In a statement, the company said: "Over the past few weeks Charles and the family have derived enormous pleasure and comfort from the many cards, letters and measures of support from so many of his friends and colleagues.
"The family will be holding a private burial followed by a memorial service at a later date.Thank you for your support at this sad time."
Charles Notcutt joined the family firm of Notcutts of Woodbridge, Suffolk, in 1958, becoming managing director 1964 – 1999 and chairman 1974 – 2006. At the end of July 2008 he completed 50 years with Notcutts. He then retired from their board and became non-executive president.
Notcutt had a long connection with the HTA, having been a member of its council 1959 – 1971. He was the first chairman of the HTA Garden Centre Group in 1966 – 1968. This subsequently became the Garden Centre Association. He was involved in the formation of the joint HTA/NFU Nursery Stock Committee, of which he was a member 1974 – 1987, and chairman 1976 – 1980.
He was on the governing bodies of the Glasshouse Crops Research Institute, East Malling Research Station and John Innes Research Institute and a governor of Otley College, Suffolk, 1993 – 2005 and Writtle College, Essex, 1998 – 2008, which made him a Fellow of Writtle in 2009.
He was vice chairman of Perennial, formerly the Gardeners Royal Benevolent Society, a member of the Council of the Royal Horticultural Society 1989 – 1999, receiving their Victoria Medal of Honour in Notcutts' centenary year of 1997, and chaired their audit committee 1999 – 2004.
He was a member of the steering group for the formation of the Institute of Horticulture in 1984, its first treasurer and president 1988 – 1989.
He received an OBE for services to the horticultural industry in 1993.
HTA chief executive officer Carol Paris said: "I am deeply saddened to hear about the death of Charles Notcutt. A true plantsman, Charles has done so much for the industry throughout his career. A lovely chap who will be sorely missed by many."