How long does it take a baby millipede to grow to be an adult millipede?

A baby millipede typically takes several months to a few years to grow into an adult, depending on the species and environmental conditions. Growth rates can vary significantly based on factors such as temperature, humidity, and food availability. Generally, most millipedes reach adulthood within one to three years. After reaching maturity, they can live for several years more, depending on the species.