The North American Rock Garden Society Piedmont Chapter Lecture is an educational presentation focusing on the design and maintenance of alpine greenhouses. Guest speaker Sandra Schaller will share insights from the Bronx on cultivating miniature landscapes and small-scale plants. The session takes place in the Ruby C. McSwain Education Center. This lecture is best suited for adults and quiet teenagers with an interest in horticulture. While the arboretum grounds are open to all ages, the lecture itself requires focused attention. Admission details are not specified, but parking at the arboretum is free and readily available in the main paved lot. Combining this presentation with a walk through the surrounding gardens makes for a relaxing Saturday afternoon. You can explore the paved pathways and see the changing seasonal foliage before heading inside for the talk.