The term 'Sister Brand of Ortho' refers to the company Scotts, a 6-letter word. Scotts is an American multinational corporation that produces and sells lawn and garden care products. It is a sister brand of Ortho, another lawn and garden care company owned by the same parent company. Scotts and Ortho both offer a wide range of products, including fertilizers, weed killers, insecticides, and grass seed.