I have 12 dark green arborvitae shrubs and 4 died. I did a soil test and the results were PH=neutral 7.0, Nitroge=verylow, Phosphorous=High, Potassium=low. I would like to replace the shrubs, but need to know what cause them to die. I also have zoysia grass on the lawn which seems to be in a o.k condition. Do I still need to fertilize it and if so which fertilizer would you recommend. Thanks |