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Eating with a Conscience

Choosing organic food to protect health and the environment

View a different non-organic crop

Summer Squash

Below are the pesticides with established tolerances (residue limits for pesticides used in the U.S. or by countries exporting to the U.S.) for summer squash. While not all the pesticides on the list are applied to all summer squash, there is no way to tell which pesticides are applied to any given piece of conventional produce on your store shelf. You may consider talking to the farmers at your local farmers market about the pesticides they use, but eating organic is the only way to know for sure.

California Farmworker Poisonings, 1992–2010: 3 reported (CA acreage: 16,000). These poisoning incidents only represent the tip of the iceberg because it only reflects reported incidents in one state. It is widely recognized that pesticide incidents are underreported and often misdiagnosed.

Pesticide Tolerances —Health and Environmental Effects: The database shows that while summer squash grown with toxic chemicals show low pesticide residues on the finished commodity, there are 75 pesticides with established tolerance for summer squash, 31 are acutely toxic creating a hazardous environment for farmworkers, 69 are linked to chronic health problems (such as cancer), 13 contaminate streams or groundwater, and 64 are poisonous to wildlife.

beePollinator Impacts: In addition to habitat loss due to the expansion of agricultural and urban areas, the database shows that there are 29 pesticides used on summer squash that are considered toxic to honey bees and other insect pollinators. For more information on how to protect pollinators from pesticides, see Beyond Pesticides' BEE Protective webpage.

  • This crop is dependent on pollinators. checkmark
  • This crop is foraged by pollinators. checkmark




Acetamiprid (A, C, B)

Acibenzolar-S-methyl (C, W)

Bensulide (A, C, W, B)

Bifenazate (C, W, B)

Bifenthrin (A, C, SW, W, B)

Boscalid (C, W)

Buprofezin (C)

Captan (A, C, W)


Carfentrazone-ethyl (W)

Chlorantraniliprole (C, W)

Chlorothalonil (A, C, GW, W, LT)

Clethodim (A, C)

Clomazone (A, C, W)

Crotoxyphos (A, C, B)

Cryolite (C)

Cyazofamid (C, W)

Cyfluthrin (A, C, W, B)

Cymoxanil (C)

Cypermethrin (A, C, W, B)

Cyprodinil (W)

Cyromazine (C, GW)

Deltamethrin (A, C, W, B)


Dicofol (C, W, LT)

Dimethomorph (C, W)

Dinotefuran (C, B)

Diquat Dibromide (A, C, W)


Ethalfluralin (A, C, W)

Famoxadone (C, W)

Fenamidone (C, W)

Fenpropathrin (A, C, B)

Fenvalerate (C, W, B)

Flonicamid (W)

Flubendiamide (C)

Fludioxonil (C, W, B)

Fluopicolide (C, W)

Fosetyl-aluminum (A, C)

Glyphosate (C, SW-URBAN, W)

Halosulfuron-methyl (C)

Imidacloprid (A, C, W, B)

Indoxacarb (A, C, W, B)

Kresoxim-methyl (C, W)

Lambda-cyhalothrin (A, C, W, B)


Mancozeb (C, W, B)

Mandipropamid (C, W)

Maneb (C, W)

Metalaxyl (A, C, W)

Methoxyfenozide (W)

Methyl bromide (A, C, W)

Mevinphos (A, C, W, B)

Myclobutanil (C, W)

Naled (A, C, GW, W, B)

Oxamyl (A, C, GW, W, B)


Permethrin (A, C, GW, W, B)

Propamocarb hydrochloride

Pymetrozine (C)

Pyraclostrobin (C, W)

Pyriproxyfen (C, W)

Sethoxydim (C, B)

Spinetoram (C, B)

Spinosad (C, W, B)

Spiromesifen (W)

Spirotetramat (C, W)

Tebuconazole (A, C)

Thiamethoxam (C, B)

Thiophanate-methyl (C, W)

Trifloxystrobin (C, W)

Triflumizole (C, W)

Trifluralin (C, SW, GW, W, LT)

Zoxamide (C, W)
