From 1 November, the administration of the association passes to the Federation of Garden & Leisure Manufacturers, whose headquarters are in Brasted, Kent.
CHA chairman Pat Flynn said: "The expertise of the federation in helping British firms develop their overseas sales is well known and their wide portfolio of business support services, which include intellectual property protection, news releases and event organisation, will bring an added dimension to both our UK and international activities.
"I would like to assure our membership that there will be no loss of identity as a consequence of this move. The CHA will remain an independent trade association with a management committee elected by its members and that committee will continue to provide the horticultural expertise that Chris and Peter have so proficiently applied to the benefit of the association".
Stuart Booker, who manages much of the day-to-day business of the CHA is to stay in office. He will continue to operate from Stoneleigh Park and be the first point of contact for members.
The Federation of Garden and Leisure Manufacturers will be inviting all CHA members to a designated open day at the new secretariat's office.
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