Shower landscape plants with hot water (113°F) to flush frogs from infested plants, and then hand collect the frogs. Potted plants can be placed in a sink or tub and showered with 113°F water for 3 minutes, followed by 1 minute of cold water to cool off the plant. This treatment will kill any frogs or eggs in the plant. Be sure to measure the water temperature, because cooler water is not effective and water that is too hot may damage the plant (113°F should feel hot to the touch, but not scalding). If you have your hot water heater set to “warm”, your hot tap should run at about 120°F. (see Research section for list of tested plants and photos of damage symptoms.)

Plant in hot shower

Photo by S.Chun, UH–CTAHR