I have 5 Raywood Ash trees and 3 of them are having problems. They are not growing as fast and the leaves look a lighter green leaves with spots on them. One tree has leaves that are turning brown at the top. I water them 2 to 3 times a week within a concrete cut out of 4x4 an about 3" deep...
Does anyone use the arbor jet MinJet system for Iron injections? Arborjet says MinJet + RootJet is good for 3 years? I'm looking to eliminate jug hanging iron sulphate but need info on effectiveness and cost effectiveness.
