In south Florida, which outdoor roach is most common?

• A. German
• B. Asian
• C. Australian
• D. Florida woods

Answer: (C)

In warm, humid environments like south Florida, the species that shows up most often outdoors around homes and landscapes is the Australian cockroach. This roach is well adapted to outdoor life in Florida’s climate, thriving in outdoor sites such as mulch, flower beds, around trash or compost piles, and along building perimeters. It can fly, which makes it easy for it to move between outdoor habitats and to explore inside spaces when conditions push it indoors, helping it establish larger outdoor populations.

The German cockroach is primarily an indoor pest, favoring warm, protected indoor harborage like kitchens and bathrooms, so you’ll see it more inside than outside. The Asian cockroach resembles the German in appearance and can be found outdoors, but it is not as widespread outdoors in Florida as the Australian roach. The Florida woods roach stays more in natural areas, leaf litter, and woodpiles away from human structures, so it’s less common around homes.