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About Green Horizon

Green Horizon Landscaping, Inc. has been shaping landscape dreams in the Conejo Valley since 1987. We take pride in providing for every detail “From Creation to Completion”.

Owner and President, Glenn Thompson, was raised on a family owned nursery in Simi Valley. He launched his own gardening and maintenance company in 1984. Quickly developing an aptitude for seeing a yard and having the vision for it’s transformation, he moved into the “creation” part of the business in 1987.