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The Tree of Heaven crowds out native species.
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1784 was when the Tree of Heaven was introduced to the USA.
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The Plant Protection Act of 2000 prohibits or
restricts the importation, exportation, and the interstate movement of plants, plant products, certain
biological control organisms, noxious weeds, and plant pests.
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.