My lot has had organic treatment for 4 years. I have seven cedar elms, with the tops in full sun. They are old - 30+feet. one of them is sick
It has some branches that are dead and other branches are sparcely leafed. They are too tall to spray a treatment. no sign of fungus or bugs.
twice a year the lot gets dried molasses, tx. green sand, lava sand, compost and mulch. the roof flare is exposed. I am stumped. can anyone help?