The Emerald Isle Leyland Cypress Tree (Cupressocyparis leylandii 'Moncal') is a neat, uniform evergreen tree that needs no trimming when used in natural form. A strong, narrow pyramidal growth with soft, bright green foliage on flat sprays. An excellent tall screen or windbreak when mass planted. No trimming necessary despite being a fast growing evergreen, gaining up to 2-4' per year. 

Prefers full sun, plant in deep, well-drained, average to enriched soils. 
Height: 20-25'
Width: 6-8'
Spacing: 8-10'
Zones: 5-9

What you are planting is 1 Emerald Isle Leyland Cypress Tree, at a size of your choosing. Handle with care.