All Day

Apply for a Free Tree in DC

(DC) (Casey Trees) Get Free Trees to accentuate your home with a beautiful shade tree at no cost. To register, submit an application with Casey Trees and one of their professional Urban Foresters will be in touch to start your process.

Orchid Care

US Botanic Garden 100 Maryland Ave SW, Washington DC

(DC) (US Botanic Garden) Want to know more about orchid care and maintenance? Drop by the Conservatory's Garden Court to talk with George about orchids! Bring your questions and connect with USBG plant science professionals in this Expert Is In program.

Project Feederwatch

Locust Grove Nature Center 7777 Democracy Blvd, Bethesda

(MD) (Montgomery Parks) Are you interested in birding? Do you want to be part of a national community science project? Then, join us for Project FeederWatch. Project FeederWatch is a seasonal community science project, where participants count the different species of birds that flock to a bird feeder. All levels of birders are welcome. This project meets weekly on Thursdays ...

The Natural World on the Microscale (Virtual)

(MD) (Natural History Society of Maryland) Step into the invisible world that curiosity and cutting‑edge imaging make visible. In this talk, Dr. Tagide deCarvalho will share the stories and techniques behind her striking microscopy images—revealing how modern optical and electron microscopes open windows into cells, viruses, and other hidden structures of life. Expect a presentation that blends science, storytelling, and ...

Free – $5

Conservation Cafe: DC Environmental Progress (Virtual)

(DC) (Nature Forward) Join Nature Forward for a timely discussion about DC's environmental progress and how the lack of statehood and ongoing attacks on Home Rule hurt our local environment and communities. We will hear from a distinguished panel of experts and activists on the unique threats to a greener, more equitable city and how residents can meet this challenge.