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Suitable for U.S. Department of Agriculture plant hardiness zones 6 through 9, Leyland cypress is a naturally fast grower, growing 20 to 30 feet tall in the first 10 years, and eventually reaching over 50 feet tall and 20 feet wide.
We recommmend planting Leylandii, Laurel and other evergreen shrubs* between 60cm and 100cm apart (approximately 2-3 feet apart). Hedges with plants 60cm apart fill in quicker than those planted 100cm apart but you get just as good a hedge in the long run at either distance apart.t depends on the growing conditions and how far apart you plant them. Under ideal conditions, leylandii should create a good screen after two years growth when planting 120cm+ plants at 60cm apart and it will take about three years at 100cm apart.