In addition, homeowners typically do not have the proper equipment to make an effective application to prevent diseases. If a disease occurs regularly, preventative spraying is recommended if the disease can kill the turf. Some diseases like brown patch just disfigure the lawn for a time. When the weather pattern changes that favored disease development the disease stops and the turf recovers without a fungicide. These disease control recommendations contain fungicides that have proven to be effective under Delaware conditions when used according to instructions on the manufacturer's label.
Trade names appear for simplicity.
No endorsement of such products, nor criticism of similar products not listed, is implied or intended. Numbers within parentheses represent maximum recommended spray intervals. We have not been successful in controlling fairy ring with chemicals. For best results, aerify affected areas, maintain adequate soil moisture, and apply nitrogen to mask symptom expression. Prostar has proven to be an effective fungicide against some species of fungi that cause fairy rings.