The invasive stinging ants were found on Thursday.
Punahou School has delayed the sale of plants at its annual Punahou Carnival after little fire ants were discovered among 400 plants donated by Oahu nurseries.
An Oahu Invasive Species Council staffer discovered the ants on Thursday while doing routine inspections of donated plants, as it does annually alongside Hawaii Ant Lab.
Department of Agriculture plant quarantine inspection staff were dispatched to survey and isolate the infested plants, and the school has delayed the plant sale pending the results of a DOA survey tomorrow.
A second survey, performed on Friday morning, did not find further infestations in the plants.
Little fire ants are considered a serious pest, able to inflict painful stings and welts. They can also cause blindness in pets.
“We appreciate the school’s concern and exemplary cooperation in helping to stop the spread of invasive pests,” DOA Director Sharon Hurd said in a press release.