For free events, you may register online by going to an event's description page.  

For events that require payment, you must submit your payment via mail, fax or phone (see below) as we are unable to accept online payments at this time.

Registration fees will only be refunded in the case of event cancellation by the USBG. Class sizes are limited. Early registration is recommended.

To Pay Via Mail:
Print the registration form which is available as a PDF Document.

Mail to:

Registrar

U. S. Botanic Garden

To Pay Via Fax:

Print the registration form which is available as a PDF Document.

Fax it with credit card information to (202) 225-1561.

To Pay Via Phone:

If less than five business days remain before the event, please use a credit card to pay via phone by calling (202) 226-4082.