An invasive plant is one that is not native to an area, can reproduce quickly and spread over large areas in a relatively low amount of time. Because of their reproductive abilities, these plants can choke out native species; this creates a problem for not only the direct local ecosystem, but in some way for the entire ecosystem of the planet.
Most, but not all, invasive plants were brought to the United States as ornamentals for landscapes. Sadly, many nurseries still sell invasive plants due to their popularity and an uneducated -- and sometimes uncaring -- general public.
According to the University of Maine Cooperative Extension, invasive species are second only to loss of habitat as far as threats to global biodiversity go. While it may not seem like a large threat, choking out native species is detrimental. These quick-growing invasive species outcompete our precious natives for sunlight, vital nutrients from the soil and precious space.
Some may think this still doesn't sound like a problem. What's wrong with plants taking over for other plants? A lot, actually. Our native plants are homes, food sources and vital players in local habitats. Some species are so aggressive that they may wipe out almost all native plants in an area.
Forests, fields and waterways are all invaded by these unlikely monsters, causing messes that are not easily cleaned up by man.
How can you prevent invasive species? It's rather simple if you know what you're looking for. Before adding to your landscape or garden, research the plants you are interested in. Native plants are always the way to go, but there are many non-native species that are not invasive. Only shop from garden centers and nurseries that refuse to sell invasive plants.
For more information, visit Invasive.org, a one-stop information hub on invasive plants, insects, pathogens and animals. Your local university's extension service should also have detailed information on invasive plants.
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