Pest Organisms / Common Pillbug
Seasonality
for Common Pillbug
Pillbugs usually pass the winter as adults, sheltering wherever the microclimate stays favorable, such as heated buildings or urban woodlands. Source: https://extension.missouri.edu/publications/g7362 Once spring arrives, the overwintered adults become active again and begin mating. Source: https://extension.missouri.edu/publications/g7362