An adult Dragna, usually, has its basis formed by three stems which entwine themselves and sustain the plant's three mouths. Its predominant color is light green in both, stems and leaves. The inside of the mouths is red and the bristles around it may vary between both dominant colors. The vines are connected to the stems; they are also green with small leaves along their length.

This plant is really carnivorous. Its feeding process consists in digesting the victims that starts by the time the prey is, literally, thrown into one of Dragna's mouths. Once there, the plant shuts itself and entwines the bristles which are disposed around its mouth. This way, the victim is imprisoned in a sort of digestion chamber. Then a liquid, like a gastric acid, fills this chamber. It acts only on the prey's flesh, digesting it.

A Dragna is able to feel the vibration generated by any movement near it. In addition to that, it is able to dimension size and weight of anything, as long as it is in touch with the nearby ground. This is how it decides whether or not to attack.