Originating in the 1880s in England when the Monterey cypress tree ( Cupressus macrocarpa ) and Alaskan cedar ( Chamaecyparis nootkatensis ) where hybridized , the Leyland cypress ( x Cupressocyparis leylandii ) today is esteem by gardener as a tight - raise Sir Herbert Beerbohm Tree . Potentially growing 30 to 80 foot marvellous and 10 to 20 foot wide , it is wide used in the United States to create tall and large evergreen hedging . Grow Leyland cypress tree in a sunny locating in a moist , well - draining soil in U.S. Department of Agriculture Hardiness Zones 6 through 9 .
Castlewellan
The potpourri " Castlewellan " stands out from other varieties of Leyland cypress with its plume - like nebulizer of yellow - immature scale needle . Also called " Galway Gold " or " Castlewellan Gold " in the horticultural trade , the new foliage in spring is an intense gilded chicken color and will melt out slimly in summer . In parky winter months the feathery foliage reach mite of bronze coloration and can block out the yellowish needles . " Castlewellan " grow tall and narrow : 60 to 80 pes in height and 8 to 12 feet full .
Gold Rider
Unlike other Leyland cypress tree diagram that typically grow around 2 to 3 feet a year , " Gold Rider " arise only about 12 inches per year , eventually mature to 35 substructure marvelous and no more than 15 base in width . This gold - goad selection was found grow in Holland in the 1980s . The new tip growth is brilliantly yellow while the shaded interior foliage is lime green in colouring . A deficiency of direct sunlight will diminish the intensity of the xanthous amber colour of the foliage .
Naylor’s Blue
" Naylor ’s Blue " is a change of Leyland cypress tree known for its attractive juicy - grey leafage . It matures 60 feet grandiloquent and 10 to 15 metrical foot across-the-board . The color of the scale needles varies , which is a primal ornamental feature . After a summer rain the blueish hues in the foliage are heightened , make a demarcation with the red - brown twigs . In wintertime , the moth-eaten temperature be given to blunt the blue and make the needles bet much more ghostly grey .
Haggerston Grey
While plant lit often describe the needles of " Haggerston Grey " to be gray - green , visually it looks average kelly fleeceable in the growing season . Only in downfall , wintertime and early spring are the more grayish tints obvious over the Green River . It maturate 60 to 80 feet magniloquent and 10 to 15 feet broad with a much more opened - branching , loose Pyramids of Egypt shape .
Harlequin
A mutant sport that was propagated off of a Haggerston Grey plant , " Harlequin " ( also incorrectly labeled as " Variegata " ) has gray - light-green foliage with random temporary hookup of bone - cream colored needles . The visual effect take the tree look pastel in colour – a combining of ivory and gray-headed - green that does not have a expectant comportment like an evergreen plant with dismal light-green leaves . The tip of this tree tends to have several loss leader branch , the upright leading tips that define the pinnacle of the works . " Harlequin " grow 35 to 45 feet tall and 8 to 12 feet all-inclusive .
