A Kansas City Gardening Original

The Kansas City Garden Symposium presented by Gardeners Connect is one of the premier gardening events in the region since 1998.

We bring to the stage the best in local, regional and national garden experts and talent to educate and inspire gardeners of all skill levels.

Registration

2026 Kansas City Garden Symposium

Saturday, March 21, 2026
9:00 a.m. - 2:30 p.m.
Doors Open at 8:00 a.m.

Tickets: $99 through February 28
Tickets: $125 beginning March 1

Rockhurst University Campus
Science Center 115
54th and Troost Entrance
Kansas City, Missouri 64110


See Building #25 on
map.

St Ignatius Science Center is a short walk from the parking lot, North to the second building on left. It is possible to reach the lecture hall with no stairs.

Three Speakers. Four Presentations. Lunch. Snacks. Gift Bag. A Room Full of Gardening Friends.

Knowledgeable, professional garden designers with hands-on experience will share their ideas for creating beautiful, interesting garden spaces!

Presentations include:

  • Containers That Create Spaces

  • Noteworthy Plants from Chanticleer

  • What’s That Doing In a Rose Garden?

  • Elements of Cool & Desirable Gardens

Purchase Tickets Here!

Register online above or send check made out to Gardeners Connect to:

Gardeners Connect
PO 8454
Kansas City, Missouri 64114

Please include email address with check if available for quickest notification of registration.

Speakers.

David Mattern

Chanticleer

Containers That Create Spaces &
Noteworthy Plants at Chanticleer

David Mattern is the horticulturist at Chanticleer who cares for the Teacup Courtyards and Vegetable Garden. Famed Chanticleer is a 48-acre botanical garden in Wayne, Pennsylvania, about 30 miles from Philadelphia.

Mattern is a graduate of the Professional Horticul￾ture Program at Longwood Gardens, where he is an in￾structor. He holds a degree in landscape contracting with an empha￾sis on design and a minor in horticulture from Penn State University. His gardening experiences extend internationally, includ￾ing England and South Africa. Mattern is renowned for his innovative approach to container design.

Sue Waltemath, a member of the Kansas City Garden Symposium Committee, lobbied to invite Mattern to Kansas City.

“I met David on a trip to France with the International Clematis Society. During the trip Linda Beutler (garden author and curator of the Rogerson Clematis Collection in Oregon) and Jeff Jabco (of the Scott Arboretum in Phila￾delphia) both made a point of recommending David’s container garden presentation. Last May, I visited Chanticleer and was able to appreciate his talents firsthand,” she said. “I can’t wait to hear him talk!”

Chanticleer was developed as a country summer retreat for the Rosengarten family, whose pharmaceutical firm in the 1920s would become part of Merck and Co. Chanticleer opened to the public in 1993.

The London Times last June declared Chanticleer “America’s most inspiring garden.” The Teacup Courtyards designed and cared for by Mattern were singled out by journalist Ann Treneman in the London Times article.

“I had no idea, until Chanticleer, that you could create such beauty in containers (and I have had a container garden at RHS Chelsea),” she wrote. “The mostly tropical planting, dotted around the house terraces and what is called the ‘Teacup’ Garden (after a central stone ‘teacup’ brought back from Italy) is fabulous. ...

What a ‘wow’ garden this is.”

Describing his program

“Containers That Create Spaces,” Mattern says at Chanticleer the gardeners are constantly challenging themselves, creating moments in the garden that changes the experience along the journey. The challenge can be how do you rethink the same space every year? Or improve it?

This is where containers are a creative solution.

“A lot of times we think of the plant combinations and container design within the container. That’s the fun stuff. Where you put them is just as important,” he said.

Mattern plans to discuss the bigger picture, looking at how containers create spaces, the feeling of a space, and how containers fit into the greater context of the home and garden.

He also plans to describe “Noteworthy Plants at Chanticleer.” He invites us to take a journey through a season at Chanticleer as he offers his perspective of the iconic plants at Chanticleer. This curated list highlights woody plants, herbaceous annuals and perennials, as well as tropicals for the home gardener. Emphasis will be placed on how these plants fit within the garden, and how they can be combined with other plants.

Leslie Hunter

Greater Des Moines
Botanical Garden

What’s That Doing in a Rose Garden?

Leslie Hunter is the horticulture manager at the Greater Des Moines Botanical Garden, where she has been since 2015. During this time, Leslie has managed several garden areas, including the Koehn Perennial Border, The Gardeners’ Show House, and the Wells Fargo Rose Garden.

Leslie earned her bachelor of science in horticulture from Berry College in Rome, Georgia, and she also holds a bachelor of science degree in nursing from Mercy College of Health Sciences in Des Moines, Iowa.

She has been working in public gardens since 1996 since graduating college. Her love of roses began with her first job out of college at the Dallas Arboretum. There she learned firsthand how tough roses truly are. At the Atlanta Botanical Gardens, she honed those skills and incorporated a more organic approach to the care of roses.

