<p>Container gardening on roof tops of high rise buildings in urban areas helps to mitigate the ill effects of urbanization and also acts as a&#xa0;carbon and heat sequestering source. The experiment was carried out with the objective to standardize container size, which influences the success of fruit culture in containers. Hence, an experiment was carried out at the Indian Council of Agricultural Research—Central Institute for Subtropical Horticulture (ICAR-CISH), Lucknow, Uttar Pradesh, India, to standardize the type of containers for growing different types of fruits. Various sizes of containers (C1: 45 cm × 45 cm, C2: 30 cm × 45 cm and C3: 30 cm × 30 cm) were evaluated for growing different fruits such as guava (<i>Psidium guajava</i>), kagazi lime (<i>Citrus aurantifolia</i>) and pomegranate (<i>Punica granatum</i>). The results indicated that the maximum above-ground growth in pomegranate, citrus and guava was recorded in container&#xa0;1 (C1: 45 cm × 45 cm) and the minimum growth was recorded in container&#xa0;3 (C3:30 cm × 30 cm). The maximum fresh root mass, root-to-shoot ratio and plant height (131.00 cm) were recorded in C1. The maximum fruits plant⁻¹ (39.33) and average fruit mass (139.67 g/fruit) were recorded in pomegranate grown in C2 containers. The maximum average number of fruits per plant and fruit mass were recorded in C2 containers in citrus and guava. Shoot and root mass had a&#xa0;positive correlation with root zone temperature in pomegranate, citrus and guava, while the fruits plant⁻¹ and fruit mass were negatively correlated. The containarised plants of pomegranate had more root and fruit mass, however citrus and guava root mass and fruit mass were negatively correlated.</p>