You should inspect your private trees at least once a year to determine their health. During your inspection, keep a log of the following tree characteristics for comparison from year to year:
- leaf size
- stem decay (any broken limbs or a split trunk)
- crown dieback
- shoot extension
If 2 or more characteristics are doing poorly in a given year, it usually indicates something has affected your tree's health. For example, if you have both stem decay and crown dieback, it usually indicates a problem which began several years ago and is now becoming apparent.
Once you realize there’s a problem, look for probable causes and try to correct them. If you are having trouble identifying the cause, take a sample from the plant to your local nursery or gardening center. Samples of diseased, pest infected, or damaged plants should be large enough (approximately 30 to 60 cm long) to represent the problem. The sample should show early to mid stages of the disease rather than be completely dead. Do not bring samples from elm trees as this violates provincial Dutch elm disease regulations.
The City of Regina's Pest Management staff routinely monitor and survey the condition of all American and Siberian elm trees throughout the city to limit the spread of Dutch elm disease. Staff also checks elms on City or private property for disease and pest infestation when requested by the public.
The City will also inspect other trees with suspected disease or pest infestations as time allows on a lower-priority basis. Inspection requests must include contact information; tree location; and the description of problem. Before City crews arrive, tie a ribbon around the tree to be inspected on your property. After the inspection, the City will provide either a verbal or written assessment of the problem along with a recommendation to address the condition.