Sarasota County, FL
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Treating Bromeliads
Bromeliads are most effectively treated for mosquito larvae using BTI. BTI (also known as Bacillus thuringiensis israeliensisis) is a naturally occurring soil bacteria that will not harm people, animals, most other insects or plants. It's an environmentally safe biological control that only targets mosquitoes, black flies, and fungus gnats.
Where can I purchase BTI?
- BTI can be purchased at most home improvement retailers or online.
How often should I use BTI to treat my bromeliads?
- It is recommended to treat bromeliads or other water-holding plants every week during rainy season. The typical rainy season in southwest Florida is June 1 - September 30. Check the individual product guidelines or look for the online SDS and Label for additional instructions.
- BTI is only effective when released into water. For bromeliads, this would be directly into the plant itself, not the soil.
- You can check for mosquito larvae in your bromeliads by using a designated turkey baster. Do not use the same one for cooking.
Is there an easier method of preventing mosquitoes in bromeliads?
- Yes – removal. Some bromeliad species spread quickly and may be difficult to manage, so in some cases, removal of your bromeliads may be the best option. Removal will eliminate mosquito breeding sites and potential mosquito-borne disease.
- Prior to removing bromeliads, reference or contact UF/IFAS to ensure your species are not threatened or endangered. The local Master Gardeners' Plant Clinic can help identify your species of bromeliad.
BTI will reduce future generations of mosquitoes, but it cannot control adult mosquitoes. For information on adult mosquito reduction, check out our Treatments page.
Florida's Native Bromeliads - yes, some species are OK!
Friendly Florida Landscaping™ Guide - pick your criteria to receive information on recommended replacements
FFL™ Guide to Plant Selection & Landscape Design - additional guides and resources also available
Low-Maintenance Landscaping Blog Series - tips and tricks for easy care plants
Check out these printable bromeliad resources from Sarasota County Government and UF/IFAS:
