Thank you for contacting the UVM Master Gardener Helpline with your question about Jerusalem Artichoke composting.

The only article I found that referenced the allelopathic properties of Jerusalem Artichokes is from the University of Florida Extension:

https://gardeningsolutions.ifas.ufl.edu/care/weeds-and-invasive-plants/allelopathy.html. Specifically this quote:

“Allelopathy in the Garden

Some plants are used for their negative allelopathic effects because they are actually beneficial for gardeners. For example, rye, fescue, and wheat suppress certain weed growth when used as a cover crop or when old parts of the plant are retained as mulch (in this practice the mulched plant parts are referred to as residue). When sunflower and buckwheat are grown as a cover crop, their residues reduce weed pressure in fava bean crops. Jerusalem artichokes have also been observed having residual effects on weed species.” End Quote

I consulted with the helpline leaders, and they recommended the following: “Some info suggested that the leaves and stems can have allelopathic chemicals so if they are worried, keep them out of the pile. “

“In cold compost systems, tubers may sprout. In hot compost systems, I would think all would be fine to compost.” End of quote

You might also find this article published on the UVM Extension Resources page interesting: “The Jerusalem Artichoke: An Unsung Hero”: https://www.uvm.edu/news/story/jerusalem-artichoke-unsung-hero

I hope this information is helpful. If you have any further questions, please feel free to reach out.