What is the cause of the discoloration of the leaves and what should I do?
Since the trees were planted 6 months ago (in the Southern Hemisphere) the leaves have had brown edges. The trees have definitely been receiving enough water. In fact I'm more concerned that the roots may have had too much water because the soil was unusually moist throughout our southern hemisphere summer. I'm watering less now. Otherwise the trees look ok with catkins appearing and new green leaves appearing as well. Though the overall growth of all three planted trees seems slow. I can post some photos if you like. Thank you, Jack.