Since 2015, when the Greater Des Moines Botanical Garden reopened after an extensive renovation, she has been nurturing the Wells Fargo Rose Garden, or as she calls it, the “Garden WITH Roses.” By applying an organic and sustainable approach of interplanting with perennials, bulbs, vines and reseeding annuals, Leslie has created a garden with all-season interest and better overall health for both plants and people.

During her talk, “What’s That Doing in a Rose Garden?,” she will discuss garden design and touch on layered gardening, companion planting, the blessings and curs￾es of reseeding annuals, and incorporating bulbs into a garden.

She aims to make a rose garden sustainable and attainable.

“Many people I talk to express how they perceive roses as a lot of work. I try to show them that indeed they are only as hard as you want to make them,” Hunter said.

Anne Wildeboor

Overland Park Arboretum
and Botanical Garden

Elements of Cool & Desirable Gardens

Anne Wildeboor is the horticultural supervisor at Overland Park Arboretum and Botanical Garden. She joined the staff there in 2014 after several years working at Powell Gardens.

She is a K-State University graduate with a degree in agriculture/horticulture.

There are some very wonderful gar￾dens at the Overland Park Arboretum and Botanical Gardens (and elsewhere, too).

What makes them successful? Why do those garden spaces speak to us? Wildeboor plans to discuss what makes a garden cool and desirable and how can we implement those elements into our own gardens.

Garden Symposium Schedule 2026

Big Ideas, Small Spaces

Saturday, March 21, 2026

8:00-8:55 Check-In, Mingle with coffee

8:55-9:00 Welcome

9:00-10:00 Speaker: Coming Soon

10:00-11:00 Speaker: Coming Soon

11:00-12:15 Lunch in Cafeteria

12:15-1:15 Speaker: Coming Soon

1:15-1:30 Break

1:30-2:30 Speaker: Coming Soon

2:30-2:35 Closing Remarks

Become a Sponsor

2026 Kansas City Garden Symposium Sponsorship Opportunities

Register online to left or send check made out to Gardeners Connect to:

Gardeners Connect
PO 8454
Kansas City, Missouri 64114

Please include email address with check if available for quickest notification of registration.

As a 2026 Kansas City Garden Symposium sponsor, you will not only reach our local, dedicated and loyal gardeners who will attend the day of the event but also more just like them:

  • 2,000+ email subscribers.

  • 2,300+ Facebook followers.

  • 500+ Gardeners Connect members.

We have multiple sponsorship levels available to reach the audience you desire and provide the impact of supporting your community through your sponsorship of the 2026 Kansas City Garden Symposium.

Our signature sponsorship opportunity is as our bag sponsor. Your name and logo will appear on the front of our reusable bag that every attendee will receive and use for years to come.

Opportunity to provide your custom inserts into the attendee bag.

Sponsor recognition on website, in Gardeners Connect newsletter, in emails and on Gardeners Connect social media postings.

Additional opportunities at the full, half and quarter page levels.

See the full list of sponsors below starting January 1.

Be a Garden Symposium Sponsor

Venue.

Rockhurst University
Science Center 115

54th and Troost Avenue Entrance to Rockhurst University

Building #25 on map located to the right. Building is a short walk from the parking lot, North to the second building on left. St Ignatius Science Center. It is possible to reach the lecture hall with no stairs.

A 165 seat auditorium with table space for every attendee to take notes with a great view of the presentations for the day.

Onsite free parking.

 

Master Gardeners & Master Naturalist Continuing Education

Many Master Gardener and Master Naturalist organizations throughout the region offer continuing education hours for attending the Kansas City Garden Symposium.

Please consult your local organization for details and specifics to their continuing education requirements.

The following organizations have offered continuing education credits for prior Kansas City Garden Symposiums.

Want your organization to be listed here? Contact Brian Chadwick-Robinson, executive director of Gardeners Connect at info@gardenersconnect.org for details of offering continuing education hours for your organization.

Create Your Garden Masterpiece.

2025 Kansas City
Garden Symposium

A Midwestern Garden is defined by hospitality and the enjoyment not only of the gardener but their family and friends. We discuss ways to enliven our gardens as living space, entertaining venues and places we can revel while spending less time maintaining them and more time living in them.

Three speakers. Four presentations. Lunch. Gift bag.

A day of gardening with Family & Friends.

2024 Kansas City
Garden Symposium

Vivid Gardens, Midwest Moxie exemplifies the spirit and drive of Midwest Gardeners to create beautiful and dynamic gardens that evoke the style, sense of place and challenging environment they have while never saying never.

Four speakers. Six presentations. Lunch. Gift bag.

A day of gardening delight you won’t want to miss.

2023 Kansas City
Garden Symposium

“Garden Obsession” is all about the gardens and plants that entice, beguile and make gardeners obsess.

