The 79 hectare business park, owned by Oxford Properties won the regional award for best business park in the Thames & Chilterns in Bloom Awards and a gold award in the commercial landscape category of Reading in Bloom.
Quality & Service, which trades as Q&S, is responsible for the landscaping and grounds maintenance in the park. It has a team of 10 plus a landscape manager.
Managing director Sue Payne, said: "We are extremely proud of our landscaping team based at Green Park, who have worked tirelessly, alongside property managers Broadgate Estates, over the last 18 months on enhancing the quality of the landscaping on site and this award has made all the hard work worthwhile.
"The landscaping is a key component in the overall experience for everyone who works or visits Green Park, and we are delighted to be part of the evolution of the park at this exciting time."
Other clients include the D&D London hotel network, formerly Conran,