For our current class schedule, visit our Summer Home Landscapes page.
Admission is free with non-member class registration |
| Learn more about Holden Instructors |
Build a Rain Barrel: |
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| Date | Wednesday, April 7 | |
| Time | 7-8pm | |
| Location | Corning Classroom | |
| Instructor | Beth Landers, Lake Soil and Water Conservation District |
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| Cost | $55members, $65 nonmembers | |
| Description | Join us for a Rain Barrel building workshop. Rain Barrels are containers used to collect and store rainwater that otherwise is lost to runoff or storm drains. Collected water can then be used to water plants, lawns and gardens and to wash cars. At this workshop we provide the re purposed 55 gallon food barrel and everything else needed to build an attractive, hassle and mosquito free rain barrel ready to hook up to a downspout.
The Holden Arboretum and Lake County Soil and Water Conservation District are teaming up to provide workshops for those who want to know more about rain barrels and rain gardens. Learn more about how you can help the environment through your home landscape. |
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| Class Code | HOR490 | |
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Plant Taxonomy Made Easy - *ISA CEU |
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| Date | Saturday, April 17 | |
| Time | 9 - 11am | |
| Location | Corning Classroom | |
| Instructors | Clem Hamilton, President and CEO The Holden Arboretum | |
| Cost | Free, but registration required | |
| Description | Sound like an expert when talking about plants. Holden's president and chief executive plant geek, will keep you from tripping over the Latin names of plants and clear up any confusion you may have about descriptive plant terms. By the end of the class you will be confidently using and pronouncing Latin scientific names as well as describing plants' leaves, flowers, fruit and other morphological characters.
People enrolled in the Holden Tree Treks program will find this course invaluable. Please bring a hand lens
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| Class Code | HOR260 |
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| *ISA members can earn CEUs for participation. | ||
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Holden Tree Treks - *ISA CEU |
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| Sessions are held twice per month, beginning in May and run through the first Saturday in October. | ||
| Take however many sessions you would like and enter the program at any time. | ||
| Date | Session 1: Saturday May 8, Session 2: Saturday, May 22 | |
| Time | 9-11am | |
| Location | Corning Visitor Center | |
| Instructors | Clem Hamilton, Charles Tubesing, Ethan Johnson | |
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| Description | Tree Treks is for anyone who loves trees and is interested in learning about the principal native and introduced landscape trees found in our area. In each session a different set of 12 trees is highlighted on a 2-hour walk. Distinguishing characteristics for identifying each species are discussed, along with site adaptations and other horticultural characteristics. Tree Treks is taught by Holden Arboretum president and CEO Clem Hamilton, along with Charles Tubesing, chief horticulturist; and Ethan Johnson, plant records curator. Two instructors lead each session. ISA members can earn CEUs for participation. Sessions are held twice per month, beginning in May and run through the first Saturday in October. All sessions take place in the field so dress for the weather of the day. We encourage repeat participation for people who took the course last year as we will be covering many trees we did not cover last year. Please bring a hand lens and water and wear good walking shoes and a hat. Clipboards for note taking and summary sheets are provided. We strongly encourage taking the free two-hour Plant Taxonomy course as a prerequisite. | |
| Class Code | HOR270 |
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| *ISA members can earn CEUs for participation. | ||
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Wednesday Lantern Court Garden Tours |
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| Date | Wednesdays April - May | |
| Time | 2-3 pm | |
| Location | Lantern Court | |
| Instructor | Tom Yates, Horticulturist | |
| Cost | Free for members and non-members | |
| Description | Tour the diversity of garden displays and styles on this peaceful afternoon tour through the enchanting grounds of Lantern Court. Pick up ideas for attractive plant combinations to incorporate into your home landscape. Meet at the Lantern Court Parking Lot. No need to pre-register. |
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Weekend Lantern Court Garden Tours |
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| Date | Saturday, April 24 and Sunday, May 23 |
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| Time | 1:30 - 2:30 pm | |
| Location | Corning Visitor Center | |
| Instructor | Holden Guides | |
| Cost | $3 members, $8 nonmembers (includes admission to Holden) | |
| Description | Tour the exquisite gardens of Lantern Court. Delight in the formal English borders, naturalized plantings along the wooded ravines, rock gardens and perennial beds. Pick up ideas for attractive plant combinations to incorporate into your home landscape. Meet at the Corning Visitor Center. |
