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So here's some resources for how to get rid of Tree of Heaven. From the USDA site, a PDF a few years old: https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb5410131.pdf
Tree of Heaven is considered a noxious weed in every state & US region I've looked at so far. Here in WA it's a Class C noxious weed, which means it's considered highly invasive plus it has an impact on agriculture throughout the state. https://agr.wa.gov/departments/insects-pests-and-weeds/weeds/tree-of-heaven
https://www.ecolandscaping.org/05/landscape-challenges/invasive-plants/tree-of-heaven-an-exotic-invasive-plant-fact-sheet/