During the past few weeks numerous people have contacted the Okaloosa County Extension Office seeking diagnostic assistance and control options concerning fall armyworms and sod webworms in turfgrass. This includes farmers with these critters in their pastures and homeowners whose lawns are being eaten away by these hungry caterpillars. We’ve even had requests for help from a local landfill and from a local airport with grass runways.
Sod webworms and fall armyworms
Updated 08-19-2010 at 02:09 PM by LarryWilliams
Gray leaf spot is a common fungal disease of St. Augustinegrass. Wet conditions promote this fungus. This includes high humidity, heavy dews and particularly frequent afternoon and evening rains. It’s primarily a disease of St. Augustinegrass. The Florida Lawn Handbook states, “St. Augustinegrass is the only important warm-season turfgrass that is seriously affected.” I’ve seen St. Augustinegrass and centipedegrass growing intermingled with the St. Augustine infected with gray leaf spot and the
Take-all root rot is a disease that often affects lawns at this time of year, particularly St. Augustinegrass. Symptoms observed above ground are due to a soil borne fungus attacking the root system. By the time leaf symptoms are apparent, the root system has already been severely damaged.
Hendry County Extension Agent, Gene McAvoy and I provide advice on this disease in today’s article.
Leaf symptoms first appear in irregular patches as yellowing of lower leaves
Some non-native plants are invasive in Florida. Kudzu and Chinese tallow (popcorn tree) are two of the more common examples.
Gary Knox, UF/IFAS Extension Horticulturist, encourages home gardeners to look for noninvasive types of invasive landscape plants in today’s article.
Chinese privet was long grown as a shrub or hedge plant in urban landscapes but now is found throughout Florida's forested areas. Unfortunately, many other non-native ornamentals have been implicated
Wet weather promotes foliage diseases in our landscapes, lawns and gardens. Many fungal diseases do well during extended wet weather. This includes heavy dews, high humidity and especially frequent late afternoon and evening showers.
When wet weather occurs, keep a close watch for foliage diseases in your lawn, vegetable garden, fruit trees, landscape shrubs, etc. Most foliage diseases require wet conditions and as a result are more prevalent during wet weather.