• The Science Behind Houseplants (Virtual)

    (DC) (Smithsonian Associates) By understanding how plants work, you can be more successful at caring for them, since knowledge of basic plant biology can be a valuable tool for indoor gardeners fascinated by plants and their unique characteristics. Virginia Velez Thaxton, a horticulturist with the Interiors Section of Smithsonian Gardens, explores the essential factors plants need from their environment and ...

    $25 – $35
  • Seed Cleaning at Earth Sangha

    Earth Sangha 51011 Backlick Rd, Annandale, VA, United States

    (VA) (Earth Sangha) Help Earth Sangha clean and prepare native seeds for spring planting. Seed cleaning will take place every Sunday through the winter.

  • Seed Cleaning at Earth Sangha

    Earth Sangha 51011 Backlick Rd, Annandale, VA, United States

    (VA) (Earth Sangha) Help Earth Sangha clean and prepare native seeds for spring planting. Seed cleaning will take place every Sunday through the winter.

  • Seed Cleaning at Earth Sangha

    Earth Sangha 51011 Backlick Rd, Annandale, VA, United States

    (VA) (Earth Sangha) Help Earth Sangha clean and prepare native seeds for spring planting. Seed cleaning will take place every Sunday through the winter.

  • Exploring the World of Plants (Virtual)

    (VA) (Virginia Native Plant Society) We rely on plants for food, shelter, and many other functions. We learn early that they convert sunlight to energy, but we often remain largely “plant blind”, allowing them to form a backdrop for our lives with little understanding or appreciation. This program will lead us on a journey to consider research and discussions over ...

  • Seed Cleaning at Earth Sangha

    Earth Sangha 51011 Backlick Rd, Annandale, VA, United States

    (VA) (Earth Sangha) Help Earth Sangha clean and prepare native seeds for spring planting. Seed cleaning will take place every Sunday through the winter.

  • Winter 2026 Volunteer Seed Packing & Free Movie

    MLK Public Library 901 G St. NW, Washington, DC, United States

    (DC) (Slow Food DC) Volunteer to join us for 90 minutes to help repackage bulk vegetable and flower seeds so they can be donated to the DC community.  The seeds have been purchased or received as donations in bulk packs, and they need to be separated out into small seed packs (5-10 seeds each) that meet the needs individual gardeners ...

  • Orchid Care

    US Botanic Garden 100 Maryland Ave SW, Washington DC, United States

    (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.