There have now been five reported cases of Dutch Elm Disease in Regina this summer.
Each case has been found in a tree owned by the city, spread across Regina in no certain pattern.
Russell Eirich, Manager of Forestry Horticulture and Pest Control said on Tuesday, they have a crew dedicated to searching for possible infected trees.
He added there are some easy to identify first symptoms on trees that are potentially infected.
“The leaves curl up and they die on the tree, but they don’ fall off, those are some of the first symptoms. At that point a sample is taken off the tree, they peal the bark back and look for staining on the wood, and at that point it goes to a laboratory and it has to be cultured,” Eirich told reporters.
Eirich added that it takes about two weeks to learn if the tested tree has tested positive for Dutch Elm or not.
If it does, the tree will be removed and the city will then inject trees nearby to try and prevent underground spreading of the disease.
The main reason Regina sees Dutch Elm is from the elm bark beetle, Eirich said the insect carries the disease on its back.
The beetles are usually brought into the city on elm firewood, something the city wants residents to be aware of.
Since 1981 Regina has lost only 99 trees to Dutch Elm.