Roundup now secures six of the eight bestselling weed killer packs in the UK, with the top three being Roundup 1L Ready to Use, Roundup Gel and Roundup 5L Pump N Go.
Roundup Lawn and Garden UK business director Gary Philpotts said: "As the team at Roundup suggested, it appears that Roundup Gel is attracting gardeners who have never purchased a weed killer to enter the market. This is great news for garden centres in this tough season.
"The success of Roundup Gel and the incredible demand from gardeners following the TV advertising caught us by surprise and we literally could not make the product fast enough. We had to stop advertising Roundup Gel and switch to Roundup Pump N Go after only three weeks of TV.
"The recent combination of wet weather but mild temperatures mean weeds will be growing faster, so sales are expected to boost as soon as the sun comes out and people finally get into their gardens.
"The figures strongly demonstrate that consumers are choosing Roundup over the competition, so retailers should take advantage of Roundup’s popularity and make sure that these products are given prominent space in store so customers can find what they are looking for".