ObjectiveTo explore the degree and predictors of and barriers to school garden integration (termed success). DesignA 30-item online survey consisting of demographic, garden characteristic, and barrier questions, as well as the School Garden Integration Scale, was conducted in 266 school garden organizations (13 national, 8 regional, and 245 state or local). ParticipantsA total of 414 school gardeners from 38 states and Puerto Rico. Main Outcome MeasuresSchool garden success using the GREEN Tool. AnalysisDescriptive statistics were used to determine the degree of success of school garden programs and explore barriers. Multiple regression analysis was conducted to determine independent predictors of school garden success. ResultsThe average score was 37 (range 1–53, of a possible 57 points), indicating moderate success. Operating budget (P < .001), operating time (P < .05), and planting in-ground (P < .01) had a positive significant influence on success score, whereas rural location (P < .01) and lacking community interest (P < .01) had a negative significant influence, controlling for race/ethnicity, region, total garden investment, and Community Need Index score (a proxy for socioeconomic status). Conclusions and ImplicationsResults indicate that success of school garden programs may be more difficult for the schools located in a rural area or in the absence of school or community-at-large interest. This study found that race/ethnicity of students and socioeconomic status are not related to success score, which is promising as other research indicates that successful school gardens may be especially impactful for low-income people of color. Causal research is needed to identify strategies that increase school garden success, with a focus on engaging key stakeholders (administrators, teachers, parents, the community at large, and garden coordinators).