It is easily identified by its gummy twigs and leaves. Learn more about the black alder tree and how it was introduced to Indiana with now current warning signs of being an invasive species. If you ...

The most common North American tree is considered to be the red alder. It has oval-shaped leaves and reddish-brown bark. It can grow as tall as 100 feet and is found mainly in the western U.S. and ...

Woolly aphids are present somewhat throughout the summer, but I always find them the most in fall and always on alder trees. Now as the leaves dry and drop off, these white colonies become even ...