Every spring, South Florida skies fill with clouds of winged termites at dusk — and Plantation homeowners start finding piles of discarded wings on windowsills. That’s swarm season, and it’s the single most important warning sign your home could be at risk. Here’s exactly what to expect and what to do.
Florida Termite Swarm Season at a Glance
- Peak window: Spring through early summer (roughly February–June), driven by warm, humid evenings and rain
- What a swarm is: Winged reproductive termites (alates) leaving a mature colony to start new ones
- Main local species: Eastern and aggressive Formosan subterranean termites, plus West Indian drywood termites
- Formosan swarms: Typically late spring evenings, attracted to lights — huge, dramatic flights
- The tell-tale sign: Piles of equal-length discarded wings on sills, floors and spider webs
- Why it matters: Swarmers indoors mean a mature colony is already established in or near your home
What Termite Swarm Season Actually Is
A termite swarm isn’t a colony attacking your house — it’s a colony reproducing. When a subterranean or drywood termite colony matures, it produces winged reproductives called alates. On the right evening — warm, humid, often after rain — thousands of them take flight all at once to mate and start brand-new colonies elsewhere. After the flight, they shed their wings, pair off, and the survivors burrow in to become new kings and queens.
In South Florida, the warm temperatures and reliable spring rains make Broward County one of the most active swarm zones in the country. The flights can be dramatic, especially around exterior lights at dusk, and they’re impossible to miss when they happen near your home.
When Swarms Happen in Broward County
Different species swarm at different times, which is why South Florida effectively has a long swarm season rather than one event:
- Eastern subterranean termites typically swarm in late winter into spring, often during the daytime after rain.
- Formosan subterranean termites — the aggressive invasive species widespread across South Florida — swarm on warm, humid evenings in late spring, flying toward lights in big, noticeable numbers.
- West Indian drywood termites tend to swarm in the warmer months, often spring through summer, and don’t need soil contact, so they target attics, eaves and wood furniture.
Because of this staggered calendar, homeowners in Plantation, Sunrise and Davie can see swarming activity across a span of months, not just one weekend.
Critical local tip: A pile of discarded wings indoors is the most overlooked warning sign in South Florida. The swarmers themselves often die quickly, but those identical, equal-length wings on your windowsill, floor or in a spider web are hard evidence that a mature termite colony is established in or right next to your home. Don’t sweep them up before you investigate.
How to Tell Termite Swarmers From Flying Ants
Every swarm season, homeowners confuse termite alates with flying ants. Look closely and they’re easy to separate. Termite swarmers have a straight, uniform body with no waist, straight antennae, and four wings of equal length that extend well beyond the body and snap off easily. Flying ants have a pinched, hourglass waist, bent antennae, and wings of unequal length. If you find a scatter of identical broken-off wings, it’s almost certainly termites — flying ants don’t shed them the same way.
What to Do If You See a Termite Swarm
Seeing a swarm — or its aftermath — is your cue to act, not panic. Follow these steps:
- Don’t ignore it. Indoor swarmers or wing piles mean an active, mature colony nearby. This is the warning that comes before visible structural damage, not after.
- Save the evidence. Collect a few swarmers or wings in a bag. It helps a technician identify the species and pinpoint whether it’s subterranean or drywood.
- Note where you found them. Wings near a specific window, baseboard or light fixture help narrow down where the colony is working.
- Look for mud tubes. Subterranean termites build pencil-width earthen tubes up foundations, in crawl spaces and along walls. Drywood termites leave tiny six-sided pellets instead.
- Schedule an inspection right away. Swarm season is the best time to catch a problem early, before a colony — especially Formosan — does serious damage.
Termites are not a do-it-yourself pest, and the stakes are too high to wait. A swarm is the colony advertising itself; the smart move is to schedule a professional termite inspection in Plantation promptly. The right treatment depends entirely on the species — subterranean termites need soil treatments or baiting systems, while drywood termites may require localized treatment or fumigation — which is exactly why correct identification through proper termite removal and treatment comes first.
Why Formosan Termites Make South Florida Swarms So Serious
Not all swarms carry the same weight, and in Broward County the species that should worry you most is the Formosan subterranean termite. This invasive species is firmly established across South Florida, and it’s in a different league from native termites. A mature Formosan colony can contain several million termites — versus a few hundred thousand for a typical native subterranean colony — and that sheer size lets them consume wood far faster and cause structural damage in a fraction of the time.
Formosan termites are also more aggressive about how they nest. Unlike strictly soil-bound natives, they can build large carton nests inside wall voids and other above-ground spaces when they find a moisture source, which means they don’t always need constant soil contact to thrive. Their late-spring evening swarms around lights are the dramatic, cloud-like flights South Floridians know well. If your swarm happened on a warm humid night and the area around your porch lights was thick with winged insects, Formosan termites are a real possibility — and that’s all the more reason to get a professional inspection rather than wait and watch.
Found Wings on Your Windowsill?
Swarm season is your early warning. We’ll inspect, identify the species and protect your Broward County home before the damage starts.
📞 Call (888) 568-9193Frequently Asked Questions
When is termite swarm season in South Florida?
Swarming runs broadly from late winter through early summer in Broward County, but different species peak at different times. Eastern subterranean termites swarm in late winter to spring, Formosan termites swarm on warm humid evenings in late spring, and drywood termites swarm through the warmer months. The result is a long swarm season spanning roughly February through June.
Does seeing a termite swarm mean my house is infested?
Swarmers indoors or piles of discarded wings strongly indicate a mature colony established in or right next to your home, because termites only produce winged reproductives once a colony is well developed. A swarm outdoors near your property is a warning to inspect. Either way, a swarm signals real risk that should be checked promptly, not ignored.
How do I tell termite swarmers from flying ants?
Termite swarmers have a straight body with no waist, straight antennae, and four equal-length wings that extend past the body and break off easily. Flying ants have a pinched waist, bent antennae, and wings of unequal length. A scatter of identical broken-off wings on a windowsill almost always means termites rather than ants.
What should I do with the wings or swarmers I found?
Save a few in a sealed bag and note exactly where you found them rather than sweeping everything up, since this helps identify the species and locate the colony. Then schedule a professional inspection right away. Swarm season is the ideal time to catch and treat termites early, before they cause costly structural damage.
A termite swarm is South Florida’s loudest pest warning — and your chance to act before the damage is done. If you’ve seen swarmers or discarded wings around your home, don’t wait it out; get ahead of it with expert termite inspection and removal from a team that knows Broward County’s species and seasons. We provide pest control services across Plantation, Sunrise, Davie, Lauderhill, Melrose Park, Pine Island Ridge, Fort Lauderdale and central Broward County. Call us today at (888) 568-9193.