Started in 2023, the goal is to plant or designate 250 Liberty Trees — at least one in each state — for the 250th anniversary of the signing of the Declaration of Independence on July 4, 2026. There ...

Natural selection is acting upon thousands of locations within the ash tree DNA, driving the evolution of resistance as the ...

Research suggests new generation of young ash trees showing greater resistance to ash dieback fungus than adult trees.

A native, century-old elm tree near the Christie Pits neighbourhood – and one of the largest in Toronto – was recently cut down.

Eric Davies showing a small elm tree growing at the foot of the dead, enormous elm tree that is coming down. (CTV News) “Knock on wood, the seeds are viable, the cuttings are viable,” he said.

One of the largest old elm trees in Toronto — possibly in all of southern Ontario — is on its last legs. But as the city finalizes plans to take down the Barton Avenue landmark next week, a ...

One of the largest old elm trees in Toronto — possibly in all of southern Ontario — is on its last legs.But as the city finalizes plans to take down the Barton Avenue landmark next week, a University ...

When you look across the grounds at Mitchell Pool in Great Falls, the trees are the prominent feature. It’s a wonder scene as some of the old buildings blend in ...

There is an abundance of elm tree seeds around this year. Andy Fitzsimmons of City Tree Service tells you what you need to know.

These 5 tree species are dying. Scientists are racing to save them. Invasives have largely wiped out the American chestnut and elm, caused “hell” with the beech, and are now wreaking havoc on ...

Pests are ravaging keystone species like ash, elm, and beech. But researchers are breeding the survivors into more resilient populations.