Throw Japanese Knotweed onto the property of people you hate to cause them 1000s of dollars of damage.
Japanese knotweed grows up to three inches per day in season, reaches up to 10 feet tall, and roots can grow 20 feet deep. The rhizomes can spread up to 70 feet from the nearest stem.
With this type of growth rate and pattern, it can damage home foundations, driveways, walkways, and gardens, crowding out other plants.
It can re-grow from a tiny bit of the plant, often as small as a half-inch. Plus, its underground network of rhizomes sends out lateral shoots and roots that can lie dormant for years. This makes it extremely difficult to eradicate.
The U.S. Department of Agriculture estimates it has invaded 41 states. Continental states are shown in the map below. It has also invaded Alaska but not yet Hawaii.
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I saw japanese knotweed as a powderbeing sold in health stores. Is it good for you at all?
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