• Zone IV ‘Gardens on the Hill’ Flower Show

    (for adults) The Summit Garden Club (SGC) invites the public FREE of charge to experience a day filled with beauty, creativity, and education at The Garden Club of America’s (GCA) Zone IV Flower Show, Gardens on the Hill. The Flower Show will feature floral design, horticulture, and photography. The educational focus showcases the benefits that…

  • Beginner’s Guide to the Wonder of Trees

    (for adults) Are you passionate about trees but don’t necessarily know a lot about them? If so, then this hands-on, beginner-level class is for you! In it, we will learn basic facts about trees, such as tree identification, how to determine the age of a tree, tree and leaf anatomy, the many processes of trees,…

  • The Geology of the Watchungs

    (for adults) The geologic history of the Watchung Mountains has been shaped by fire, ice, and the powerful movement of the Earth’s crust. But how is Berkeley Heights different from Scotch Plains? Geologist Ruth Yablonsky will uncover the answers to this and many more fascinating questions. Join us for an engaging journey into the unique…

  • Beginner’s Guide to the Wonder of Trees

    (for adults) Do you LOVE trees but don’t know a lot about them? If so, this hands-on, beginner-level class is for you! Learn basic facts about trees, such as tree identification, how to determine the age of a tree, tree and leaf anatomy, the many processes of trees, what products come from trees, tree adaptations,…

  • Bringing Blooms Home: Choosing the Best Flowering Trees for Your Garden

    (for adults) John Beirne, Director of Horticulture, will present a lecture on flowering trees that are well suited to gardens of any size. Learn about trees that not only bloom beautifully throughout the gardening season, but also offer year-round benefits such as shade, vibrant autumn color, wildlife-supporting fruit, pollinator value, and attractive winter form. John…

  • Bringing Blooms Home: Choosing the Best Flowering Trees for Your Garden

    (for adults) John Beirne, Director of Horticulture, will present a lecture on flowering trees that are well suited to gardens of any size. Learn about trees that not only bloom beautifully throughout the gardening season, but also offer year-round benefits such as shade, vibrant autumn color, wildlife-supporting fruit, pollinator value, and attractive winter form. John…

  • Beyond Beech Leaf Disease: Saving Our Beeches Together

    (for adults) Join John Beirne, Director of Horticulture, for an inspiring talk on the ongoing efforts to protect our beloved beeches—both here at the Arboretum and in your own backyard. Beech Leaf Disease has spread rapidly across the Northeast, threatening the health of these treasured trees and disrupting the balance of our woodlands. Yet, there…

  • Full Moon and Floral Libations

    (for adults) Join us in celebrating May’s full “Flower Moon” with an evening designed to honor spring in all its blooming beauty. Craft a floral-forward mocktail, raise a toast to the season, and wander on a guided moonlit walk through the Arboretum. Hosted by Friluftsliving Family’s Tacy Quinn, this enchanting gathering welcomes the season of…

  • Selecting Trees That Thrive in Urban and Suburban Landscapes: Free + 1 Continuing Education Unit (CEU)

    (adults) Guest Speaker: Vincent Simeone, Horticulturist, Lecturer, and Garden Writer Selecting the right tree for the right location in urban and suburban settings can be surprisingly challenging. These environments place unique demands on plants, and only certain species and cultivars truly thrive in parks, traffic medians, streetscapes, and naturalized areas. In this lecture, Vincent Simeone…