OPEN GARDEN EVENTS
Visit the Home of the World-Famous Knock Out® Family of Roses
Experience Will Radler’s Botanical Garden and Rosarium
A visit to Radler’s Rosarium is an opportunity to experience one of Greenfield’s local treasures. The sloping garden uses stone to create terraces, raised beds, waterfalls, and a very large fireplace and seating area. Ponds, sculpture and an extensive stream meanders through the yard providing home to Radler’s tame goldfish. There is even a three-story Garden shed with observation deck. And, there is a Knock Out Rose trial garden. The Knock Out Rose is widely considered to be one of the most popular and successful roses in the world. Will and his staff will be available to help visitors understand the vast gardens.
The Garden of Will Radler’s Dreams.
The Milwaukee Journal Sentinel paid a visit to the Rosarium back in July 2020. Here’s a look at what you might see at an Open Garden Event!
2026 Open Garden Events
Allowing access to his Rosarium is one way Will Radler supports non-profit organizations. Event entrance fees are set by designated non-profits who receive 100% of the funds.
Send an email to roseinnovations@gmail.com to schedule a visit for groups.
Please check out our schedule of Open Garden Events for 2026 below.
THE 2026 OPEN GARDEN FLYER IS COMING SOON
National Knockout Day Celebration and Open Garden to benefit Milwaukee PBS
Milwaukee PBS educates, informs, entertains, and stimulates the imagination of adults and children alike. We make the best use of noncommercial media and related services to enhance the quality of life in our community by encouraging people to consider issues and explore ideas, and by inspiring a continued sense of wonderment.
Learn more at: https://www.milwaukeepbs.org/
Open Garden to benefit the Greater Milwaukee Rose Society
The Greater Milwaukee Rose Society was formed in 1946 with the mission to promote interest in all aspects of rose horticulture thru education, programs, rose shows, garden tours, and participation in rose related community projects. We are an affiliate of the American Rose Society, and as such a member of the North Central District of the American Rose Society.
Learn more about them at milwaukeerose.org.
Open Garden to benefit the Greenfield Beautification Committee
The Greenfield Beautification Committee has worked steadily over the past two decades to beautify the city of Greenfield and in doing so, we have also fostered a growing sense of community and pride! We strive to develop, promote, and facilitate this improvement by using natural elements of earth, trees, and flowers. We work cooperatively with Greenfield’s citizens, both residential and commercial, to achieve this goal.
Learn more about them at gbcinfo.org.
Open Garden to benefit the Friends of the Boerner Botanical Gardens
The mission of the Friends of Boerner Botanical Gardens, Inc. is to provide a garden setting for learning that nurtures understanding, enjoyment, and stewardship of our natural world, while nourishing and preserving the gardens for future generations.
Learn more about them at boernerbotanicalgardens.org.
Open Garden to benefit the Wisconsin Hardy Plant Society
The Wisconsin Hardy Plant Society is a membership of garden enthusiasts who learn, teach and work to grow healthy, long-lasting gardens. We were founded in 1989 by a group of individuals who wanted to promote the love and appreciation of hardy herbaceous plants to every level of gardener. Today, we have over 800 members.
The Wisconsin Hardy Plant Society is a 501(c)(3) non-profit whose mission is to promote interest and participation in hardy plant cultivation by providing education about herbaceous and woody plants by various means and by promoting the exchange of desirable plant material within the structure of the organization.
Learn more about them at wisconsinhardyplantsociety.org.
Open Garden to benefit the Wisconsin Hardy Plant Society
Open Garden to benefit the Wisconsin Hardy Plant Society.
Open Garden to benefit Friends of Boerner Botanical Gardens
Open Garden to benefit Friends of Boerner Botanical Gardens.
Open Garden to benefit the Greenfield Beautification Committee
Open Garden to benefit the Greenfield Beautification Committee
Open Garden to benefit Greater Milwaukee Rose Society
Open Garden to benefit the Greater Milwaukee Rose Society.
