Dutch elm disease is on the rise, with forestry crews set to remove seven infected trees in Regina that recently tested ...

A few weeks ago a reader suggested I write about beech leaf disease, but I said it wasn’t that big a deal. Then I went for a ...

Using a pruner, cut a 3- to 4-inch-long piece of stem and let it dry for a day or two to form a callus. Then plant it in a pot with succulent potting mix. Water it sparingly until roots develop.

“I love this tree,” they said. “It had a full canopy of leaves providing shade and shelter for birds and humans, and this year, as you can see, there are no leaves on 95 per cent of it.” ...

Each of those species is at risk of disappearing as Dutch elm disease, hemlock wooly adelgid, emerald ash borer, and beech leaf disease spread. If left unchecked, pests and pathogens will consume much ...

An apple may not fall far from the tree, but for a leaf, it depends on its shape. Elm or apple leaves — oval and symmetrical, with few protruding lobes — fall quickly, making them likely to ...

Prospect Park Alliance arborist Malcolm Gore counted the rings on a tree stump at the top of a hill in Prospect Park. "I got to 90,” he said. Counting tree rings for age isn’t entirely ...

Today, 87.5% of Colombia’s coffee production consists of resistant varieties pioneered by the institute. However, as pests and diseases — most notably coffee leaf rust and the coffee berry borer — ...

In Kings Park, only stumps remain of borer-infested century-old trees, some of which would have been worth “more than $500,000 each”, says the CSIRO’s Bruce Webber. “…In a city, no ...

Coffee rust is a parasitic fungi, Hemileia vastatrix, that latches onto leaves and reduces the crop’s ability to conduct photosynthesis. Image courtesy of Noel Rojo.