SAN DIEGO (AP) - More than 500 marijuana farms have been discovered in San Diego County in the past five years and a federal official says the growers littered parks and forests with trash and banned pesticides.
City News Service says drug enforcement agents seized 1 ˝ million pot plants since 2007.
U.S. Attorney Laura Duffy says farms were found in the Cleveland National Forest, between avocado groves and even within walking distance of California State University, San Marcos.
Agents also found makeshift kitchens, sleeping areas and bathrooms and containers from banned pesticides that were smuggled from Mexico. Duffy says those poisons could contaminate water supplies.
The five-month marijuana growing season ends in October.
California is popular with pot farmers. Authorities seized 734,000 plants throughout the state in a sweep that began last month.
Copyright 2012 The Associated Press.