Join us for the first Lilac Sunday since 2019! We’ll be celebrating 150 years of Arboretum history and 112 Lilac Sundays.

Experience the springtime bloom of our renowned collection of nearly 400 lilacs. Visit for tours with Arboretum experts, hands-on children’s programming, and more.

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The first person who will set foot on Mars is alive right now. We believe this, but even if we're wrong we know the first crew to arrive there will look nothing like the ones that landed on the Moon fifty years ago.

Our world has changed for the better, and ASTRONAUTS tells the story of the women who built this better world. The main character and narrator is Mary Cleave, an astronaut you may not have heard of. It's not because so many people have been to space; only a few hundred have! It’s because this graphic novel isn’t about fame. No astronaut you'll ever meet took the...