The Stromanthe sanguinea is an evergreen herbaceous plant native to southern America; it has creeping rhizomatous roots, fleshy, which produce large clumps of leaves, carried by a long stiff, fleshy stem; they are 15-30 cm long, thick and rigid, dark green on the upper side, purple on the lower side. In spring they produce erect stems, up to 50-60 cm tall, which carry small spikes of pink or white, very particular flowers. S. sanguinea 'Tricolor' has variegated leaves, dark green, white and pink. These plants are very decorative throughout the year, very suitable for bright corners of the house. However, it is a matter of plants that are not too easy to grow: they need wet environments both during the summer and winter seasons to grow at their best.
Since these plants are very sensitive to temperature, special attention must be paid to the position in which we will place the vases in the house. Exposure is an indispensable element to keep in mind if we wish to cultivate these species to the fullest. Then place the Stromanthe sanguinea in a shady but bright place, never directly exposed to sunlight; during the season they can be placed outdoors, in the shade.
From March to November water regularly, trying to keep the soil constantly moist, during the cold months, reduce the watering, leaving the soil to dry slightly; it is advisable to vaporize the leaves often to increase the environmental humidity. In the vegetative period, provide fertilizer for green plants, every 25-30 days. During the entire course of the year, the most important aspect to consider is precisely the humidity of the environment in which your Stromanthe lives: humidity is the essential condition for the development of this species.
They are grown in a soft, light soil, rich in humus, very well drained; you can prepare an ideal soil for these plants by mixing some universal soil with a few shredded barks and some handfuls of pumice stone. Repotting takes place every year during the spring season. It is necessary to use a wider and deeper container to allow the plant to develop its root system. During spring and summer, it is recommended to administer liquid fertilizer together with the water used to help the plant grow at its best! As for pruning, it is usually not performed as there is no need to cut or shorten the branches. Only remove the damaged or dry parts, often the primary cause of the development of fungal diseases.
The rhizomes tend to constantly produce new small plants, which can be divided from the mother plant and repotted as individual specimens; this operation is practiced in autumn and is known by the term multiplication by division. For this operation, use clean, disinfected and well sharpened work tools to make clean cuts and avoid fraying.
Stromanthe sanguinea: Parasites and diseases
They fear rust, cochineal and root rot.