In the first list, Wyevale owner Sir Tom Hunter was number one in the top 50. Now he does not feature at all on the list, which has doubled in size. Garden Centre Group chief executive Nicholas Marshall has replaced Hunter, with Dobbies boss James Barnes number two.
In third place is Defra's new minister, who had not been appointed at the time of going to press but has now been confirmed as Conservative Caroline Spelman.
The list reveals a trend towards television garden product sales, demonstrated by the rise of Lead the Good Life managing director Peter McDermott, whose company is now owned by Ideal Shopping Direct. Also featured are QVC presenter Richard Jackson and QVC supplier Paul Hansord.
Industry experts contributed to the compilation of the list. Peter Seabrook said two strands emerged - those influencing at point of sale such as B&Q's chief executive officer and those influencing through the media such as Toby Buckland.