The evidence

The evidence

I accidentally conducted a test under controlled circumstances, and was amazed by the results.

Method and equipment:

I brought some nice clean looking peppermint in from the garden this morning, and left it in a jar, and the picture above shows what remained in the jar at the end of the day. One fat caterpillar, some chewed up stalks, and a big pile of poo.


  • Green loopers much prefer mint to lemon balm
  • They  can defecate twice  their own body weight in a 12 hour period.


My proper place is obviously at primary school, and not at the front of the class. But at least this is an interesting variation on measuring how much leaf a caterpillar has  devoured.