Boston-Converted Organics Inc. has announced the closing of its acquisition of 95 percent of the membership interests in TerraSphere Systems LLC, a rapidly growing pioneer in the vertical farming market. Converted Organics entered into an agreement to acquire TerraSphere Systems on July 6, and the acquisition was approved by shareholders on Sept. 6. The acquisition is the company’s largest to date, and is described as one that fits in well with its environmentally friendly objectives since the vertical farm allows locally grown, fresh, pesticide-free produce to be cultivated closer to large numbers of users in population centers.