I always use wild rocket as a gutload along with carrot, apple, etc. Locusts love rocket more than anything (apart from wheat grass)! Just make sure that you don't use lettuce (this has pretty much no nutrients in it at all!) or broccoli and spinach. These both contain oxylates that bind to the calcium which prevents absorption by the chameleon. I but rocket in packets from the supermarket. A tip that Bridgofaith gave me was to store it in an open tub in the fridge with a damp paper towel over the top and it lasts for over a week!