Two Tewksbury residents allegedly advertised medical marijuana on Facebook and then sold it from their home.

Mark Harrington and Holly Harrington, both 28, were arrested Tuesday. They claimed on a Facebook page to operate HTM Gardening LLC out of a Patten Road home, Tewksbury police said in a statement. Mark Harrington is listed as the president and cofounder of the company on Facebook.

On the page were photos of plants they purported to be growing and cash, police said. The Facebook page said that people simply had to “fill out the new patient application below and e-mail a copy of your certification, a photo ID, and a signed health care release form so we can call to verify your certificate is valid.”