Embodiments of an apparatus and methods can removing unwanted plants or weeds from an area such as an agricultural plot or lawn. The apparatus includes a three-dimensional imager configured to capture plant images and locate plants an image processor configured to distinguish between wanted and unwanted plants based upon the captured plant images at least one laser device configured to emit a laser beam having power sufficient to damage the unwanted plants a guidance system configured to direct at least one laser beam toward the unwanted plant and a chassis configured to support the three-dimensional imager, the laser device, and the guidance system. The chassis is configured to be moved across the area.
