With most places in Ontario well below normal rainfall amounts for July, lack of water one of many potential causes.

The report adds birch and poplar trees, especially those on drier hills, will show the most colour change. Aspen and poplar trees usually show their most vibrant fall colours early to mid-October.

Bronze leaf disease symptoms usually appear in late summer or early fall, and may be visible on only a few branches or leaves. The infected leaves typically turn an orange-brown colour.

Trees don’t need a calendar to know it’s time to shed their leaves. Although temperature and rain is important, the primary trigger of the vibrant fall leaf colors is reduced sunlight. As ...

Fall foliage is an annual spectacle, with leaves changing from summer green to the oranges, yellows, browns and reds of fall. But the change to red is a hard one to explain.

You can spot a stressed tree by its leaves, which change colour before the others. (Source: Pixabay) Tree stress can affect whether the fall show will be sensational or not.

Yellow leaves, often seen as an early sign if fall, are signs of a lack of moisture, says a Calgary arborist. (Colleen Underwood/CBC) ...

Quotes "The Tree Atlas is a great tool for people who want clear, reliable information about native trees. Whether you’re out with the family and want to know what trees you’re walking past or ...