DESIGN All three of the young designers competing for the coveted RHS Young Designer of the Year Award at this year's RHS Flower Show Tatton Park (19-23 July) have included an air of wildness in their gardens. “I find wilder gardens that imitate nature more tranquil,” says Camellia Hayes, whose garden, Seeking Resilience, creates an enveloping, nurturing space in which native wildflowers, such as wild carrot, teasels and knapweed, mix with ornamental grasses to create a sense of nature reclaiming a small pocket park. Native wild plants also feature in Ollie Pike's garden for the Bible Society, which takes its inspiration from the wildflower meadows that are often found in churchyards across the UK; while Nathan Webster's woodland-style garden, Off the Grid, makes use of green, textured plants, such as…