Gardening can become a slimy nightmare in the warm months, when vegetables, flowers, fruit are all voraciously chomped to destruction by slugs and snails. “They like to eat the young seedlings of sown vegetables or ornamental plants, so you think, nothing will grow there then,” says Christine Scherer from the Bavarian Garden Academy. So how do you become pest free? “It’s best not to use any poison at all,” recommends Marja Rottleb from the German Nature and Biodiversity Conservation Union (NABU), but rather rely on “natural, preventative and control measures.” 1. Remove them by hand: “Every sl…