The Avid ( I also use the generic) is 1/4 tsp per gallon is what the Rosemania website says to use. Bill Waldrop says he use 2 1/2 tsp per 4 gallon. I use a 15 gallon sprayer and I was told to use 2 oz.
I need to spray tomorrow for spider mites because in some of the beds they are really bad. I'm glad I was redoing the show bed yesterday because that's how I found them when I was digging up plants and moving them. When I was waking around just looking at the beds I thought it was just the foliage dying from the cold, boy was I wrong.
It's early for us to have spider mites, but with our wacky winter again everything thinks it's time to do what they do. We have daffodils emerging, trees budding, birds acting like it's spring, and so on.