They grow very slowly the first 2- 3 years in the ground. The 3rd, 4th & 5th years they grow quickly. Typically they produce cherries in the 5th or 6th year though they can and have in the 4th year. It can be the 6th or 7th year when they produce good if you purchase them as 3 inch plugs. Weather and other things are a factor. If you want to know all about them see this thread Carmine Jewell Cherry Yields increasing with age