Pest Organisms / Brown Marmorated Stink Bug
Seasonality
for Brown Marmorated Stink Bug
The invasion is a fall event. Adults move toward overwintering sites in early autumn — Ohio reports flights starting in early September and peaking in late September or early October — before slipping into shelter. Source: https://ohioline.osu.edu/factsheet/ent-90 Source: https://ipm.ucanr.edu/PMG/PESTNOTES/pn74169.html They emerge in spring — Ohio around early May, Pennsylvania late April to mid-May — then mate and lay eggs through summer. Source: https://ohioline.osu.edu/factsheet/ent-90 Source: https://extension.psu.edu/brown-marmorated-stink-bug