chenopodium ambrosioides popularly called as mastruz, Caesalpinia ferrae, Spilanthes acmella are the plants used for the treatment of tuberculosis you can try any of these plants for scrofula but not sure if it will work or not. among the above mentioned plants C.ambrosioides is the most commonly used medicinal plant for the treatment of the tuberculosis
Scrofula is a condition in which the bacteria that causes tuberculosis causes symptoms outside the lungs. This usually takes the form of inflamed and irritated lymph nodes in the neck. Doctors also call scrofula “cervical tuberculous lymphadenitis”: Cervical refers to the neck.
and for plant used for scrofula please check the link
Shilajatwadilauha, Rajmriganka rasa, Mukta Panchamrita Rasa for tubercular lymphadenitis. For cervical tuberculous lymphadenitis, the above Ayurveda formulations may require extensive research with the modern scientific tools.