and Pumpkin) Crops in Florida”. EDIS 2021 (1), 7. https://doi.org/10.32473/edis-in1311-2021.


Squash and pumpkin (Cucurbita spp.) are economically significant crops in Florida with over 7,900 acres in production and an estimated value of $35,412,000. Without insect pollination, however, crop yields for zucchini, crookneck, spaghetti, butternut and the rest of the large and delectable crew of squash and pumpkin species grown in Florida would be low to nonexistent. This 7-page fact sheet written by Rachel E. Mallinger and Oscar E. Liburd and published by the UF/IFAS Entomology and Nematology Department explains the pollination biology and requirements for squash and pumpkin, describes the signs and causes of poor pollination, and provides recommendations for improving pollination of these crops in Florida.<

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Adler, L. S., and R. V. Hazzard. 2009. “Comparison of Perimeter Trap Crop Varieties: Effects on Herbivory, Pollination, and Yield in Butternut Squash.” Environ. Entomol. 38:207–215. https://doi.org/10.1603/022.038.0126

Artz, D. R., and B. A. Nault. 2011. “Performance of Apis mellifera, Bombus impatiens, and Peponapis pruinosa (Hymenoptera: Apidae) as Pollinators of Pumpkin.” J. Econ. Entomol. 104:1153–1161.

Blaauw, B. R., and R. Isaacs. 2014. Flower Plantings Increase Wild Bee Abundance and the Pollination Services Provided to a Pollination-Dependent Crop.” J. Appl. Ecol. 51:890–898. https://doi.org/10.1111/1365-2664.12257

Campbell, L. G., J. Luo, and K. L. Mercer. 2013. “Effect of Water Availability and Genetic Diversity on Flowering Phenology, Synchrony and Reproductive Investment in Summer Squash.” The Journal of Agricultural Science 151:775–786. https://doi.org/10.1017/S0021859612000731

Cane, J. H., B. J. Sampson, and S. A. Miller. 2011. Pollination Value of Male Bees: The Specialist Bee Peponapis pruinosa (Apidae) at Summer Squash (Cucurbita pepo).” Environmental Entomology 40:614–620. https://doi.org/10.1603/EN10084

Canto-Aguilar, M. A., and V. Parra-Tabla. 2000. “Importance of Conserving Alternative Pollinators: Assessing the Pollination Efficiency of the Squash Bee, Peponapis limitaris in Cucurbita moschata (Cucurbitaceae).” Journal of Insect Conservation 4:201–208. https://doi.org/10.1023/A:1009685422587

Chan, D. S. W., R. S. Prosser, J. L. Rodríguez-Gil, and N. E. Raine. 2019. “Assessment of Risk to Hoary Squash Bees (Peponapis pruinosa ) and Other Ground-Nesting Bees from Systemic Insecticides in Agricultural Soil.” Sci. Rep. 9:1–13. https://doi.org/10.1038/s41598-019-47805-1

Dorjay, N., D. P. Abrol, and U. Shankar. 2017. Insect Visitors on Cucumber and Bittergourd Flowers and Impact on Quantity of Crop Production by Different Pollination Treatment.” Journal of Apiculture 32:77–88.

Ellis, A., and K. S. Delaplane. 2009. “An Evaluation of Fruit-Boost (TM) as an Aid for Honey Bee Pollination under Conditions of Competing Bloom.” J. Apic. Res. 48:15–18. https://doi.org/10.3896/IBRA.

Glala, A. A. A., E. E. H. Abd El-Samad, S. O. El-Abd, and H. A. Obiadalla-Ali. 2012. Increasing Organic Production of Summer Squash by Modulating Plant Sex Ratio.” Acta Hortic.:137–143. https://doi.org/10.17660/ActaHortic.2012.933.15

Griffiths‐Lee, J., E. Nicholls, and D. Goulson. 2020. “Companion Planting to Attract Pollinators Increases the Yield and Quality of Strawberry Fruit in Gardens and Allotments.” Ecological Entomology https://doi.org/10.1111/een.12880

Hall, H. G. 2010. The Squash Bee Xenoglossa kansensis Cockerell (Hymenoptera: Apidae) Found in Organic Farms in Northern Florida.” Journal of the Kansas Entomological Society 83:84–88.

