s l o w l y. There was no point in rushing being the second generation for the year. The plan was to pupate after three weeks as caterpillars and hang around in that stage for the whole winter.
While my Black Swallowtail cats gorged themselves and grew rapidly pupating just ten days after hatching, the Giants seemed to just coast along like lumbering hulks. They were not eating at the same rate nor gaining in size like the Black Swallowtails were. Slow as a snail seems like a good way of describing them. However, they did thrive growing ever so