The case of unsolicited “mystery” seed showing up in people’s mailboxes from Chinese shippers has reached 22 states and several foreign countries. USDA’s Animal and Plant Health Inspection Service (APHIS) has identified 14 different species of seed from mustard and morning glory to cabbage and roses. APHIS says there is no indication the seeds carry pests or diseases and they have no evidence the packages are anything more than a brushing scam where “brushers” place orders for vendors products who then pose as the buyers to post fake customer reviews to boost sales.