Recent years have witnessed a significant improvement in the adoption and promotion of horticultural technologies among smallholder farmers world-wide and in particular, developing countries. This study is aimed at evaluating the socio-economic factors that significantly determine farmers� decision to adoption of horticultural practices and how knowledge transfer influences urban horticulture. A sample of 580 respondents was used, 138 in Kasarani, 195 in Mathare and 247 in Kibera. Questionnaires were used to collect data from urban farmers and an interview schedule used to collect information from farmers. Social and economic characteristics, accesses to space, access to information, business management and governance data was collected. Frequencies and percentage were used to analyze the data using Statistical Package for Social Sciences (SPSS). It was found that age is significant and has a positive relationship with technology adoption, women are mainly in charge of urban farming and the farmers are spread over all education level and the source of food is the main reason for urban horticulture. The chi�square was used to differentiate different groups and conclusions. The findings show that there is a positive relationship between occupation in peri-urban and reason for adoption of urban technologies. The study also shows that there is positive relationship between age in peri-urban and technology transfer. More than 65% of the respondents were female. There is a negative relationship between education level and technology transfer. The results from this study will enable technology implementers, policy makers and local leaders to promote appropriate technologies to the residents which will lead to increased food supply, ensure food security for active and healthy life.