Oils and Neem
I am fighting ants in my garden. I do know they are not always considered a pest, but I am infested with them all over the yard and I am taking the population down a little.
I dropped off a root sample from a bean plant that has root aphids and white cottony spots on it to the extension office for a for sure diagnosis. In the meantime I am fighting them. The ants are running up and down the stems into the root systems, and when I pulled up a plant, I actually watched the ant go over and pull off a bit of the cotton stuff anf go off with it. I intend to kill the ants, and the aphids.
My questions are this. I am mixing up a soil drench of garlic and habanero pepper, and an oil. Does that oil need to be sesame? Why do most bought sprays use sesame? It is more expensive than most other oils.
Also I have a container of neem oil, but it is probably 10 years old. Kept closed and cool. Is it bad, or does it now loose it's potency? Thanks so much for any info!