Lupinus mutabilis

Tarwi plants should be watered moderately and regularly. Once the top inch of soil has dried slightly, it is time to water your plant again.

Tarwi comes from bright, open habitats and performs best in full sun. It tolerates partial shade but prefers direct sunlight for optimal growth. This plant, which may be annual or biennial, is noted for its sun-loving character.

Tarwi can tolerate a wide range of temperatures, though its distribution may still be restricted by different mixes of moisture and heat. It performs best in warm summer climates with sufficient rainfall or irrigation. Extended periods of cloudy, rainy weather or sustained high temperatures can raise the risk of Tarwi dying. In winter, adequate protection from the cold can increase the plant’s survival rate.

For optimal development, Tarwi needs three fertilizer applications: one before planting, a second about one month after seedlings emerge, and a final one 1 to 1.5 months after the second. Some Tarwi varieties also benefit from an extra fertilizer dose at planting to promote rapid growth.

To encourage more flowers, the Tarwi plant can be deadheaded.

This plant is potentially harmful if not used properly. All parts of the plant, including the unprocessed seeds, if ingested, may result in severe discomfort. Gloves should be worn while handling this plant and hands should be washed after handling.