Key takeaways
- Florida has about 75 whitefly species; ficus, rugose spiraling and Bondar's nesting whiteflies are the big landscape pests in South Florida.
- Whiteflies can go from egg to adult in about 4 weeks in summer, so populations rebuild quickly after a spray that misses the nymphs.
- Soaps and oils work only on contact and need repeat applications about 7 to 10 days apart with full coverage of leaf undersides.
- UF/IFAS says to treat only after you confirm whiteflies, and HOA common areas and commercial properties need a hired pest control company.
- Whiteflies rarely kill large, healthy trees, shrubs and palms; young, new or stressed plants are most at risk.
In this article
Professional pest control helps with whiteflies when the infestation is too big, too high or too persistent for sprays from the garden center: tall ficus hedges, palms, shade trees, HOA common areas and yards that get reinfested from next door. A professional confirms which whitefly you have, treats the plants in a way that reaches the insects and protects their natural enemies, and keeps checking so a new wave is caught early.
That does not mean every whitefly problem needs a service call. On small plants and light infestations, there is a lot you can do yourself. This guide explains which whiteflies attack South Florida landscapes, what homeowners can realistically handle, where DIY tends to fail and what a professional treatment involves.
Which Whiteflies Attack South Florida Landscapes?
Whiteflies are tiny, moth-like insects with white, powdery wings that suck sap from leaves. Florida has about 75 whitefly species, according to UF/IFAS entomologist Catharine Mannion, and several are serious pests of ornamental plants in Miami-Dade, Broward and Palm Beach.
| Whitefly | Main hosts | What you notice |
|---|---|---|
| Ficus whitefly | Ficus, especially weeping fig (Ficus benjamina) hedges | Yellowing leaves, then heavy leaf drop |
| Rugose spiraling whitefly | Gumbo limbo, coconut and other palms, black olive, avocado, giant white bird of paradise | White waxy spirals and fluffy wax under leaves, sticky honeydew, black sooty mold |
| Bondar’s nesting whitefly | Ficus, hibiscus, guava, citrus | White wax and nymphs under leaves; sticky honeydew |
| Silverleaf and citrus whiteflies | Many ornamentals, annuals and citrus | Clouds of adults when plants are disturbed; pale, spotted leaves |
The rugose spiraling whitefly was first found in Miami in 2009 on gumbo limbo, and UF/IFAS Extension in Miami-Dade reports it on more than 60 plant species in 17 counties. For a full list of warning signs, see whiteflies in South Florida: signs of infestation, and for identification photos, visit our whitefly pest library.
Why Whiteflies Are So Hard to Control
Three things make whiteflies frustrating for homeowners.
They breed fast in warm weather. UF/IFAS EDIS reports that whitefly eggs hatch in 4 to 12 days and development from egg to adult takes about 4 weeks in summer, compared with up to 6 months in winter. South Florida’s long warm season keeps them cycling for most of the year.
Source: UF/IFAS, Whitefly in the Landscape (Mannion)
Most of the colony is hidden and does not move. After a short crawler stage, nymphs settle on the undersides of leaves, flat and smaller than a pinhead. The flying adults you see are only a fraction of the population, and they live just a few days.
Wax protects them. UF/IFAS notes that the white waxy coverings protect the insects and can block contact insecticides, a particular problem with the rugose spiraling whitefly.
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What You Can Do Yourself
Start with steps that are cheap, low-risk and recommended by UF/IFAS.
- Confirm the problem. Ficus also drops leaves when it is stressed by drought or cold. Turn leaves over and look for eggs, nymphs, white spirals or wax. The University of Florida’s whitefly FAQ is blunt: never apply an insecticide for whitefly unless you have confirmed you have a whitefly problem.
- Scout the right stage. For ficus whitefly, look for immature stages on leaf undersides rather than counting adults. For rugose spiraling whitefly, the spiral egg patterns are easy to spot.
- Watch for ants. Ants feed on honeydew, so ant trails on a hedge are a cue to check for sucking insects.
- Wash small infestations off small plants with a strong stream of water.
- Use insecticidal soap or horticultural oil on reachable plants. These work only on contact, so wet the leaf undersides thoroughly and repeat about every 7 to 10 days. Avoid applying them in the heat of the day, since UF/IFAS warns they can damage plants at high temperatures.
- Keep plants healthy. Proper watering and fertilizing help trees and shrubs tolerate insect stress.
- Protect natural enemies. Lady beetles and tiny parasitic wasps attack whiteflies; in southern Florida, the wasp Baeoentedon balios has become the most consistent parasitoid of ficus whitefly, according to UF/IFAS. UF/IFAS recommends minimizing contact insecticides when you see signs of parasitism.
You usually do not need to cut down or remove an infested tree. UF/IFAS Extension in Miami-Dade says simply: “You don’t need to prune or remove your beautiful tree.”
