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Gardening Know How Questions & Answers - https://questions.gardeningknowhow.comI have many containers of fungicides, insecticides and fertilizers, both liquid and granules. I store them during the winter in a garage that does not get colder than freezing when it is 0 outside. I want to know how effective the chemicals I have are. A rose friend told me to discard liquid chemicals that were left on my back porch last December but that the granular products should be OK. Thanks for any advice.
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URL to article: https://questions.gardeningknowhow.com/i-want-to-check-on-best-used-by-dates-best-shelf-life-temperature-concerns-for-storage/
URLs in this post:
[1] https://www.gardeningknowhow.com/plant-problems/pests/pesticides/shelf-life-for-pesticides-and-herbicides.htm: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/shelf-life-for-pesticides-and-herbicides.htm
[2] http://psep.cce.cornell.edu/facts-slides-self/facts/gen-peapp-shelf-life.aspx: http://psep.cce.cornell.edu/facts-slides-self/facts/gen-peapp-shelf-life.aspx
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1 Comment To "I want to check on best used by dates, best shelf life, temperature concerns for storage"
#1 Comment By GKH_Susan On 03/19/2020 @ 12:37 am
The publications below say it's best not to store pesticides more than two years.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/shelf-life-for-pesticides-and-herbicides.htm [1]
http://psep.cce.cornell.edu/facts-slides-self/facts/gen-peapp-shelf-life.aspx [2]