It has a spreading, generally upright branching, vase-shaped habit. The oldest fossils attributed to Zelkova date from the early Eocene (55 million years ago) in western North America, where the genus is extinct today. 137 South Duke Street, Lancaster PA . Japanese zelkova tree has often been promoted as a substitute for the American elm (Ulmus americana), now largely eliminated as a landscape tree because of its susceptibility to Dutch elm disease.While the Japanese zelkova doesn't have quite the charm of the American elm, it is an attractive tree and well worth planting. This species is widely grown as a bonsai specimen, prized for its flaking bark and attractive arching crown. Andrews, S. (1994). The Zelkova is an extremely resistant tree in its cultivation for bonsai and can be both indoors and outdoors. Find species-specific information on your tree. It is also important to have a scarless trunk and a perfect nebari. Use a standard soil mix. Zelkova (from Georgian ძელქვა dzelkva, 'stone pillar') is a genus of six species of deciduous trees in the elm family Ulmaceae, native to southern Europe, and southwest and eastern Asia. This tree, native to Japan, Korea, and China, is probably the oldest Zelkova in Lancaster County. Japanese Zelkova is an extremely hardy tree and prefers full sun but will tolerate any conditions. [23] The retrieval of ancient patterns may be specific to tree species, which are assumed to evolve more slowly than herbaceous plants and shrubs. Young twigs often grow crooked and messy and must be corrected for a perfect broomstyle winter silhouette. General information: Zelkova is often listed as a replacement for American Elm since it has roughly the same vase shape and grows 90 to 100 feet tall with a 60 to 80 foot spread.Zelkova is massive, with the trunk capable of growing to four feet or more in diameter. They are dark green throughout the summer, changing to yellow, orange, red and purple in autumn. An excellent shade tree reaching 12 – 15 m in height with a spreading crown to 10m when mature. Caucasian elm; Japanese elm; keaki, keyaki, kiaki; Derived terms . Growing on a rock. It aimed to assess the diversity within and among species using DNA from two cellular compartments that have different modes of inheritance and trace different histories. Zelkova or Japanese Elm as it is better known is a deciduous tree with a lovely upright habit. zelkova (plural zelkovas) A kind of tree in the elm family (genus Zelkova). Zelkova serrata Figure 1. But keep in mind that the precondition for defoliation is always a strong and healthy tree.Â. Mature Japanese Zelkova. The Zelkova is in fact quite similar to the Ulmus (the Chinese There are two varieties, Zelkova serrata var. ], one in southwestern Asia [Zelkova carpinifolia (Pall.) It has a significant tolerance against Dutch Elm disease and many types of insects, and is also known to be tolerant to pesky deer. Schneid. Propagation: The zelkova can be propagated from seed and cuttings. Quotations . The winter silhouette and fine ramification of the Japanese greybark elm are extremely important and its nicest feature. 1). Japanese Zelkova is a tough urban tree for residential shade and street plantings. Zelkova is a see also of elm. A more comprehensive phylogeographical analysis,[28] based on trnH–psbA, trnL and internal transcribed spacer regions 1 and 2 (ITS1 and ITS2), was the first to use a wide sampling of natural populations from nearly all the disjunct regions where Z. abelicea, Z. carpinifolia and Z. sicula presently grow. The fruit is a dry, nut-like drupe with a dorsal keel, produced singly in the leaf axils. Compact. Kov. Japanese Zelkova1 Edward F. Gilman and Dennis G. Watson2 INTRODUCTION Zelkova is often listed as a replacement for American Elm since it has roughly the same vase shape and grows 90 to 100 feet tall with a 60 to 80-foot spread (Fig. It is noted for its graceful shape, clean foliage, attractive bark and resistance to Dutch elm disease. It is often grown as an ornamental tree, and used in bonsai. JAPANESE ELM Being a rapid and very vigorous grower makes it possible to have quick results with Zelkova. The Zelkova … A native of Japan, Taiwan and eastern China, Japanese zelkova wins gardeners’ hearts