An elm is a type of tall, graceful tree known for its arching branches that spread wide like an umbrella. Elm trees can grow over 100 feet high, and their leaves have jagged edges with visible veins running through them. For centuries, elms lined the streets of American towns and cities, creating beautiful tunnels of shade that made neighborhoods feel cool and peaceful in summer.

Sadly, many of America's elm trees died in the 1900s from a disease called Dutch elm disease, spread by beetles that burrow under the bark. Millions of these magnificent trees disappeared from parks and streets. Scientists are now working to develop disease-resistant elms so future generations can enjoy them again.

The wood from elm trees is tough and bends without breaking easily, which made it useful for building ship parts, furniture, and even hockey sticks. You might see elm as part of a street name, like Elm Street, marking places where these grand trees once stood.