He was founder of Duncan's Garden Centre at Milngavie, Glasgow. He started with a retail nursery on difficult sloping site and later developed a high-class floristry business. He built what is believed to be the first customer-designed garden centre shop.
Duncan was a stalwart supporter of trade associations especially the HTA and Garden Centre Association (GCA), of which he was a founder member.
He is survived by his wife Margaret and daughter Ann.
Coolings Nurseries' Mike Cooling said: "Andrew was a man of great integrity who will be remembered by all early GCA members."