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Listing 1 - 10 from 12 for elm

The Threat of Dutch Elm Disease
... This is the first in a series or articles addressing the issue of Dutch elm disease. American elm is one of the largest, most impressive, and most abundant landscape trees in Saskatchewan ... would be relatively harmless, like many other disease organisms. Unfortunately for the elm trees, however, North American and European elm bark beetles travel from infected trees where they deposit their eggs to ...
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Diseases of the Elm Tree (Part 2)
... living bark and sap-conducting tissue. In Manitoba, Botryodiplodia canker kills more elms than Dutch elm disease, with drought-stressed Siberian elms being most suspectable. A principal symptom of Botryodiplodia ... the islands with elms which are resistant to that disease. Eventually, the American elm will overcome Dutch elm disease in a similar manner. The only problem is that the development of ...
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Elm - Trap Trees for DED
... herbicides applied to wounds made in the trunk. This renders the elm attractive to the European and Native elm bark beetles (Scolytus multistriatus and Hylurgopinus rufipes, respectively). The bark beetles ... organic arsenicals; neither causes significant eye or skin irritation nor are they carcinogenic. The elm wood itself contains very low levels of arsenic after treatment, although the wood at ...
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Master Document Index
... Burls Cedar or Juniper? Choosing Trees and Shrubs Drought Tolerant Trees and Shrubs Dutch Elm Disease Dutch Elm Disease - Spread of Elms and Disease (Part 1) Elms and Disease (Part 2) Elms ...
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Horticulture at Saskatoon's Forestry Farm Park
... found: an enormous tamarack, mugo pines, Black Hills spruce, Ohio buckeye, a golden cedar, American elm, a columnar Swiss stone pine, bur oak, and hawthorn. By the superintendent's house are ... topiary replica of the bear represented on the Forestry Farm emblem. Spencer has used Siberian elm for all of his topiary because of its quick growth and dense habit. The Saskatchewan ...
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Eriophyid Mites
... Pests | Eriophyid Mites Russell Friesen Flower galls on ash and poplar trees, leaf galls on elm, maple, linden, basswood, birch, poplar and cherries are all caused by microscopic mites. Each species ...
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Plant Galls
... mites. These microscopic mites cause flower galls on ash and poplar trees, leaf galls on elm, maple, linden, basswood, birch, poplar and cherries. Each species of tree has it is own ...
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Sapsucker Damage
... an urban environment they seem to prefer birch, linden, blue spruce, Scots pine, and Siberian elm. Unlike woodpeckers, sapsuckers do not drill these holes in search of grubs. They are more ...
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Slime Flux and Bacterial Wetwood
... Bacterial Wetwood GardenLine | Trees and Shrubs | Slime Flux and Bacterial Wetwood Russell Friesen Poplar, elm, birch, maple, apple and mountain ash can all develop a condition known as bacterial ... of Trees and Shrubs. Cornell U.P.: 1987. Stipes, R. Jay, et al. Compendium of Elm Diseases. American Phytopathological Society: 1981. Sustainable horticultural information, offered free of charge to the ...
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Some Tree Troubles Not Caused by Insects or Diseases
... considerable damage to trees, especially when these chemicals have been misused. Manitoba maple and Siberian elm are very susceptible to this type of injury. They often develop symptoms in response to ...
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