The Telegraphflipped into GardeningGardening trends 2018: tough shrubs, seaweed and nematodes could be in your futureThe Telegraph - Matthew ApplebyWhen I ask professional growers and garden centre managers about trends in the gardening world the answer is nearly always the same: depends on the weather. For 2018, they could be more right than ever. For instance, a dry winter could lead to hosepipe bans. Two dry winters in a row are often enough …