This is for 10x fresh viable seeds! These are probably one of my favourite uk hardy exotics!!Gunnera manicata is one of the biggest and most spectacular architectural, herbaceous plants, commonly known as ‘giant rhubarb‘. It needs a lot of space and looks best grown as a specimen plant in a bog garden or at the pond edge, where the reflections from the water reveal the prickly undersides of its leaves. upto 2.5m