Tertill Corporation is a consumer products company based in the greater Boston area. Founded by Roomba inventor Joe Jones and veteran roboticist Rory MacKean, Tertill Corporation is headed by Helen Greiner, co-founder of iRobot. Tertill Corporation's flagship product, Tertill, is the world's first robot designed to autonomously weed home gardens. Tertill is weatherproof and solar-powered so it is able to stay in the garden all season long. The new Tertill Garden Program provides the know how to grow a WOW raised bed vegetable garden. The annual plan includes a free soil test, customized care plan featuring Tertill Organics fertilizers delivered to your door, a smartphone app that organizes your garden info, and personalized support for all your gardening questions. Tertill doesn't just kill weeds, it actually prevents them from growing. Tertill's specially-designed wheel churn the surface of the soil killing pre-emergent weeds. Any weeds that do manage to grow get chopped down with Tertill's string trimmer until they run out of energy and die. The Cornell School of Agriculture found Tertill's method of weeding as effective as hand weeding.