In late spring, catalpas produce white flowers that, form a distance, resemble oversized popcorn. There are two types. The northern catalpa is hardy in Zones 4 to 8, and the southern catalpa in Zones ...

You might not have the largest yard or plot, but that doesn’t mean you can’t grow the mighty spruce. These 5 types of spruce ...

Through a 20-year experiment, investigators have shown how different trees adjust their strategies for acquiring nutrients through their roots as soil warms with climate change. The research is ...

An assessment from the International Union for Conservation of Nature paints a grim picture of the extinction risk of the world's trees ...

The world’s trees are in critical danger, with a staggering number of tree species teetering on the brink of extinction, according to a new global analysis released Monday. The decade-long ...

More than one in three species of trees are at risk of extinction worldwide, threatening life as we know it on Earth, according to a report published Monday. The warning came in the Global Tree ...