The UK’s biggest watering, spraying and aquatics company pulled out of the Glee garden centre suppliers show, which Expo is in competition with, after 2008's event.
Garden Expo will be Hozelock's main UK show in 2010. Expo is due to announce three more "big name" sponsors next week.
Clarion Events Garden Expo organiser Sarah Porter said: "This sends out a massive message to the industry. People were concerned about Garden Expo going ahead but now we have 50 exhibitors signed up and our first big name headline sponsor. Hozelock will be using Garden Expo as their UK platform in 2010."
Hozelock, which will also exhibit at Gafa in Cologne, Germany on 5-7 September 2010, will "link with us on making sure the event represents the needs of suppliers building content for the show," Porter added.
Hozelock will help on content for a series of six-weekly VIP round table discussions at venues such as London's Oxo Tower in the six months ahead of the event. The round tables will tackle issues to do with garden care, outdoor living, landscaping and horticulture.
Porter said it was important for suppliers to discuss content ahead of the event rather than afterwards. Hozelock representative Simon McArdle was not available for comment.
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