For more than 130 years, Armstrong Garden Centers has been serving clients in Pasadena. Home and business owners can hire the company's landscapers to design an all-new lawn. They put in new trees, shrubs, and flowerbeds, along with hardscapes like decorative rocks, pavers, fences, retaining walls, and stepping stones. The firm also offers various plants and garden supplies, including fertilizer, mulch, soil, and tools. Founder John Armstrong started the business by growing and selling trees.