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Holden Arboretum See what’s happening and on the horizon

The Holden Arboretum encompasses an expansive 3,500 acres including lush woodlands and 200 acres dedicated to thoughtfully cultivated gardens. Plan Your Visit

Visit
Cleveland Botanical Garden See what’s happening and on the horizon

Cleveland Botanical Garden features outdoor and indoor gardens with native, rare and exotic collections, plus specially curated specimens planted in themed glasshouses. Plan Your Visit

Adventure awaits!
Adventure awaits! Murch Canopy Walk at Holden Arboretum Opening April 1st: Test your adventurous side while walking 65 feet above the forest floor. Learn More
Return of the Butterflies!
Return of the Butterflies! Cleveland Botanical Garden Experience hundreds of newly-emerged tropical butterflies, each more unique and colorful than the next. Learn More

It takes a village to help the forest.

We are experts in research, conservation, and community forestry, and strive to make an impact in Northeast Ohio—and beyond.

Projects
Great Lakes, Great Trees

Great Lakes, Great Trees

The new Great Lakes Basin Forest Health Collaborative is leading the charge to save ash, beech and hemlock trees. Their base is at the Holden Arboretum. Wandering the Holden Arboretum, it’s all too easy to take in the trees, stroll the boardwalk and stop to smell the flowers without ever knowing the impact the Holden… »

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

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

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 produce an exceptionally large number of seeds. The phenomenon is called masting, and, lucky for Holden forestry researchers working with ash trees, this year is… »

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People for Trees™

People for Trees™

Holden Forests & Gardens is entering year three of our People for Trees campaign. Already, more than 10,000 trees have been given away, pledged, and planted by residents of Northeast Ohio. That’s amazing. But we still need more People for Trees to pledge and plant. Share your love of nature and invite a friend, neighbor… »

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Science on Friday: The Challenges of Rhododendron Research

Science on Friday: The Challenges of Rhododendron Research

March 24, 2023

Rhododendrons are loved by many gardeners for their bright, kaleidoscopic spring flowers. They are special for many reasons, including rhododendron being one of the most species-rich genus of woody flowering plants comprised of over 1,000 species. Their diversity makes them highly suitable for use in scientific studies. One research project that the Medeiros Lab has… »

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Working Woods

Working Woods

Most of Ohio’s forest is privately owned. Private landowners face a variety of challenges when it comes to land stewardship including succession planning, pests, disease, poor logging practices, pressure from logging companies, and invasive plants. Good forestry addresses these challenges by working with nature so both people AND the woods can thrive.  Learn more about… »

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Learn more about our research and community forestry efforts.

From the Blog
It’s Poppin’: March 31st

March 31, 2023

It’s Poppin’: March 31st

Our long steady march to spring flowers is continuing!  Fortunately, this is the first week in a while where we didn’t see any significant snow.  Plenty of rain and warmer temperatures have brought several new plants into bloom at both campuses.

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Mapping Plants at Northeast Ohio’s Rhododendron Paradise

March 31, 2023

Mapping Plants at Northeast Ohio’s Rhododendron Paradise

Ever wonder what it takes to map an entire collections of plants? Our data and mapping intern, Phil Sturm walks you through the ins and out of GPS mapping going on at the Leach Research Station in Madison, Ohio.

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Behind the Scenes with Cleveland Botanical Garden’s Butterflies

March 27, 2023

Behind the Scenes with Cleveland Botanical Garden’s Butterflies

Have you ever wondered where Cleveland Botanical Garden’s biome butterflies come from, how they get here, and what goes into getting them flying in the glasshouse? Let’s walk through each step in this process and learn all about it!

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Science on Friday: The Challenges of Rhododendron Research

March 24, 2023

Science on Friday: The Challenges of Rhododendron Research

Rhododendrons are loved by many gardeners for their bright, kaleidoscopic spring flowers. They are special for many reasons, including rhododendron being one of the most species-rich genus of woody flowering plants comprised of over 1,000 species.

Read more
It’s Poppin’: March 23rd

March 23, 2023

It’s Poppin’: March 23rd

Welcome to spring! Looking back, record warmth brought many early bloomers to the surface in mid-February. Flowers like winter aconites, snow drops and crocuses have had a wonderfully long season thanks to cold temperatures returning for most of March.

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The Benefits of a Healthy Forest

March 21, 2023

The Benefits of a Healthy Forest

Happy International Day of Forests! A day of awareness started by the United Nations General Assembly in 2013, ten years of efforts to bring the importance of forests to the forefront of our minds. Here is a collection of photos from NE Ohio that my husband and I have taken on our outdoor walks with some facts about forests.

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We’re proud to work with these distinguished organizations.

American Alliance of Museums
U.S. Forest Service
American Public Gardens Association
Cuyahoga Arts & Culture

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