Q.I want to check on best used by dates, best shelf life, temperature concerns for storage
I 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.
Certified GKH Gardening Expert
The publications below say it's best not to store pesticides more than two years.