Season's Greenings at the U.S. Botanic Garden
✓ Verified 2025-2026
Where: U.S. Botanic Garden, 100 Maryland Ave SW, Washington, District of Columbia
When: November 27 - January 4; closed December 25
Hours: 10:00am-5:00pm, with late nights on Dec 9, 11, 16, 18, 23 and Jan 1
Cost: free
model trainspoinsettiasminiature landmarksstring lights2025 dinosaur themeattraction
G-gauge model trains wind through displays built entirely from plant materials, alongside thousands of poinsettias and miniature versions of DC landmarks such as the Martin Luther King, Jr. Memorial crafted from organic matter. The 2025 edition carries a dinosaur theme.