Three speakers. Six presentations. Lunch. Gift bag.

A day of gardening delight you won’t want to miss.

Grow Your Own Way Logo

2020 Kansas City
Garden Symposium

“Grow Your Own Way” spoke to the ideals of nearly every gardener. To glean ideas, inspiration and different viewpoints from the gardens we visit and the gardeners we have met and modify, adapt and integrate those gleanings to our own gardens and style. Truly gardening our own way.

2018 Kansas City
Garden Symposium

“Growing a Greener Garden” delved into ways to make our gardens more resilient to the extremes of gardening in the Midwest by selecting the correct plants, the right design and the best practices to not only make our gardens greener for ourselves but also that of our communities and the creatures that inhabit it.

Garden Symposium Chronicles

2024 Kansas City Garden Syposium
Vivid Gardens, Midwest Moxie

Rockhurst University, Arrupe Hall
Kansas City, Missouri

Speakers:
Irvine Etienne
Lisa Nunamaker
John Porter
Susie Van de Reit
Julie Copley

2023 Kansas City Garden Syposium
Garden Obsession

Rockhurst University, Arrupe Hall
Kansas City, Missouri

Speakers:
Joseph Tychonievich
Ed Lyon
Chris Fehlhaber

2020 Kansas City Garden Syposium
Grow Your Own Way

Rockhurst University, Arrupe Hall
Kansas City, Missouri

Speakers:
Brie Arthur
Alan Branhagen
Jeff Epping
Nick McCullogh

2018 Kansas City Garden Symposium
Growing a Greener Garden

Rockhurst University, Arrupe Hall
Kansas City, Missouri

Speakers:
Carol Davit, Executive Director, Missouri Prairie Foundation
Tammi Hartung, Owner, Desert Canyon Farm
Joe Lampl, Host, Growing a Greener World
Kelly Norris, Director of Horticulture, Greater Des Moines Botanical Center

2016 Kansas City Garden Symposium
Sow Your Garden Adventure

The Nelson Atkins Museum of Art, Atkins Auditorium
Kansas City, Missouri

Speakers:
Lucy Hardiman, Garden Writer and Designer
Dan Hinkley, Author, Plant Explorer, Co-Founder of Heronswood Nursery
Jan Johnsen, Author and Garden Designer
Troy Marden, Author and Host, The Volunteer Gardener

2014 Kansas City Garden Symposium
Color Outside the Lines

The Nelson Atkins Museum of Art, Atkins Auditorium
Kansas City, Missouri

Speakers:
Keri Ann Mendez, Owner, Perennially Yours
Julie Moir Messervy, Author and Garden Designer
Amanda Thomsen, Author and Commercial Landscaper
Joseph Tychonievich, Author and Nursery Manager, Arrowhead Alpines Nursery

2012 Kansas City Garden Symposium
Grow the Good Life

The Nelson Atkins Museum of Art, Atkins Auditorium
Kansas City, Missouri

Speakers:
Andrea Bellamy, Garden Writer
Roy Diblik, Garden Designer and Owner, Northwind Perennials
Dan Heims, Author and Owner, Terra Nova Nursery
Ellen Ecker Ogden, Author and Kitchen Garden Designer

2010 Kansas City Garden Symposium
Beauty Woven with Practicality

The Nelson Atkins Museum of Art, Atkins Auditorium
Kansas City, Missouri

Speakers:
Suzy Bales,
Stephani Cohen,
Rosalind Creasy,
Claire Sawyers,

2008 Kansas City Garden Symposium
Make Your Garden a Work of Art

The Nelson Atkins Museum of Art, Atkins Auditorium
Kansas City, Missouri

Speakers:
Rosemary Alexander, Founder, the English Garden School
Jennifer Bartley, Author and Landscape Designer
Dan Benarcik, Horticulturist, Chanticleer
Richard Reames, Owner Arborsmith Studios

2006 Kansas City Garden Symposium


Kansas City, Missouri

Speakers:
Karen Bussolini
Tres Fromme
Carol Reese
Steve VanderWoude

2004 Kansas City Garden Symposium
Make Your Garden a Work of Art

The Nelson Atkins Museum of Art, Atkins Auditorium
Kansas City, Missouri

Speakers:
Alan Armitage
Bill Luchsinger
Janet Macunovich
Karen Strohbeen
Roger Swain

2002 Kansas City Garden Symposium


Kansas City, Missouri

Speakers:
Cole Burrell
Richard Darke
Tracy DiSabato-Aust
Ryan Gainey
Pamela Harper

2000 Kansas City Garden Symposium


Kansas City, Missouri

Speakers:
Neil Diboll
Chris Hansen
Lauren Springer
Roger Swain
Chris Woods

1998 Kansas City Garden Symposium


Kansas City, Missouri

Speakers:
Joe Eck
Nancy Goodwin
Dan Hinkley
Roy Lancaster
Dr Richard Lighty
Lauren Springer