Q. Newly planted cherry laurel is turning brown and dying. Plenty of water and no visible insect damage. Causes?
Since some of the Cherry Laurels are doing well and some are failing, I would check that the weaker ones are not suffering from too much water. Is the water on the failing ones sitting around those plants longer? Is there another source for the water other than what you are giving? Cherry Laurels for some reason like to be moist, but suffer from too much water.