Roundup Gel, which was launched onto the market at Glee 2011, won best new product, best consumer product packaging and best marketing communication.
Latest GfK figures rank the gel as the UK's second-biggest-selling weedkiller pack. It sold 212,886 units to the end of May, 5.9 per cent of the market. Top was Roundup one-litre ready to use, with 398,506 sales, 11 per cent of the market.
At the awards, Hillview's Boyd Douglas-Davies announced that Garden Re-Leaf Day would run again on 8 March 2013 after raising more than £50,000 for Greenfingers in this year's inaugural event.
Other GIMA award winners included Hozelock's sevenlitre Pro sprayer, Wolf Li-ion Power HTA 700 hedge trimmer, Smart Solar Aruba bistro set, Suttons Seeds Beginners Seed Collection, Robimatic Ecobust, Bosmere Products salt spreader, Supa More Birds wild bird feeders, Haddonstone and Solus.
See full details of GIMA Awards winners.