INTA promotes rosella cultivation in Misiones, Argentina

The National Institute of Agricultural Technology (INTA) Cerro Azul has developed technical guidelines to promote the cultivation of rosella (Hibiscus sabdariffa L.) in the Misiones province of Argentina. This plant offers a potential opportunity for small-scale farmers to diversify their production.

The commercial value of the plant lies in its fleshy, deep red calyxes, which are authorized for use under the Argentine Food Code. These can be used to produce jams, jellies, syrups, beverages, sauces, and natural colorants. Additionally, the plant is increasingly used in infusions and yerba mate blends due to its antioxidant properties, including anthocyanins and flavonoids.

Technical recommendations for successful cultivation include spring planting to avoid frost, as the plant is short-day and flowers after December 21. Experts suggest soaking seeds for 24 hours to achieve an 85% germination rate and recommend a spacing of 1 meter between rows and 0.80 meters between plants. The crop requires full sun exposure and well-drained soil, with weed control being critical during the first 50 days of growth.