Landscaping Keller TX. So, if you’re looking for a landscaping company that you can trust, then Keller Landscaping might just be the company you are looking for. We are an insured and certified company that provides homeowners the best experience. We’ve made a commitment to all our clients that if we’re hired to provide our services we will not only give them the best landscaping deals but also assure them of a 100% satisfaction guarantee.