A gardening expert's has revealed his top tip to keep your plants alive ahead of the blistering dry weekend - a £4 product available from most garden centres.<br /><br />Shaun Schroeder, 60, plants around 140 hanging baskets and fence planters each year in his garden in Whitchurch, Bristol.<br /><br />He adds that making sure plants get enough water in hot climes can become a "full-time job" and costly.<br />
