Gunnera manicata is king of the gardening world thanks to its giant evergreen leaves that can reach 1452 metres across33 this variety will look seriously impressive in any garden although it may not be suitable for smaller gardens due to its sheer sizefondly known as giant rhubarb gunnera plants are ideal for waterlogged spots as their reflection in the water is spectacular this holder of an rhs agm is durable architectural and sure to be an attention45grabbing addition to your ga