RANGELAND WEED
In 1946, imported beetles were released against toxic St. Johnswort in northern California; by 1957, the weed had fallen to less than 1% of its former abundance
In 1988, USDA scientists released just 88 flea beetles in North Dakota; their descendants multiplied into hundreds of millions across North America
Rare yellow flower unseen on California public land for 68 years resurfaces after cattle clear invasive weeds
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