Wow! Look at the size (length and thickness) of the caterpillars at the end of this week!!! They’re about 5 centimetres long now – How quickly they have grown!!! There is so much caterpillar poo called ‘frass’ in the pot now (the small and larger dark green balls) and lots of rolled up old skin that they have shedded (the small black spiky balls). We think that they will be pupating very soon….Take a look at the photo: