Certified GKH Gardening Expert
Ricin, which is the chemical culprit responsible for the plants toxicity, will break down at around 140 degrees Fahrenheit. this being said, if your compost pile is properly maintained and large enough then you will have no problem composting the plant. If you are concerned that the temperature will not reach 140 in your pile then I would stay away from composting it.
thank you; do you take the temperature of the compost deep in the center or at the bottom to determine the temperature?