How to identify common Florida garden pests
“Name the pest first. The right fix follows easily once you know what you’re dealing with.”
Florida's warm climate is wonderful for plants and, unfortunately, just as wonderful for the insects that eat them. Pests are active here much of the year, but the good news is that the common culprits are few, recognizable, and manageable once you can identify them.
Correct identification is the whole foundation of dealing with pests, since the right response depends entirely on what you are facing. Here is how to identify the most common garden pests in Palm Beach County by the damage and signs they leave.
Look at the damage first
Often you will notice the damage before the pest itself, and the pattern of damage is a strong clue. Chewed leaves point to caterpillars or beetles, stippled or speckled leaves suggest sucking insects, and sticky residue or sooty black mold signals sap-feeders.
Learning to read these signs lets you narrow down the suspect quickly. From there, a closer look at the plant — including the undersides of leaves, where many pests hide — usually confirms the culprit.
Aphids, whiteflies, and sap-suckers
Aphids cluster on tender new growth and flower buds, sucking sap and leaving distorted leaves and sticky honeydew. Whiteflies — including the rugose spiraling whitefly common on palms and many trees here — flutter up in clouds when disturbed and leave waxy residue and sooty mold.
These soft-bodied sap-feeders are among the most common Florida pests, and the sticky honeydew and black sooty mold they produce are a giveaway. Check leaf undersides, where they congregate.
Scale and mealybugs
Scale insects look like small bumps stuck to stems and leaves and do not move, while mealybugs appear as white, cottony masses in leaf joints and crevices. Both suck sap, weaken plants, and produce honeydew and sooty mold like their cousins.
Because scale can resemble part of the plant, they are easy to overlook until a plant declines. A close inspection of stems and leaf undersides reveals them.
Sticky leaves and black sooty mold almost always mean a sap-sucker — aphids, whiteflies, scale, or mealybugs.
Caterpillars and chewing pests
Chewed, ragged leaves and holes point to caterpillars, including loopers and the large, destructive lubber grasshoppers that appear in spring. Some caterpillars you will want to protect if they are butterfly larvae, so identify before acting.
Look for the insects themselves, their droppings, and the pattern of feeding. Distinguishing a pest caterpillar from a future butterfly is an important part of identification here.
Mites, thrips, and tiny pests
Spider mites cause fine stippling and sometimes webbing, thriving in hot, dry conditions, while thrips rasp leaves and flowers leaving silvery streaks and distorted blooms. Both are tiny and often identified by their damage before you see them.
A hand lens helps with these small pests. Their characteristic damage — stippling, silvering, and distortion — is usually the first clue something is at work.
Identify, then respond
Once you know what you are dealing with, the appropriate, least-harmful response becomes clear, and many pests can be handled gently without resorting to broad sprays. We cover those natural approaches in a companion guide.
If you are not sure what is bothering your plants, bring us a sample or a clear photo of the pest and the damage. We will help you identify it and choose the right fix at the nursery.
Frequently asked questions
How do I identify a garden pest in Florida?
Start with the damage: chewed leaves suggest caterpillars or beetles, stippling suggests mites or thrips, and sticky residue with sooty mold points to sap-suckers like aphids, whiteflies, or scale. Then inspect the plant, including leaf undersides.
What is the sticky stuff and black mold on my plants?
That's honeydew and sooty mold, produced by sap-sucking insects — aphids, whiteflies, scale, or mealybugs. The sticky residue and black coating are a reliable sign of these pests.
What are the white flying insects on my palms?
Likely whiteflies, such as the rugose spiraling whitefly common on palms and trees here. They flutter up in clouds when disturbed and leave waxy residue and sooty mold on leaves below.
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