The investigation leading to the raid began at least seven months earlier, when Robert Harte and his son went to a gardening store to purchase supplies to grow hydroponic tomatoes for a school project. A state trooper had been positioned in the store parking lot to collect the license plate numbers of customers, compile them into a spreadsheet, then send the spreadsheets to local sheriff’s departments for further investigation. Yes, merely shopping at agardening store could make you the target of a criminal drug investigation.