Norris & Gardiner will continue to trade independently under the direction of managing director Richard Gardiner and his team but Gavin Jones’ operations manager Simon Jacob and managing director Will Clark will become co-directors.
Norris & Gardiner will continue to focus its efforts on local authority clients.
Gardiner said: "As time went on it became more and more apparent that the future of Norris & Gardiner would be best placed as part of the Gavin Jones organisation – avoiding duplication of fees for a variety of services and memberships and thus reducing overheads.
"Effectively this solution provides "business as usual" but with cost-saving benefits for clients and greater career development opportunities for staff – a true win-win situation for everyone."
Clark said the move was good for both businesses.
"The synergies between our organisations were simply too over-whelming to resist and the acquisition of the well-respected Norris & Gardiner brand has brought with it an increasing capability to offer the broad range of integrated horticultural services for which Gavin Jones has become renowned," he said.
Gavin Jones won the "best of the best" Grand Award at the BALI National Landscape Awards last December for a residential scheme which judges described as "a masterpiece".