Chilli Thrips and Pink Hibiscus Mealybugs Invade Houston

Two insect pest species that made news last year because of their first appearance in Texas are causing serious problems for homeowners and landscapers in the Houston area. While these pests are currently in the landscape, they have the potential to move into production greenhouses and nurseries.

Populations of the pink hibiscus mealybug were recently confirmed in Brazoria, Galveston and Harris counties, triggering TV-news coverage and subsequent reports from homeowners in a number of areas in Houston. The Texas Department of Agriculture, after confirming the pink hibiscus mealybug infestations, have initiated surveys of surrounding areas and will be making releases of natural enemies. Biological control has provided excellent control in Florida and will likely be the long term solution in Texas. Using reduced risks insecticides such as insecticidal soaps and oils, in combination with good sanitation practices should help homeowners minimize plant losses and facilitate establishment of released natural enemies.

A large population of chilli thrips was also detected recently in Houston. A survey was conducted of the entire Medical Center complex and chilli thrips or signs of chilli thrips were found at every rose bed. Chilli thrips were also found on other roses outside the Medical Center. The actual distribution of the infestation is currently unknown.

It is important to remember that chilli thrips attack more than just roses. They can attack a wide range of landscape plants, horticulture crops and row crops.

For the most up to date information on chilli thrips in Texas visit http://chillithrips.tamu.edu/. I will be updating the site this weekend. New information should be posted by August 5th.