June 21, 2024

Continuing our Work on Beech Leaf Disease

By Sarah Kyker, PhD, Postdoctoral Research Associate

Trees

by: David Burke and Sarah Kyker If you live in northeastern Ohio, you probably have heard of beech leaf disease (BLD), which was first spotted in Lake County in 2012.... more

June 7, 2024

Seeking to Understand Disease Resistance in Crabapples

By Maris Hollowell, Emily Lewis, Na Wei

Trees

Unseasonably warm spring weather threw a curveball at researchers at the Holden Arboretum, who study the flowering time, pollinators, and microbiomes of crabapple trees. The crabapple plot at the arboretum... more

May 22, 2024

Beech Leaf Disease Research Update: The Impact on Microbial Communities

By Anna Funk, PhD, Science Communications Specialist

Trees

FOR IMMEDIATE RELEASE (KIRTLAND) May 21, 2024 – Beech leaf disease is an emerging threat to American beech trees in the Great Lakes Region and northeastern U.S. Caused by a non-native,... more

March 13, 2024

Monitoring Hemlock Woolly Adelgid Colonization

By Danny Dlugos, PhD, Senior Research Specialist - Plant Breeding

Trees

Eastern hemlock (Tsuga canadensis) is one of the most recognized trees in Northeast Ohio. Native to the eastern United States and Canada, it ranges from Nova Scotia south along the... more

January 25, 2024

Garlic Mustard and Its Newly Introduced Aphid

Plants

Garlic mustard is an herb covering forest floors across North America. However, it wasn’t always found here. Garlic mustard is an invasive species brought to the United States from Europe... more

January 9, 2024

Protecting Eastern Hemlocks from Tiny Tree-Killing Invaders

By Albert Jackson, Conservation Seasonal

Trees

The Holden Conservation Department is on the hunt for tiny tree-killing pests. During the early and mid-20th centuries, two non-native tree dwelling insects were unintentionally introduced to the eastern United... more

April 28, 2023

Snowballing Effects of Beech Leaf Disease Hurt Helpful Root Fungi

Soils

FOR IMMEDIATE RELEASE Severe beech leaf disease infestation hurts trees’ relationships with helpful root mutualists, ectomycorrhizal fungi. The American beech, Fagus grandifolia, is a North American staple and the dominant... more

April 25, 2023

Signs of Beech Leaf Disease found in one of Holden’s Most Popular Trees

By Sandi Cesarov, Horticulturist

Trees

Beech trees are known for their smooth gray bark and the deep shade they provide.  The American Beech is an important part of our local native beech/maple forest, which is... more

October 21, 2022

Ash Trees Are Exploding with Seeds; Researchers Are Capitalizing on It

Trees

It’s a mast year for ash trees. Holden researchers are launching a new initiative to collect ash seeds from around the region. When conditions are just right, certain trees will... more

August 26, 2022

Can I save my beech tree? And other beech care questions, answered

By David J. Burke, PhD, Vice President for Science and Conservation

Trees

You asked, and Holden Forest & Garden’s beech tree expert, David Burke, answered. By David Burke & Anna Funk If you live anywhere near northeastern Ohio, you may have noticed... more

August 26, 2022

Why you should trim your beech trees in September

By David J. Burke, PhD, Vice President for Science and Conservation

Trees

By: David Burke & Anna Funk Beech trees looking a little rough? Ours, too. Beech leaf disease is prevalent in our area. You’ll know it by the green stripes (called... more

August 12, 2022

Bird Banding & Beech Leaf Disease

By Mike Watson, Conservation Biologist

Wildlife

Beech Leaf Disease (BLD) was first documented in 2012 in Lake County, Ohio and has now been found in 17 of Ohio’s counties, 10 states, and in Canada. BLD can... more

October 1, 2021

Beech Leaf Disease and Forest Fungi: Healthy trees support healthy fungal communities

By Claudia Bashian-Victoroff, MS, Research Specialist

Soils

Arboreta play an active role in studying a wide range of tree diseases and the pathogens and parasites that cause them. Holden is no exception. Work from our arboretum and... more