Where DIY Whitefly Control Falls Short
Garden-center products can work on a potted hibiscus. They struggle on a 10-foot ficus hedge or a row of coconut palms. Common problems include:
- Coverage. Contact sprays must reach every leaf underside. On tall, dense hedges and palms, that is nearly impossible with a pump sprayer.
- Short-lived sprays. UF/IFAS notes that foliar sprays often need repeated applications because they do not last long, and they usually do not provide long-term control.
- Killing the helpers. Broad-spectrum contact insecticides such as pyrethroids give quick knockdown but disrupt the natural enemies that keep whiteflies in check.
- Overusing one product. UF/IFAS warns against overusing the neonicotinoid class of insecticides and against using the same insecticide on both foliage and soil.
- Wrong rates and dry soil. UF/IFAS reports that drought reduced the activity of some systemic products and that some applications were made below label rates.
Many of these errors are covered in detail in the common mistakes in whitefly treatments.
DIY or Professional? A Quick Comparison
| Situation | DIY is reasonable | Call a professional |
|---|---|---|
| A few potted or small shrubs | Yes: water sprays, soap or oil | If it keeps coming back |
| Ficus hedge over head height | Hard to cover | Yes |
| Coconut palms, gumbo limbo, black olive and other large trees | Hard to reach | Yes |
| Fruit trees you harvest | Only with labeled products and timing | Recommended |
| Repeated infestations after several sprays | Rethink the approach | Yes |
| HOA common areas, swales and commercial landscapes | Not an option for residents | Required: UF/IFAS says the property owner needs to hire a pest control company |
The HOA situation deserves its own look. The University of Florida’s whitefly FAQ notes that in many counties homeowners are responsible for swale trees in front of their property, while HOA public areas, right-of-way, commercial and industrial areas require a hired pest control company. Our article on how whiteflies impact HOA communities explains how associations can coordinate treatment.
What Professional Whitefly Control Involves
A good professional service follows the same integrated approach UF/IFAS recommends, with the equipment and licensing to apply it at scale.
- Identification first. The whitefly species determines which plants are at risk and how to treat them.
- Targeted treatment. For large trees and palms, UF/IFAS favors systemic insecticides applied to the soil or trunk when possible, which generally give about 6 to 12 months of control and avoid the foliar sprays that kill natural enemies.
- Licensed application. In Florida, anyone paid to apply pesticides must hold the proper license, and labels set the rates, sites and re-entry times.
- Monitoring. UF/IFAS recommends monitoring pest populations to decide when to retreat, instead of spraying on a calendar.
Toro’s whitefly control service starts with a free inspection of your ficus hedges, palms and trees, including the undersides of the leaves, to identify which whitefly you have and how heavy the infestation is. You get a clear plan and a quote before any work begins. Toro then treats the infested plants and checks your ficus for early signs of new whiteflies, with technicians trained at the TORO Institute alongside Toro’s on-staff entomologists. If the bugs come back, so will Toro, at no additional cost to you.
What to Expect After Treatment
Patience is part of the plan. UF/IFAS notes that leaf drop, sooty mold and white waxy flocks do not disappear right away, even when the whiteflies are under control, and it advises against applying more insecticide unless it is clearly necessary.
- Sooty mold is a fungus growing on honeydew, not a plant disease, and it usually weathers away once the infestation is controlled. Pressure washing is often used to clean hard surfaces. Learn more in why your hedge is turning black.
- Bare ficus hedges usually grow back. UF/IFAS says that in the vast majority of cases the plant will survive.
- Large, healthy trees and palms are rarely killed by whiteflies. Young, newly planted or stressed plants are the ones to watch most closely.
Keep checking leaf undersides every few weeks during the warm months, and call at the first sign of new activity. Catching whiteflies early is always easier than rescuing a bare hedge.
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305-594-4767Frequently Asked Questions
Can I get rid of whiteflies myself?
How long does professional whitefly treatment take to work?
Do I need a license to treat whiteflies?
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Are whiteflies harmful to people or pets?
Sources
- Whiteflies on Landscape Ornamentals, UF/IFAS Extension (EDIS ENY-317)
- Whitefly in the Landscape, UF/IFAS Tropical Research and Education Center (Mannion, 2012)
- Frequently Asked Questions (FAQs), University of Florida Department of Entomology and Nematology
- Common questions about the Rugose Spiraling Whitefly (Aleurodicus rugioperculatus), UF/IFAS Extension Miami-Dade County
- Balios Eulophid Baeoentedon balios Wang, Huang & Polaszek (Insecta: Hymenoptera: Eulophidae), UF/IFAS Featured Creatures (EDIS EENY-676)
Educational content. This article is for general information about pests in South Florida and is not medical, legal or professional advice. If you have a bite, sting or allergic reaction, contact your doctor; in an emergency, call 911. Pest problems vary from home to home, so a licensed professional should inspect before treatment. When using any pesticide, always read and follow the product label.
