Narragansett, Rhode Island. Narragansett is a town in Washington County, Rhode Island, United States. The population was 15,868 at the 2010 census. However, during the summer months the town's population more than doubles to near 34,000. The town is colloquially known as Gansett.
While there is not first or last date to fertilize blueberry bushes, the general rule of thumb is to fertilize blueberries in the spring before their leaves have grown in. This is so that the blueberry fertilizer has time to penetrate the soil and make it to the roots of the blueberry bush before it enters active growth. You should be fertilizing blueberries once a year. Typically, they do not need fertilizing more often than this.
But if youâre using a general purpose fertilizer such as ammonium sulfate, here are some general guidelines for fertilizing blueberries: 1  The amount of fertilizer to apply will depend upon the type of soil you have, its fertility level, the type of fertilizer youâre using, and the age of your blueberry bushes. Using ammonium sulfate as an example, apply 2 tablespoons in early spring, and another 2 tablespoons in late spring for first year bushes.