We recommend planting Leylandii, Laurel and most 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.

If you want to form a very tall hedge (5m or taller) or are planting our extra bushy laurel (180cm+ sizes) then plant at 100cm apart
*Except for Box and Yew.