Based on our degree-day model for Sparganothis fruitworm, flight initiation is expected at around 596 DD (see chart). As of June 3, Sparganothis has accumulated 648 DD (using March 1 as biofix) or 608 DD (using April 1 as biofix). This indicates that flight activity has just started. Growers are advised to place pheromone traps for monitoring this pest at this moment, if they haven’t done so already.