Herrero, M. P., and R. R. Johnson. 1980. “High Temperature Stress and Pollen Viability of Maize1.” Crop Science 20:796. https://doi.org/10.2135/cropsci1980.0011183X002000060030x

Hladun, K. R., and L. S. Adler. 2009. “Influence of Leaf Herbivory, Root Herbivory, and Pollination on Plant Performance in Cucurbita moschata.” Ecological Entomology 34:144–152. https://doi.org/10.1111/j.1365-2311.2008.01060.x

Julier, H. E., and T. H. Roulston. 2009. “Wild Bee Abundance and Pollination Service in Cultivated Pumpkins: Farm Management, Nesting Behavior and Landscape Effects.” Journal of Economic Entomology 102:563–573. https://doi.org/10.1603/029.102.0214

Mallinger, R. E., P. Werts, and C. Gratton. 2015. Pesticide Use within a Pollinator-Dependent Crop Has Negative Effects on the Abundance and Species Richness of Sweat Bees, Lasioglossum spp., and on Bumble Bee Colony Growth.” Journal of Insect Conservation 19:999–1010. https://doi.org/10.1007/s10841-015-9816-z

Mancini, L., and N. Calabrese. 1999. Effect of Growth Regulators on Flower Differentiation and Yield in Zucchini (Cucurbita pepo l.) Grown in Protected Cultivation.” Acta Hortic. 492:265-272


NeSmith, D. S., G. Hoogenboom, and D. W. Groff. 1994. “Staminate and Pistillate Flower Production of Summer Squash in Response to Planting Date.” HortScience 29:256–257. https://doi.org/10.21273/HORTSCI.29.4.256

Shuler, R., T. Roulston, and G. Farris. 2005. “Farming Practices Influence Wild Pollinator Populations on Squash and Pumpkin.” Journal of Economic Entomology 98:790–795.

Schultheis, J. R., J. T. Ambrose, S. B. Bambara, and W. A. Mangum. 1994. “Selective Bee Attractants Did not Improve Cucumber and Watermelon Yield.” HortScience 29:155–158.

Stoner, K. A., and B. D. Eitzer. 2012. “Movement of Soil-Applied Imidacloprid and Thiamethoxam into Nectar and Pollen of Squash (Cucurbita pepo).” PLOS ONE 7:e39114. https://doi.org/10.1371/journal.pone.0039114

Tepedino, V. J. 1981. “The Pollination Efficiency of the Squash Bee (Peponapis pruinosa) and the Honey Bee (Apis mellifera) on Summer Squash (Cucurbita pepo).” Journal of the Kansas Entomological Society 54:359–377.

Tuell, J. K., and R. Isaacs. 2010. “Community and Species-Specific Responses of Wild Bees to Insect Pest Control Programs Applied to a Pollinator-Dependent Crop.” J. Econ. Entomol. 103:668–675.

Ullmann, K. S., M. H. Meisner, and N. M. Williams. 2016. “Impact of Tillage on the Crop Pollinating, Ground-Nesting Bee Peponapis pruinosa in California.” Agriculture, Ecosystems & Environment 232:240–246. https://doi.org/10.1016/j.agee.2016.08.002

Venturini, E. M., F. A. Drummond, A. K. Hoshide, A. C. Dibble, and L. B. Stack. 2017. “Pollination Reservoirs for Wild Bee Habitat Enhancement in Cropping Systems: A Review.” Agroecology and Sustainable Food Systems 41:101–142. https://doi.org/10.1080/21683565.2016.1258377

Walters, S. A., and B. H. Taylor. 2006. “Effects of Honey Bee Pollination on Pumpkin Fruit and Seed Yield.” HortScience 41:370–373. https://doi.org/10.21273/HORTSCI.41.2.370

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