@Render Thanks for handy reference guide. But what if my local ants are peppermint proof? Seriously, there is a 7 lane ant highway going right through my mint patch. Fortunately, it is in a far corner of the yard, away from the house. I do find the rest of the chart works as stated. I love my rosemary. Keeps bugs away, except for the dear Sister Bees who feed on the rosemary flowers that bloom all winter here.