No one can argue that our world is shrinking. With modern trade and transportation systems, environmental change is inevitable. The spread of plants beyond their natural range is one of these changes. Unfortunately, in many cases this is detrimental or even disastrous to the local ecosystems where the plants are introduced. We cannot turn back the hands of time or stop the invasion of alien plants. However, we can and should recognize the problems and take action to keep invasives under control.
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Tree City USA Bulletin © 2016 Arbor Day Foundation.