Urban landscape restoration and conservation initiatives are challenged by financial and other constraints. Consequently, these initiatives are increasingly reliant on volunteer stewards. Knowledge of why people volunteer to restore and conserve urban ecosystems can help practitioners enhance volunteering as a social-ecological process that is mutually beneficial to landscapes and people. We included two open-ended questions about why people volunteer and what they perceive as benefits of volunteering, in a survey of volunteers for urban landscape restoration and conservation in Seattle, WA. Thematic and statistical analyses of volunteer motivations showed that volunteers expressed social psychological motivations more frequently than environmental reasons for volunteering.