P. Viridis leaf for sale grown in the United States
. viridis is a close relative of Psychotria carthagenensis (a.k.a. samiruka or amiruca) of Ecuador. The leaves differ by P. viridis having leaf edges that extend all the way to the base of the leaf stem.
In Ecuador, the name chacruna refers to Diplopterys cabrerana.
Leaves are opposite in arrangement (i.e., produced in pairs along the stems), generally 5–15 cm (2.0–5.9 in) by 2–6 cm (0.79–2.36 in), in outline generally elliptic or often widest above the middle, usually sharply angled at base and apex, papery in texture, overall smooth or infrequently with microscopic plant hairs on the lower surface, have 5–10 pairs of secondary veins, and on the lower surface usually have foveolae (see next item). The leaves are borne on petioles (i.e., leaf stalks) generally 1–10 mm (0.039–0.394 in) long. When dry, the leaves of Psychotria viridis usually are gray or reddish brown and are similar to those of a few other New World species of Psychotria.
Cultivation from cuttings is easiest. A single leaf (or even part of a leaf slightly covered with soil) can be sufficient for a cutting. Propagation from seed is extremely difficult. The germination rate can be as low as 1%. There are approximately 50 seeds/g.[unreliable source?]
Indoor hydroponic cultivation of Psychotria viridisrequires a light cycle. The plant will not utilize its root system as often in daylight hours. Optimal water garden pH is 5.5 to 6.10′. Parts per million (PPM) levels of nutrient solution should be around 300 to 500 PPM. Nutrient solution burning can occur at levels as low as 800 PPM.
Dried P. viridis contains approximately 0.3% dimethyltryptamine (DMT). Other alkaloids such as beta-carbolines and N-methyltryptamine (NMT) have been found. The alkaloid content is said to be highest in the morning.