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ElmUlmus speciesTrees and Shrubs, BonsaiStratify seed 2-3 months before sowing, or sow in fall; germination often poor. Also reproduced by ring-barking, from softwood cuttings in early summer, and by rooting suckers. Well-drained soil and sun. The American elm, Ulmus americana, is prone to Dutch elm disease, and should probably be avoided; it does well in dry areas. Zone 2-9 Ulmus parvifolia, or Chinese elm, a good bonsai species, if grown in containers should be brought in during winter; can be grown cool indoors. Ulmus procera, English elm, is equally suitable as bonsai, though also prone to Dutch elm disease. Zones 5-9 and 5-8 respectively. Ulmus pumila also does well in dry areas, zone 5-8 See Also Japanese elm (Zelkova serrata) Related Topics Cuttings
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