“Grow” your gardening know-how. Our free online gardening program, Let’s Talk Gardens, covers a wide range of topics presented by our own professional staff, as well as guest speakers. No matter your level of gardening knowledge, there’s always something new to learn!

Smithsonian Gardens is also proud to partner with the National Museum of African American History and Culture to bring you Let’s Talk African American Gardens!

This series is based on chapters of H. Hamilton Williams’ 1943 publication of Handbook of the Negro Garden Club of Virginia. It explores the rich history of African American foodways and horticulture practices and celebrate the ways that black people are using these traditions to face today’s world.

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Catch up on past webinars by visiting our Let’s Talk Gardens Video Library.

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All programs include auto-generated captions. ASL interpretation is available for webinar programs with a two-week advanced notice. To request this service, please email gardens@si.edu.

Upcoming Programs

June 26, 2025, 12:00-1:00 p.m. ET

The Flight Garden at the National Air and Space Museum

Speaker: Alex Dencker

Register Here!

After more than a decade, the Smithsonian National Air & Space Museum (NASM) revitalization is nearly complete. Along with a complete redesign and rebuild of the interiors, the garden outside the building was redesigned and replanted. Join Smithsonian Gardens horticulturist Alex Dencker for a look at the new Flight Garden at NASM. Alex will highlight some of the 14,300 perennials (75 taxa) and 122 trees (11 taxa) planted since March 2024 and share how the garden will invite visitors to explore the beauty and wonder of flight through the lens of plants. 

 Alex Dencker is a horticulturist for Smithsonian Gardens at the Flight Garden at the National Air and Space Museum.