Our teachers have spent years honing their skills in Colorado and will help guide you to success. Classes fees are $25 (unless otherwise stated), and payment for classes is non-refundable.
This small fee helps to support our speakers, classroom costs, and Harlequin’s educational direction. It is best to pre-register as some classes have size limitations and others may be cancelled if they don’t meet minimal attendance as set by individual instructors. The last day to register for any of our classes is 48 hours before start date.
You can register on our website (best) or at the nursery, or by calling 303-939-9403 with payment information.
Most of our classes run from 1.5 to 2 hours in length, and sometimes longer for hands-on classes or to accommodate extra questions. Many of our classes will be held next door at the Boulder Circus Center. The Circus Center is located next door to Harlequin’s Wholesale at 4747 North 26th Street. A confirmation email will always be sent to you before the class confirming location along with any other information. For weather-dependent classes, we’ll notify participants in the event of weather cancellation/rescheduling.
Customers who have signed up as 2025 Members will receive $10 off their first class. Please consider becoming a Member: It is a great way to support Harlequin’s mission. Memberships can be purchased online or at the store.
We’re adding new classes for the 2025 growing season!
Click on class titles for more information.
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Sat, March 22 – Rocks and Gardens: A Primer for starting a Garden with Panayoti Kelaidis
$25.00 -
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Sat, Apr 5 – Succession Gardening, with Mimi Yanus
$25.00 -
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Sun, April 6, 11AM – 12:30, Organic Lawn Maintenance with Mikl Brawner
$25.00 -
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Sat, April 12 – Creating Shared Spaces in the Garden, with David Sutherland
$25.00 -
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Sat, April 19 – Trees and Shrubs for hotter, dryer conditions: Adapting to climate changes, with Scott Skogerboe
$25.00 -
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Sat, April 26 – Firewise Landscaping, with Bill Melvin
$25.00 -
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Sun, April 27 – New to Gardening in Colorado, with Mimi Yanus
$25.00 -
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Sun, Apr 27, 11AM – 12:30PM – Spring Pruning with Mikl Brawner
$25.00 -
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Sun, May 18, 1 – 2:30PM – Non-Toxic Pest Management, with Mikl Brawner
$25.00 -
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Sun, June 1, 1 – 2:30PM, Water-Wise Landscaping with Mikl Brawner
$25.00 -
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Sun, June 15, 1 – 2:30pm – Berries and Small Fruits for Colorado with Mikl Brawner
$25.00 -
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Sun, June 22, 1-2:30PM – Best Fruit Trees for Colorado with Mikl Brawner
$25.00 -
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Sun, July 13, 1 – 2:30 – How to Mulch, with Mikl Brawner
$25.00 -
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Sat, July 26 – Garden Design 101, with Elaine Walker
$25.00 -
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Sat, Aug 9, 10AM – 11:30AM, Seed Saving 101 with Jess Harper
$25.00 -
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Sun, Aug 10, 1 – 2:30PM – Successful Home Composting, with Mikl Brawner
$25.00 -
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Sun, Sep 7, 1 – 2:30PM – Low Tech Greenhouse Design and Operation, with Mikl Brawner
$25.00