Our Monarch caterpillars have finally arrived! To ensure the highest survival rate they will be reared in a terrarium in Mill River Park Collaborative's office before being released at the Monarch Waystation in the Park's playground in late August or early September. When they are being raised in an enclosed environment cleanliness is very important. The lining of our terrarium will be changed daily because the caterpillar waste or "frass" can become moldy and resulting germs from the trapped droppings can make the caterpillars sick. Yellowing or dry leaves also have to be removed daily, and fresh leaves provided, so that the caterpillars can receive the maximum moisture and nutrition from the plants. The lifecycle from egg hatching to butterfly usually takes about one month, so be sure to check often for updates on our small, new friends!