For warm\nseason grasses of the south like St Augustine, Bermuda, Zoysia, etc. keep\ngrowing strong. The growing season is just longer in the south and building up\na healthy plant before the grass goes dormant for the winter is really\nbeneficial. We recommend feeding your lawn until soil temperatures fall to 70\ndegrees. \n\n\n\nCustomer\nQuestion: Why Do Saint Augustine Lawns Go Brown In Winter?\n\n\n\nNot all lawns will go brown in winter, and\nthere can be many factors which can attribute to a lawn either going brown or\nstaying green over the winter time. But the main reason is that lawns naturally\nbecome dormant or semi dormant over winter, and in doing so - some will\nnaturally lose their green color and brown off. Warm season grasses thrive in\nthe hot weather and therefor suffer in the cool weather. Luckily they come\nright back in the spring!\n\n\n\n\n\n\n\nFall Weed Control: Typically many winter annual weeds are really cool season weed types and can be managed by applying a pre-emergent herbicide around September\/October. Selective, post-emergent herbicides can be applied as necessary ---- use sparingly as the warm season grass does not have the ability to grow or fight off the weed control itself and can be effected more dramatically than the spring time before the growing season. \n\n\n\nFall Irrigation: Without regular rainfall you should continue to water\nto prevent drought stress. After the lawn has become dormant, water as needed\nto prevent excessive dehydration. No more than 1 inch needed a week including\nnatural rain.\n\n\n\nFall Mowing: Continue to mow at the normal mowing height until the\nweather starts to cool in the fall. Once nighttime temperatures fall below 70\ndegrees regularly, raise the mower cutting height \u00bd to 1 inch to allow more\nleaf surface. This will allow the turf to become acclimated and insulate the\nroots longer. Once fully dormant, cut slightly lower than normal to\nallow airflow and reduce disease.