The Leyland cypress ( × Cupressocyparis leylandii ) is a popular eccentric of cypress tree within the cypress family ( Cupressaceae ) . It is a intercrossed species create by cut through the Monterey cypress tree ( Cupressus macrocarpa ) and the Alaskan cedar ( Chamaecyparis nootkatensis ) . The Sir Herbert Beerbohm Tree was first cultivated in the mid-20th century and has since become wide institute for its rapid growth and attractive appearing . It is much used in gardening , primarily for hedges and screens .
The genus is named after Christopher Leyland , on whose property in England two North American species of conifer , Monterey cypress ( Hesperocyparis macrocarpa ) and Nootka cypress ( Callitropsis nootkatensis ) , unintentionally fussy - pollinated around 1888 .
The Leyland cypress is tight - growing in nature . In the early year , it can grow up to 3 understructure per year , and it has been known to touch 50 feet in height in 15 years .
Characteristics
Planting And Growing Conditions
Uses of Leyland Cypress
Common Diseases And Pests
Pests
Seiridium Canker ( Cypress Canker )
Seiridium canker sore is a fungal disease that affects Leyland cypress , stimulate branch dieback , resinous lesions , and ultimately leading to the death of septic subdivision . The leafage may wrick brown , and cankers often exude rosin .
Pruning infected branches and boost good air circulation can help finagle the disease . Fungicides may be used preventively , and it ’s all important to keep off focus factors that de-escalate the tree diagram , making it more susceptible to infection .
Bagworms ( Thyridopteryx ephemeraeformis )
Bagworms are caterpillars that construct protective bags from plant material and silk . They feed on Leyland cypress tree foliage , causing brown patches and defoliation . In serious cases , heavy plague can go to significant damage .
Handpicking udder from the tree diagram and destroying them is an good control method . Insecticides , applied at the right clock time in the bagworm lifecycle , can also help manage infestations .
Spider Mites
wanderer mites are tiny arachnoid that feed on the bottom of Leyland cypress needles . plague can lead to stippling , discoloration , and o.k. net on the foliage . Heavy infestation can cause significant stress to the tree , resulting in bronzing or browning of the needles and overall diminution in health . Frequent washing of the foliage with a warm stream of body of water helps reduce mite population . Insecticidal soaps or horticultural oils can be used ,
Leyland Cypress Aphid ( Cinara cupressi )
Leyland cypress tree aphids are little , soft - bodied insects that feed on the blackjack of Leyland cypress needle . They can be encounter clustered on the needles . Aphids get phonograph needle distortion , yellow , and stunt development . The honeydew they excrete can attract jet clay sculpture .
Insecticidal soaps or neem oil are effective chemic control options . Pruning and removing heavily infested branches can also be part of an integrated blighter direction scheme .
Diseases
Seiridium canker is because of the fungus Seiridium unicorne . The disease typically manifests as resin - hit it up lesion on the branches . Infected branches may expose dieback , turning browned and finally leading to the last of portions of the tree . The cankers may be visible as dark streaks on the unnatural branches .
Root Rot ( Phytophthora spp . )
Various mintage of the genus Phytophthora can cause root waste in Leyland cypress tree . Root rot affects the root system , leading to symptoms such as wilt , yellow of foliation , and general decline . In advanced stages , the barque near the alkali may exhibit canker , and the tree may eventually tumble .
Botryosphaeria Canker
Several species of fungi in the Botryosphaeria genus can have pestilence in Leyland cypress . Botryosphaeria cankers typically appear as recessed , color lesions on limb . The unnatural branches may know dieback , and canker may ooze rosin . tension broker , such as drought or injuries , can increase susceptibleness .
Needle Blight ( Seridium spp . and Cercospora spp . )
Needle blights in Leyland cypress can be triggered by various fungi , include coinage of Seridium and Cercospora . Needle plague result in the Elizabeth Barrett Browning and dieback of needles . Infected needles may display discoloration , distinguish , or lesions . stern infection can lead to defoliation and overall tree decline .
