The caterpillars are now going down into the soil to change into a chrysalis in their new house (a large plastic container), I had 8 yesterday that still had to go down into the soil, then six this morning and during the day 3 more had disappeared into the the soil. I will miss picking leaves daily for them but pleased that the majority have survived and hopefully will emerge in the Spring as beautiful Lime Hawkmoths! It has been a fascinating experience watching their progression from an egg to a caterpillar that is ready to pupate!
Latest update! The two remaining caterpillars have now joined the others in the soil (15th August).
After about 10 days the hardened pupa can be removed for winter storage!