Pink Hibiscus Mealybug (PHM)
Detected in northwest Manatee County in September 2005 on hybrid hibiscus plants.
By mid-December 2005, DPI inspector had released two species of beneficial, parasitic wasps (size of gnats):
- 1,200 beneficial wasps released at three sites (approximately 3,600 thus far).
- The wasps are having a visible, positive effect as seen in locally reduced infestations.
PHM also observed on other ornamentals: impatiens, viburnums, wedelia and others.
- Insecticidal applications on infested plants: it is very Important to use low residual products (e.g., horticultural oils and insecticidal soaps) that will not kill these parasitic wasps. They ARE working!
- Prune off heavily infested stems.
- Double bag for disposal in landfill.
- This sounds counterproductive, but…leave a small section of the plant unsprayed to provide a food source for these beneficial wasps.
- Be responsible— tarp vehicles to prevent dispersal along maintenance routes.
- The Florida Department of Agriculture and Consumer Services requests that commercial applicators and homeowners report infestations at the following number in order to initiate a release of the beneficial parasitic wasps:
Pink Hibiscus Mealybug
- Pink Hibiscus Mealybug, Maconellicoccus hirsutus (Green) --EDIS
- PHM Fact Sheet
- PHM Hosts