with its graceful shape, dense foliage and attractive bark. The leaves are simple and ovate to oblong-ovate with serrated margins, rough on top and glabrous on the underside. (Ulmus are listed seperately under their own species guide). ; and Zelkova sinica C. K. The Japanese elm is a deciduous tree which is native to Japan, Korea and Taiwan. Zelkova is closely related to elms, but it is resistant to Dutch elm disease. They vary in size from shrubs (Z. sicula) to large trees up to 35 m (115 ft) tall (Z. carpinifolia). Zelkovas are usually planted in shallow oval or rectangular pots. Zelkova serrata 'Kiwi Sunset' - of asian origin - is often grown as an ornamental specimen tree or shrub of weeping habit even though it can reach a height of 6m. Overwatering can cause root rot. The Japanese zelkova, is a deciduous tree that typically grows to a height of around 30m. [5][6] Species of Zelkova were important elements of the vast forests that prevailed throughout the Northern Hemisphere during much of the Cenozoic Period. Tree of the year: Zelkova. Zelkova is polygamous. Use a fertilizer with a balanced N-P-K ratio. [7][8][9], Today, the genus comprises six species with disjunct distribution patterns:[10] three in eastern Asia [Zelkova serrata (Thunb.) A few phylogenetic and biogeographical studies have been carried out on Zelkova,[26][8][10][27] but these studies had small sample sizes or weak representation of wild populations. Good shade tree for lawn or park. [29] The wood is hard, used for making furniture. The Zelkova serrata plant is a beautiful medium-to-large deciduous tree native to Eastern Asia. Description: Hardy, deciduous, wide-spreading tree but vase-shaped when young. Zelkova (from Georgian ძელქვა dzelkva, 'stone pillar') is a genus of six species of deciduous trees in the elm family Ulmaceae, native to southern Europe, and southwest and eastern Asia. Leaves borne on inverted pins; Veins parallel, each ending in a tooth [16][15][13], The Sicilian Zelkova Z. sicula, only discovered in 1991, is listed as an endangered species. Zelkova (Japanese Elm) Care guide for the Zelkova Bonsai tree. In winter the greybark elm should be protected from frost, especially when it is planted in a shallow bonsai container. Also used in bonsai, it's a hardy, attractive, small tree with lime green, serrated foliage that turns yellow in Autumn before falling. https://en.wikipedia.org/w/index.php?title=Zelkova&oldid=992488869, CS1 maint: DOI inactive as of September 2020, Articles containing Georgian-language text, Creative Commons Attribution-ShareAlike License, This page was last edited on 5 December 2020, at 15:05. Zelkova: More questions than answers. Greenwood cuttings can be taken in summer, hardwood cuttings in winter. Common Name: Elm - Japanese. Quick ID. The perianth and stigma are persistent. With a reasonably fast growth habit it has become a … Repot every two or three years, at the end of winter, abundantly pruning the roots. As a curiosity, the Zelkova parvifolia or Japanese elm is known by the name of “Kejaki”. Narrow heart-shaped leaves, fine pointed with slender-tipped teeth. Drought tolerant and fairly tolerant of urban sites once established. Zelkova serrata. There are two varieties: Zelkova Serrata var. Position: The Japanese greybark elm likes a place in full sun during the growing season or, if the sunlight is very intense in your country, semi-shade during the hottest weeks.In winter the greybark elm should be protected from frost, especially when it is planted in a shallow bonsai container. After the leaves have fallen, carefully prune thick twigs and overly long shoots. The downside is that the elm can overgrow very quickly and so it needs regular pruning and… This content is for Basic, Plus, Premium, and Free members only. Staminate flowers are clustered in the lower leaf axils of young branchlets; the perianth is campanulate, with four to six (to seven) lobes, and the stamens are short. It can reach a height of 30 meters (100ft) and develops the characteristic broomstyle shape with a straight trunk fanning out into many branches and twigs. A cold but frost-free greenhouse, garage or shed is a good winter place for the zelkova. 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