Thanks for starting this thread, Ric! I'm lucky to be so close to the National Arboretum but hardly ever went before this year. I made a New Year's resolution to go more often and have actually followed through! I've taken a class, checked out their bonsai exhibition, and plan on taking more classes this spring. And they have their annual sale next month! It's dangerous to shop there with your credit card.
I also highly recommend their full moon hikes to anyone interested in nighttime hiking.
:thumbsup: