bark beetle tunnels as organic texture - dutch elm disease stock pictures, royalty-free photos & images
elm trees effected by dutch elm disease (ded) - dutch elm disease stock pictures, royalty-free photos & images
dead elm ulmus procera due to dutch elm disease berkshire - dutch elm disease stock pictures, royalty-free photos & images
skeletonized leaves with dutch elm disease - dutch elm disease stock pictures, royalty-free photos & images
the tree trunk of a dead english elm tree, ulmus procera, that has been killed by dutch elm disease in woodland in the uk. - dutch elm disease stock pictures, royalty-free photos & images
in vitro elm trees being grown on a sterile research chamber - dutch elm disease stock pictures, royalty-free photos & images
scientist checking growth of elm trees grown in vitro - dutch elm disease stock pictures, royalty-free photos & images
workers planting elm trees on a research hotbed - dutch elm disease stock pictures, royalty-free photos & images
Elm trees in Richmond Park that have unfortunately succumbed to the Dutch Elm Disease are marked with a white cross for felling.
elm trees effected by dutch elm disease (ded) - dutch elm disease stock pictures, royalty-free photos & images
Tree surgeon watches as a branch falls from a horse chestnut tree as he prepares it to be felled after it was identified as being infected with...
Tree surgeon watches as a branch falls from a horse chestnut tree as he prepares it to be felled after it was identified as being infected with...
Visitors walk along the avenue that has all the horse chestnut trees felled after they were identified as being infected with bleeding canker, at the...
Tree surgeon cuts branches from a horse chestnut tree as he prepares it to be felled after it was identified as being infected with bleeding canker,...
Tree surgeon climbs a horse chestnut tree as he prepares it to be felled after it was identified as being infected with bleeding canker, at the...
Tree surgeon on the ground cuts branches from a horse chestnut tree about to be felled after it was identified as being infected with bleeding...
Tree surgeon cuts branches from a horse chestnut tree as he prepares it to be felled after it was identified as being infected with bleeding canker,...
Tree surgeon on the ground cuts branches from a horse chestnut tree about to be felled after it was identified as being infected with bleeding...
Tree surgeon cuts branches from a horse chestnut tree as he prepares it to be felled after it was identified as being infected with bleeding canker,...
Tree surgeon cuts branches from a horse chestnut tree as he prepares it to be felled after it was identified as being infected with bleeding canker,...
Tree surgeon cuts branches from a horse chestnut tree as he prepares it to be felled after it was identified as being infected with bleeding canker,...
Tree surgeon climbs a horse chestnut tree as he prepares it to be felled after it was identified as being infected with bleeding canker, at the...
Tree surgeon on the ground cuts branches from a horse chestnut tree about to be felled after it was identified as being infected with bleeding...
Tree surgeon climbs a horse chestnut tree as he prepares it to be felled after it was identified as being infected with bleeding canker, at the...
Tree lays on the ground after being recently felled after it was identified as being infected with bleeding canker, at the National Trust's...
Tree surgeon cuts branches from a horse chestnut tree as he prepares it to be felled after it was identified as being infected with bleeding canker,...
Tree surgeon climbs a horse chestnut tree as he prepares it to be felled after it was identified as being infected with bleeding canker, at the...
Building Lost Its Trees Friday, Victims Of Dutch Elm Disease Denver has more than 200,000 elms which experts say are doomed by the disease. Credit:...
Corona St. Elm Tree being taken down because of Dutch Elm disease Dave Paricio lead Foreman Credit: The Denver Post
Branch Of Diseased American Elm And Healthy Samples Dutch elm disease killed about 55,000 trees in 1969 year epidemic began. Credit: Denver Post
Corona St. Elm Tree being Taken down because of Dutch disease Dave Paricio lead foreman. Credit: The Denver Post
Trees Surveyed In Brighton's Fight Against Dutch Elm Disease Doing early work for the all-out community effort are, from left, Glenn Huntington,...
Early morning sunlight cut through the truck of an elm tree at 2048 Elliot St.The 50 foot tall tree, planted around the turn of the century is nearly...
First Ave "Dutch Elm Disease" Here we have a shot of Dave Cummings foreman, for swingle tree Co. Trimming down the big branches so tree can be cut...
Diseased Elms Come Down At Capitol A workman cuts into an elm tree at the Colorado State Capitol, one of 20 elm trees that are being cut down on the...
First Ave "Dutch Elm Disease Making A Comeback Region Losing lots of Trees Again. Elm Beign cut down by Swingle. Here we have a shot of Ken...
Dutch Elm Disease Denver Forester Ray Howe points out the track of an elm bark on a piece of wood from a dead elm tree. Credit: The Denver Post
Search for symptom of Dutch Elm disease in Jefferson County is the purpose of a resurvey being conducted by the Colorado State Forest Service. The...
Trees Leave a Pall on Denver's Horizon This view northward from the intersection of the Valley Highway and E. Hampden Ave. Shows the towering cloud...
Denver Forester Ray Howe stands next to a tree that has been killed by Dutch Elm Disease. He used the hammer to pull away the bark to show us some...
Maple, Fir And Ash Trees Are Spinning Up In Park Hill To Replace Dying Dutch Elms Park Hill, with a heavy concentration of elms, faces bigger loss...
Automobiles Don't Spare The Trees Many Trees on Lincoln St. Have fallen victims to the automobile, but most of them were potential victims of Dutch...
Biologist John Tomalin applying to an infected tree at Glaston, near Uppingham, a treatment which claims to be a breakthrough in the fight against...