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Rhododendron calendulaceum
Flame azalea
Where can you find this plant? In Ohio: Only in unglaciated southeastern parts on rock outcrops. At HF&G: Holden Arboretum, Wildflower Garden, Rhododendron and Discovery Gardens. Bloom time: May-June, usually... more
Impatiens capensis
Common jewelweed
Where can you find this plant? In Ohio: Throughout, floodplain forests, disturbed wetlands, moist woodland edges. At HF&G: Cleveland Botanical Garden, Woodland Garden; Holden Arboretum, Wildflower Garden, Rhododendron Garden. Growing... more
Castanea dentata
American chestnut
Where can you find this plant? In Ohio: Stump sprouts persist in places, but no large mature trees known due to chestnut blight. At HF&G: Holden Arboretum, by Corning Visitor... more
May 26, 2022
Electronic Herbaria Data Applications, a Prelude to Study Eastern Redcedar Encroachment in the US Great Plains and Midwest
By Hector Ortiz , Postdoctoral Researcher
Talking about herbarium data is like entering a time machine that transports me back to a small room where I spent hours searching through plant specimens that were collected 100... more
May 20, 2022
A Helping Hand from the Community
By Nicholas Chilson, Gardener
With an upcoming project and a desperate need for cardboard we reached out to local businesses, and they delivered.Mulch can be a great tool for controlling weeds in the garden,... more
May 20, 2022
The Spring Ephemerals in Stebbins Gulch
By Sarah R. Carrino-Kyker, Postdoctoral Research Associate
For Mother’s Day this year, my 9-year-old daughter filled out a survey about me. One of the questions was “Why is your mom special?” She answered, “Because she knows almost... more
May 17, 2022
Blue false indigo & Clouded Sulphur
Blue false indigo (Baptisia australis) is a flowering plant in the pea family (Fabaceae). This plant grows upright and makes an excellent border plant for your pollinator garden. It’s deep blue... more
May 17, 2022
Prairie ironweed & American Lady
Prairie ironweed (Vernonia fasciculata) is a staple meadow plant, growing tall and blooming in late summer and fall. It is self-seeding as seeds fall to the ground at the end of... more
May 17, 2022
Dog violet & Orange Fritillary
Dog violet (Viola labradorica) is a low-growing perennial that blooms with vibrant purple flowers in the spring. If it weren’t for these showy flowers, many would likely walk right by this... more
May 17, 2022
Yellow false indigo & Wild Duskywing
Yellow false indigo (Baptisia sphaerocarpa) is a beautiful addition to any flower garden. During the summer, yellow, upright flowers bloom and attract a variety of insects – the “good kind” of... more
May 17, 2022
Sweetbay Magnolia & Eastern Tiger Swallowtail
Sweetbay magnolia (Magnolia virginiana) is an elegant, small magnolia. It’s creamy white flowers bloom in late spring here in Northern Ohio and put on a show that delights your senses of... more
May 17, 2022
Shumard oak & Banded Hairstreak
Shumard oak (Quercus shumardii) is a large tree that grows well in both urban and natural settings. Like most oaks, Shumard oak has deeply lobed, characteristic “oak” leaves and produces acorns... more
May 17, 2022
New England aster & Pearl Crescent
New England aster (Symphyotrichum novae-angliae) is a large, summer-blooming perennial. It’s characteristic aster flowerheads sport vibrant purple petals, with bright yellow flower centers. You’ll often see bees and butterflies of all... more
May 11, 2022
Euphorbias in flower
By Bernadette Gallagher, B.S. Wildlife Biology, ISA Certified Arborist, Gardner
Flowers are certainly not the first thing you may think of when you walk into our Madagascar Spiny Desert Biome. The first and most striking things you see are all... more
May 6, 2022
How to Clone a Tree
By Rachel Kappler, Great Lakes Basin Forest Health Collaborative (GLB FHC) Coordinator
Holden researchers use a technique called grafting to bring trees from the forest back to the lab for study. By Rachel Kappler & Anna Funk How do you study a... more
April 25, 2022
It’s the Tree’s Knees
By Lorinda Laughlin, Gardener
If you’ve recently visited the Arboretum, you may have noticed what appears, at first glance, to be a flash-mob of squirrels convening around Blueberry Pond. Thanks to some winter rejuvenation... more
April 21, 2022
New Research Collaboration Aims to Save Eastern Hemlocks
By Rachel Kappler, Great Lakes Basin Forest Health Collaborative (GLB FHC) Coordinator
By Rachel Kappler, Great Lakes Basin Forest Health Collaborative (GLB FHC) Coordinator Holden research launched a new initiative this year to help conserve eastern hemlocks. The Great Lakes Basin Forest... more
April 19, 2022
Holden Forests & Gardens’ Climate Change Statement
Holden Forests & Gardens (HF&G) has adopted a climate change statement recognizing that climate change is real and providing facts and information about climate change, its implications, and some ways... more
April 19, 2022
Holden Forests & Gardens Makes Commitment to Mitigate Detrimental Effects of Climate Change
Leading up to Earth Day 2022, Holden Forests & Gardens (HF&G) has adopted a climate change statement recognizing that climate change is real and providing facts and information about climate... more
April 15, 2022
When an Ecologist is a Lab Rat
By Sarah Kyker, PhD, Postdoctoral Research Associate
by: Sarah Kyker What does the soil ecology lab at Holden have in common with a crime lab? More than you might think! In the soil ecology lab, we rely... more
April 12, 2022
Arbor Day of Giving
Make a donation in honor of Holden Forests & Gardens’ 6th Annual Arbor Day of Giving. Join us as we celebrate this milestone anniversary and help us reach our $85,000... more
Pseudotsuga menziesii
Douglas-fir
The Rocky Mountain variety of Douglas-fir, Pseudotsuga menziesii var. glauca is more commonly planted in the Eastern United States than the coastal variety from the temperate rain forest of the... more
Acer saccharum
Sugar maple
Renowned for its autumn color, sugar maples are perhaps the most magnificent shade trees in northeastern Ohio. Sugar maple interbreeds with black maple which shares much of its native range.... more
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