The Garden Industry Manufacturers Association (GIMA) is running the scheme, based on the RHS plant of the century due to be announced at the Chelsea Flower Show next month.
GIMA director Neil Gow said he expects national consumer press interest. GIMA members will nominate products. Seabrook suggested systemic insecticides, polythene, rigid plastic, electric-powered hand tools, slow-release fertilisers, resin furniture and garden centres.
Gow suggested peat-based composts and multiple-action lawn feeds. "The RHS is supportive," he added, and said he is looking for the products that "revolutionised gardening". The winners will be announced at GIMA's awards on 18 July.