• Garden Club, Horticultural Programs

• 19.

American Rhododendron Society

American Rhododendron Society We are a Chapter of the American Rhododendron Society a nonprofit organization whose purpose is to encourage interest in and to disseminate information about rhododendron a genus of evergreen and deciduous shrubs including azaleas.

• Botanical Gardens, Arboreta and Botanical Organizations

• 20.

Rhody Ridge Foundation

Dedicated for the preservation, maintenance and protection of Rhody Ridge Arboretum.

• Botanical Gardens, Arboreta and Botanical Organizations

• 21.

Meerkerk Rhododendron Gardens

Meerkerk Rhododendron Gardens, a nonprofit public garden, encompasses 10 acres of display gardens & 2 miles of trails over 43 acres of peaceful woodland.

• Environmental Education and Outdoor Survival Programs

• 22.

Hardy Plant Society of Washington

Hardy Plant Society of Washington Hardy Plant Society of WA By suzettebirrell on March 17th 2025 Annual Spring Plant Sale Sunday April 13 2025 10am2pm at Center for Urban Horticulture Many hardy perennials ground covers for shade sun.

• Community/Neighborhood Development, Improvement

• 23.

Pleasant Hill Garden Study Club

Organized for the purpose of developing an interest in home gardening and landscape beautification.

• Botanical Gardens, Arboreta and Botanical Organizations

• 24.

Cox Arboretum and Gardens Inc

The Cox Arboretum and Gardens Located in Canton Georgia we are an internationally acclaimed garden featuring one of the largest collections of landscape plants in the United States.

• Botanical Gardens, Arboreta and Botanical Organizations

• 25.

Powellswood Garden Foundation

Welcome to Washington's Secret Garden located in Federal Way, WA.

• Botanical Gardens, Arboreta and Botanical Organizations

• 26.

FAR REACHES BOTANICAL CONSERVANCY

Our mission is to acquire and conserve botanically significant wild and cultivated ornamental plants new to North America, with special emphasis on those that are threatened or vulnerable to loss.

HARDY FERN FOUNDATION

The Hardy Fern Foundation was established to introduce and test the world's temperate ferns for hardiness and ornamental value and to build comprehensive collections for public display, information and education.