You’ve seen them. Big, lumpy green balls scattered across the ground like nature’s odd little brain sculptures. If you’ve ever wondered what kind of alien fruit those are — surprise! You’ve met the ...

Each spring, a horse chestnut tree on the University of Colorado’s Boulder campus puts on a floral display that stops people, even some of the multitasking undergraduates, in their tracks. The tree is ...

One of the two stately horse-chestnut trees, which have been landmarks on Canyon Road for nearly a century and a half, appears to be dead. Both trees began showing signs of stress, such as rust on ...

I do not see many horse chestnuts in home landscapes and your tree is a beautiful specimen. It appears that your tree is suffering from a common fungal disease called horse chestnut leaf blotch.