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| Class Code | HIK114 | |
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Perennial Propagation 101 |
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| Date | Saturday, April 24 | |
| Time | 10am - 12noon | |
| Location | Lantern Court | |
| Instructors | Tom Yates | |
| Cost | $15 members, $20 nonmembers | |
| Description | Successfully propagate garden perennials as you learn the basics of seed sowing, cuttings and division. Each participant will take home a sampling of propagated plants. Dress for hands-on participation in and out of the garden. | |
| Class Code | HOR497 |
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Plant Sale Plant Tours |
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| All tours are free and led by Holden's own professional staff. Registration is encouraged. Meet at the Corning Visitor Center. | ||
| Wildflower Garden Tour | ||
| Date | Saturday, May 15 | |
| Time | 1:00 - 1:50 pm | |
| Location | Corning Visitor Center | |
| Instructor | Brian Parsons | |
| Description | Let Holden's wildflower expert show you how to grow wildflowers and discover which wildflowers are best suited for various landscape conditions. | |
| Class Code | HOR550 |
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| Add Some Culture to your Landscape | ||
| Date | Saturday, May 15 | |
| Time | 2:00-2:50 pm | |
| Location | Corning Visitor Center | |
| Instructor | Rick Hederstrom | |
| Description | Many plants are more than just "pretty faces". Some have interesting stories to tell. Learn about some of the plants that make good additions to your garden and have interesting cultural backgrounds and stories to tell. When you use these plants in your landscape you will have lots to talk about with your family and friends. |
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| Class Code | HOR550B |
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| Ornamental Interest Tour
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| Date | Saturday, May 15 | |
| Time | 3:00 - 3:50 pm | |
| Location | Corning Visitor Center | |
| Instructor | Charles Tubesing | |
| Description | A walk through Holden’s Display Garden with horticulturist Charles Tubesing, focusing on plants that are flowering or provide other ornamental spring interest. | |
| Class Code | HOR550C |
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| Wildflower Garden Tour | ||
| Date | Sunday, May 16 | |
| Time | 1:00 - 1:50 pm | |
| Location | Corning Visitor Center | |
| Instructor | Tom Yates | |
| Description | Let Holden's wildflower expert show you how to grow wildflowers and discover which wildflowers are best suited for various landscape conditions. | |
| Class Code | HOR550D |
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| Tough Plants for Tough Sites | ||
| Date | Sunday, May 16 | |
| Time | 2:00 - 2:50 pm | |
| Location | Corning Visitor Center | |
| Instructor | Toby Davidson | |
| Description | Tour the display garden to learn about a variety of plants that will thrive in areas where you have been unable to grow anything else. From dry shade to heavy wet clay, we will find the right plant for you. | |
| Class Code | HOR550E |
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| Shrubs for Color Appeal | ||
| Date | Sunday, May 16 | |
| Time | 3:00 - 3:50 pm | |
| Location | Corning Visitor Center | |
| Instructor | Marian Williams | |
| Description | Walk through the nearby gardens and learn about some of the best shrubs to grow for seasonal interest color. | |
| Class Code | HOR550F |
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Rhododendron Tours at the David G. Leach Research Station |
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| Date | Sundays May 9 and 16 and Saturday, May 15 | |
| Time | 9am -4pm | |
| Location | At Site | |
| Instructor | Staff and Volunteer Guides | |
| Cost | Free, but registration required | |
| Description | Take this infrequent opportunity to visit one of our horticultural gems, the David G. Leach Research Station in Madison, Lake County. Meander among thousands of blooming rhododendrons in a woodland garden, and check out the new rhododendron hybrids that are being bred and selected for future introduction. Research staff and guides will be on hand to lead tours, starting every hour on the hour. Last tour begins at 3pm. Directions will be sent upon registration. | |
| Class Code | HOR501 |
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Small Ornamental Trees for the Landscape |
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| Date | Wednesday, May 26 | |
| Time | 7:00 - 8:30pm | |
| Location | Corning Visitor Center | |
| Instructor | Toby Davidson | |
| Cost | $5 members, $10 nonmembers | |
| Description | This class will concentrate on small trees that are a bit out of the ordinary such as the Franklinia tree that blooms in the fall as its foliage turns an orange-red. We will walk through the gardens of Holden to view and discuss a diversity of trees that will spice up your landscape. We will also learn about the cultural requirements of these easy to manage trees and how best to use them as focal points in the home landscape. | |
| Class Code | HOR527 |
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