gradens contain plants & gardens are located outside ->  the plants in the gardens are located outside  the plants in the gardens are located outside & if something is outside during the day then that something will receive sunlight ->  the plants in the gardens will receive sunlight during the day  the plants in the gardens will receive sunlight during the day & a plant requires sunlight to grow ->  the plants in the gardens will receive sunlight to grow during the day  the plants in the gardens will receive sunlight to grow during the day & summer has the most sunlight -> the plants in the gardens will receive the most sunlight in summer to grow during the day