stephanie· Premium Member
I have never bothered to test mine, I just plant it where I want and watch it grow. I am surrounded by hemlock,fir,pine,alder trees and they tend to make soil acidic so does scotch broom tons of that crap around here too. If you do the lasagna beds they stay balanced all the time and you don't have to add extra stuff to them. they just do things perfect from the get go.