This genus is comprised of 45 deciduous, rarely semi-evergreen trees and very rarely shrubs. \u00a0Most elms are large limbed trees forming a domed crown with furrowed or fissured gray bark. \u00a0There found natural occurring in woodland, thickets, and hedgerows in the northern hemisphere and Siberia to Indonesia, Mexico to Japan. \u00a0They have alternate, ovate to elliptic, egg shaped or rounded leaves with prominent, parallel lateral veins and may be single or double toothed margins and with unequally sized bases. The leaves usually color to yellow in autumn. \u00a0Cluster of tiny, bell shaped flowers, each with 4-9 segments joined at the bases, are usually produced from auxiliary buds in spring, but sometimes from leafy buds in autumn, they are quickly followed by green to brown, rounded to elliptic, membranous wing seed capsules. \u00a0Cultivated for their habit and foliage, elms\u2019 are mainly grown as specimen trees. \u00a0Ulmus x hollandica \u2018Jacqueline Hillier\u2019 is suitable for shrub border and for hedging.<\/p>\n
In areas free of Dutch elm disease grow in any well-drained soil in full sun or partial shade. \u00a0Zelkovas are good substitutes where Dutch elm is prevalent.<\/p>\n
Prone to Dutch elm disease<\/i><\/em>\u00a0caused by the fungus Ophiostoma Ulmi <\/i><\/em>spread by bark beetles and natural grafts, has destroyed hundred of thousands of American elms. \u00a0There has been recent breeding between European and Asiatic species that are slowly showing more resistant to the disease. They are also prone to Borers, Beetles, Caterpillars, mealy bugs, scale insects, leaf hoopers, mushroom root rot, dieback, canker, Verticillium wilt, wood rot, lepidopteran larvae, hepialid moth, phloem necrosis<\/i><\/em>, and elm yellows<\/i><\/em>.<\/p>\n U. Americana ‘Pioneer’ \u2013 American Elm ‘Pioneer’ \u2013 White Elm \u00a0– Water Elm <\/b><\/strong>\u2013 This fast growing elm it can reach up to 120 feet and a 100 feet wide. \u00a0This globular crown shape deciduous tree bears ash gray bark that is deeply fissured and reach 4\u2019 feet in diameter and the branch tips tend to be pendulous. \u00a0It produces alternate ovate to elliptic, double toothed dark green leaves 4-6\u201d long, and have a smooth upper surface with a slightly downy underside. \u00a0The leaves turn bright yellow in autumn. \u00a0Tiny, hermaphrodite, purple brown petalless flowers are borne in early spring followed by samara winged green fruit, \u00bd\u201d across<\/p>\n Is resistant phloem necrosis and somewhat to Dutch elm disease<\/p>\n Zones 3-9<\/p>\n","protected":false},"excerpt":{"rendered":" Ulmus \u2013 Elm This genus is comprised of 45 deciduous, rarely semi-evergreen trees and very rarely shrubs. \u00a0Most elms are large limbed trees forming a domed crown with furrowed or fissured gray bark. \u00a0There found natural occurring in woodland, thickets, and hedgerows in the northern hemisphere and Siberia to Indonesia, Mexico to Japan. \u00a0They have […]<\/p>\n","protected":false},"featured_media":0,"comment_status":"open","ping_status":"open","template":"","meta":[],"product_cat":[52,21,41,28,16,20,29],"product_tag":[],"common-name":[],"toolset-meta":{"plant-product-fields":{"is-featured-product":{"type":"checkbox","raw":""},"zone":{"type":"checkboxes","raw":"","checked":[],"formatted":""},"scientific-name":{"type":"textfield","raw":""}},"toolset-woocommerce-fields":{"_download_limit":{"type":"numeric","raw":"-1"},"_virtual":{"type":"checkbox","raw":"no"},"_downloadable":{"type":"checkbox","raw":"no"},"_download_expiry":{"type":"numeric","raw":"-1"},"_download_type":{"type":"radio","raw":""},"_regular_price":{"type":"numeric","raw":""},"_sale_price":{"type":"numeric","raw":""},"_sale_price_dates_from":{"type":"date","raw":"","formatted":null},"_sale_price_dates_to":{"type":"date","raw":"","formatted":null},"_sku":{"type":"textfield","raw":"PDE-160251320"},"_manage_stock":{"type":"checkbox","raw":"no"},"_stock_status":{"type":"radio","raw":"instock"},"_stock":{"type":"numeric","raw":null},"_backorders":{"type":"radio","raw":"no"},"_sold_individually":{"type":"checkbox","raw":"no"},"_width":{"type":"numeric","raw":""},"_weight":{"type":"numeric","raw":""},"_length":{"type":"numeric","raw":""},"_purchase_note":{"type":"textarea","raw":""}}},"_links":{"self":[{"href":"https:\/\/directory.plantdistributors.com\/plant-distributors-new-york\/wp-json\/wp\/v2\/product\/2929"}],"collection":[{"href":"https:\/\/directory.plantdistributors.com\/plant-distributors-new-york\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/directory.plantdistributors.com\/plant-distributors-new-york\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/directory.plantdistributors.com\/plant-distributors-new-york\/wp-json\/wp\/v2\/comments?post=2929"}],"wp:attachment":[{"href":"https:\/\/directory.plantdistributors.com\/plant-distributors-new-york\/wp-json\/wp\/v2\/media?parent=2929"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/directory.plantdistributors.com\/plant-distributors-new-york\/wp-json\/wp\/v2\/product_cat?post=2929"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/directory.plantdistributors.com\/plant-distributors-new-york\/wp-json\/wp\/v2\/product_tag?post=2929"},{"taxonomy":"common-name","embeddable":true,"href":"https:\/\/directory.plantdistributors.com\/plant-distributors-new-york\/wp-json\/wp\/v2\/common-name?post=2929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}