Worms by HORNWORMS 12 - 15 live hornworms . enough food to grow to adult size. Place all cups upside down on a vented rack so the cup can get lots of air and clean the lid every day. keep at 50 degrees to make them grow slower and 88 degrees to make them grow faster. great for picky eaters. These worms come smaller so you can grow them to any size you want.