Wild Bees & the Peppermint Secret

Nearly every peppermint plant you'll ever meet is a clone. Peppermint is a sterile hybrid that barely sets seed — it doesn't need pollinators, and bees have nothing to do with peppermint oil yields, despite what you'll often read. But wild bees work mint flowers relentlessly anyway. This episode untangles what peppermint actually owes to bees, and why garden mint is one of the best mid-summer nectar sources you can grow for native bees. SecretPollinators.com KEY SOURCES Peppermint origin, sterility, propagation Vining, K. J., et al. (2024). Genome structure of hexaploid 'Black Mitcham' peppermint (Mentha × piperita L.). — sterile allohexaploid, male-sterile, clonally propagated. Murray, M. J., Lincoln, D. E., & Marble, P. M. (1972). Oil composition of Mentha aquatica × M. spicata F1 hybrids in relation to the origin of M. × piperita. Canadian Journal of Genetics and Cytology, 14(1), 13–29. Seed-set figure (18,000 floral spikes / >2.75 million ovules / 6 viable seeds) as reported in the peppermint in vitro clonal propagation literature — verify against the primary source cited therein before air. Lawrence, B. M. (ed.) (2006). Mint: The Genus Mentha. CRC Press. Mint Genomics Resource, Lange Laboratory, Washington State University. langelabtools.wsu.edu/mgr Oil biosynthesis and trichomes Croteau, R. B., Davis, E. M., Ringer, K. L., & Wildung, M. R. (2005). Menthol biosynthesis and molecular genetics. Naturwissenschaften, 92(12), 562–577. Turner, G. W., Gershenzon, J., & Croteau, R. B. (2000). Development of peltate glandular trichomes of peppermint. Plant Physiology, 124(2), 665–680. Mint attractiveness to pollinators Garbuzov, M., & Ratnieks, F. L. W. (2014). Quantifying variation among garden plants in attractiveness to bees and other flower-visiting insects. Functional Ecology, 28(2), 364–374. DOI: 10.1111/1365-2435.12178 Rollings, R., & Goulson, D. (2019). Quantifying the attractiveness of garden flowers for pollinators. Journal of Insect Conservation, 23, 803–817. DOI: 10.1007/s10841-019-00177-3 Nichols, R. N., Goulson, D., & Holland, J. M. (2019). The best wildflowers for wild bees. Journal of Insect Conservation, 23, 819–830. Mid-summer forage gaps Timberlake, T. P., Vaughan, I. P., & Memmott, J. (2019). Phenology of farmland floral resources reveals seasonal gaps in nectar availability for bumblebees. Journal of Applied Ecology, 56(7), 1585–1596. DOI: 10.1111/1365-2664.13403 Bee natural history Rehan, S. M., & Richards, M. H. (2010). Nesting biology and subsociality in Ceratina calcarata. The Canadian Entomologist, 142(1), 65–74. Michener, C. D. (2007). The Bees of the World, 2nd ed. Johns Hopkins University Press. Wilson, J. S., & Carril, O. M. (2016). The Bees in Your Backyard. Princeton University Press. #SecretPollinators #NativeBees #WildBees #Peppermint #MintPollinators #SmallCarpenterBees #SweatBees #PollinatorGarden #NativeBeeHabitat #GardenForBees