Curious about what a tree can say? Take the tour designed by third-graders at the Lowell School yourself!

Where: Lowell School, 1640 Kalmia Rd. NW, Washington.

What: You need a cellphone. Then walk around the campus and call the numbers on the signs next to the trees. If you want to hear what the tour is like before you go, ask your parents if you can call 202-577-2068, extension 4108, to hear about Azur’s tree, a dogwood.

When: You can take the tour anytime school is not in session or come to the Lowell School Bazaar on October 20, 11 a.m. to 3 p.m.

How much? Free!

WASHINGTON DC-SEPTEMBER, 20: Lowell school students created a tour of trees on their campus complete with cellphone interaction. (JUANA ARIAS/FOR THE WASHINGTON POST)