The population of adult diamondback moths will be monitored from early-June through July.
Monitoring is done using pheromone baited traps.
Each week moths caught in the traps are counted, and data for that week, as well as cumulative moth counts, are entered into the table for the appropriate agricultural region. The cumulative total number of moths will continue to rise until the end of the monitoring period. The diamondback moth does not overwinter in the Canadian prairies. Moths are carried into Canada from the southern U.S. on northerly winds in May or June. The traps will indicate if diamondback moth has arrived in a region.