With severe cold hitting much of the country, some unusual phenomena like "exploding trees" could be on the way. Here's what ...

Winter isn’t the ideal season for pruning trees in Upstate New York, but it’s the best time to cut scion or twigs from ash trees in parts of the state where the species has been all but wiped out.

To save an endangered tree, put it up for sale. And whatever you do, don’t tell anyone where it is. That’s how an Australian consortium is protecting the Wollemi pine tree, a rare species that dates ...