Help Stop the Spread

Those ugly black lumps in your maydays and choke cherry trees could be a fungal disease called Black Knot. Winter is the best time to see and prune it. Branches pruned are best destroyed by burning.

The Alberta Government website has great information about how to identify and control this disease. If you suspect a tree on your property has black knot fungus, local companies can be contacted for help with identification and pruning.

This perennial introduced from Europe as an ornamental, reproduces both by seed and creeping rhizomes. Roots can travel under fences, through lawns and even under sidewalks and concrete. To learn more, please click here.

The emerald ash borer is a highly destructive insect that targets ash trees. Learn more by clicking here.

Dutch Elm Disease affects multiple species of elm in Europe and North America and is spread by bark beetles that attack elm trees. For more information, please click here.

To learn more about the Dutch Elm Purning Ban, please click here.

Oxeye Daisy can be considered conspicuous, as there are no native white-flowered daisies in Alberta. Oxeye daisy is a perennial that spreads primarily by seed, but also by shallow, creeping roots (rhizomes). Learn more by clicking here.

Scentless Chamomile can behave as an annual, biennial, or sometimes a perennial, but reproduces by seed only. Plants are usually very bushy and have a fibrous root system. Learn more by clicking here.

Flowers are numerous, fragrant and arranged in clusters. It is a short-lived perennial (sometimes biennial) native to Europe. Learn more by clicking here.