Seeds and bulbs is the only negative category - down 0.25 per cent this year.
Figures for the end of July indicate a sales increase in almost all areas compared with 2014 figures.
This included rises in all areas but furniture and barbecues (down by 1.4 per cent) and hard landscaping (down by 2.19 per cent) in July.
The lastest GCA figures for July showed clothing was up by 16.96 per cent, houseplants up by 13.93 per cent and outdoor plants up by 9.09 per cent.
HTA figures showed July 2015 was nine per cent up on the same month last year and year-to-date sales are nine per cent up on 2014.