Winter can be a cruel period for trees. Day-night temperatures may wildly fluctuate and drying winds tend to injure tender buds. Maples (Acer spp.), flowering dogwoods (Cornus florida), birches (Betula spp.), yellowwoods (Cladrastis kentukea), walnuts (Juglans spp.) and elms (Ulmus spp.) are “bleeders”. The sap pressure inside branches is highest during the winter months. If any […]
Archive for the ‘Elms (Ulmus)’ Category
Winter Sap Bleeding From Trees Not Harmful
Posted by Hugh on January 28th, 2014
Posted in Birch (Betula spp.), Dogwood (Cornus), Elms (Ulmus), Maples (Acer), Pruning, Southern Appalachian Region, Trees & Shrubs, Walnut, watering tips, Yellowwood 
Comments Off on Winter Sap Bleeding From Trees Not HarmfulToo Early Fall Color A Telltale Signal Of Tree In Trouble
Posted by Hugh on October 6th, 2013
Early leaf color or premature leaf drop often tells a property owner that their tree(s) may not be healthy. Photo above, taken in front of a new subdivision, says alot. Large red maples show leaf color weeks ahead of their natural timeline. Notice the narrow median where the trees are planted. The cause of early […]
Posted in American hornbeam, Autumn foliage color, Crape myrtle (Lagerstroemia), Elms (Ulmus), Garden Problems, Hornbeam (Carpinus), Maples (Acer), Pear (Ornamental), Planting tips, Regional, Soil drainage, Sweetgum (Liquidambar), Trees & Shrubs, Yellowwood Comments Off on Too Early Fall Color A Telltale Signal Of Tree In TroubleAmerican Elm Is Back
Posted by Hugh on November 2nd, 2012
American elm (Ulmus americana) once lined America’s city streets until the deadly Dutch elm disease (DED) mostly eliminated it. DED is still present today. Outstanding disease resistant cultivars are truly making a difference, and American elm is on the comeback. American elm is native to the eastern and central regions of the U. S. and […]
Posted in acidic soil, alkaline soil, Disease resistant, Drought tolerant, Elms (Ulmus), Native Plant, Pruning, Soil drainage, Southern Appalachian Region, Spring flowering, Trees & Shrubs, Winter flowering Comments Off on American Elm Is BackEmerald Ash Borer And Others Are Spreading – Don’t Transport Firewood
Posted by Hugh on October 15th, 2012
Moving firewood across county or state lines may also distribute serious insect pests hundreds of miles. For whatever reasons that the tree(s) were cut down in your yard, insects (including termites) may be hiding inside the logs. They may remain alive for a long time. Over the past decade three serious exotic insect pests have been identified […]
Posted in Elms (Ulmus), Firewood, Green ash (Fraxinus), Insect (Pest) Problems, Invasive plant, Landscape ideas, Native Plant, Pests, Southern Appalachian Region, Trees & Shrubs, Uncategorized, Walnut Comments Off on Emerald Ash Borer And Others Are Spreading – Don’t Transport FirewoodSapsucker Feeding May Blacken Maple Trunks
Posted by Hugh on April 29th, 2012
You see or hear a sapsucker tapping in a yard tree and pay little attention to it. The bird perforates the tree or shrub trunk and main branches with numerous shallow holes, similar to a riveter working with sheet metal. A sapsucker feeds on the cambium sap and on insects under the bark. The holes are deep […]
Posted in Dogwood (Cornus), Elms (Ulmus), Maples (Acer), river birch, Sapsucker, Southern Appalachian Region, Yellowwood Comments Off on Sapsucker Feeding May Blacken Maple TrunksSummer Leaf Drop From Trees
Posted by Hugh on August 20th, 2011
It’s late summer in the Southern Appalachian region (USDA zones 6 and 7). Outdoor temperatures continue to hit 90°F almost daily, and weekly precipitation is low. Over the past 3-4 weeks leaves have been dropping prematurely from landscape trees. Tulip poplar (Liriodendron tulipifera), river birch (Betula nigra), willow (Salix spp.), sycamore (Platanus x acerifolia), […]
Posted in Birch (Betula spp.), Elms (Ulmus), Garden Problems, Hackberry (Celtis), Large Shade trees, Premature leaf drop, Redbud, Southern Appalachian Region, Summer heat tolerant, Sycamore (Platanus), Trees & Shrubs, watering tips, Willows (Salix) Comments Off on Summer Leaf Drop From TreesBeware of Storm Damaged Trees
Posted by Hugh on December 20th, 2009
This past weekend Northeast Tennessee as well as most of the coastal eastern U.S. was hit by heavy snow, 7 inches and more of heavy, wet clinging snow. Many of my neighbors lost electric power, telephone and cable. A driveby survey of tree damage around the neighborhood found that the following tree species suffered the […]
Posted in Elms (Ulmus), Maples (Acer), Pear (Ornamental), Pines (Pinus spp.), Pruning, Southern Appalachian Region, Trees & Shrubs, winter injury Comments Off on Beware of Storm Damaged Trees
