China is offering to help the U.S. investigate the unsolicited seed packets sent to Americans through the mail.

China’s foreign ministry says their postal service has

contacted the U.S. postal service asking it to return the seeds to China,

calling the packets “faked mail.” It says information labels on the packages

appeared to be forged.

The USDA and agriculture departments in more than two dozen

states are warning recipients not to plant the seeds which could be invasive,

noxious species of plants that could compromise crops and the environment.

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