DetailsGriselinias are fast growing evergreen shrubs and trees from New Zealand, perfect for coastal planting. This plant is upright growing, and can form a narrow hedge which can be trimmed to 6-8ft and a width of only 60cm/2ft, so it won’t take up a large part of your garden. Hedges can grow up to 60cm per year. Average planting distance in 40-80cm apart depending on your preference. The closer they are planted the faster they will form a hedge.