He thanked the editors of the magazines he writes columns for, including Horticulture Week for allowing him to "express his views" to the industry and also Amateur Gardening, whose editor Tim Rumball is retiring to be replaced by Garry Coward-Williams.
He also thanked current Sun colleagues Steve and Val Bradley and garden centre owner Roger Dungey.
Seabrook said his four and a half years travelling as a peat sales representative under Mike Oliver early in his career were so valuable that he recommended everyone should spend time on the road selling.
Seabrook is behind the HTA and garden industry 40 Sunbury Road Chelsea Flower Show garden for this May, which will include 100 growers and suppliers.
According to the HTA, 40 Sunbury Road - "a typical but modest suburban back garden" - will have living walls, a patio, decking, hanging baskets, containers, wildlife area, shed and greenhouse.
The containers and hanging baskets will include bedding and container plants grown by HTA members - garden centres, growers and seed trade.
There will be an area grown by schools that will include vegetables and wildlife-friendly plants. Westland Horticulture’s ‘Rising Stars’ will once again contribute the containers or baskets.
Trees and shrubs and other structural elements will come from HTA and APL members and garden product supplier members.
The first joint industry Chelsea garden in 2016 featured 80 suppliers for Seabrook's 80th birthday.
Rising Stars North
Rising Stars South