what fertilizer to give to my weeping flowering cherry tree. thank you
Without a soil test, you'll never know for sure. Some advise a slow-release all-purpose, balanced fertilizer in spring when leaves are emerging. Balanced means the NPK numbers are similar, 10-10-10 or 8-10-8 for instance. Nitrogen leaches through the soil every season but phosphorus and potassium build up and can reach toxic levels. Some soils are naturally high in phosphorus and adding more creates problems. You can look to your state's cooperative extension service for general info on soils in your area. Some gardeners choose to loosely rake in 2 inches of compost every year as an alternative to fertilizer. If your tree doesn't look healthy, your first step is a soil test.