The move comes after what he descibed as three "fabulous years" at Hayloft Plants, with "tremendous growth in sales and profits".
He added: "We had some very clear goals back in 2013 in terms of structure, positioning, systems, analysis and skills. Having supported those changes, seen core strengths develop over that time, you see that your personal scope and ability to make further significant developments diminishes. The Hayloft team has within it a very clear direction and vision, and the abilities to continue to drive strong growth."
Hayloft director Derek Jarman added: ‘The removal of Low Value Consignment Relief (LVCR) from the Channel Islands in April 2012 enabled many of the Hayloft Plants plans to come to fruition under the careful direction of Martin Harvey.
"LVCR made it possible to grow plants in the UK, transport plants by ferry to the Channel Islands, pack at port, send back to the retail customer in the UK keeping the all sales VAT. This was subject to upper consignment limits which were £18 plus unspecified post & packing which was reduced to £15 plus P&P prior to the rapid removal of the scheme by the Treasury and HMRC, once they became aware that the horticultural need was no longer valid."
Yvonne Walker, Hayloft brand director, set up the company in 1993, operating from her converted barn. She was joined by Harriet Hardiman.
Hayloft offers varieties that are rare and unusual, focusing on recruiting new customers from direct response advertising, insert marketing, distributing catalogues, responsive websites and social media to its ornamental gardeners’ customer base.
Under Harvey’s tenure a Reader’s Offers department was established by James Edmonds.