Coriaria ruscifolia SHANSHI (10 seeds)

Shanshi, also known as Redoul, or Coriaria in Latin, is a shrub from the Coriariaceae family. It grows in the mountains of South America, specifically in Chile and Colombia. This slow-growing tree reaches 4 to 7 meters in height in its natural habitat.

Its foliage is opposite, small, and elliptical with a smooth surface. The leaves are glossy and dark green. The flowers are small and white, grouped in inflorescences, and release a light fragrance. Flowering takes place in summer and early autumn.

The fruits of the Shanshi are small capsules that turn red or brown when mature. They are generally rounded and contain the seeds.

Tanner’s Herb seeds are black, small, and measure only a few millimeters in length.

- Uses:

Coriaria is primarily used in the leather industry for its exceptional concentration of natural tannins. Its leaves and bark allow for eco-friendly leather processing while providing great durability.

In the horticultural field, certain varieties are planted for their remarkable ability to fix nitrogen in the soil. They serve as natural stabilizers for sloped terrain and promote the growth of surrounding species.

Finally, this plant is exploited for the production of deep black dyes used in traditional textile crafts.
WARNING: However, its use remains strictly technical as the plant contains potent toxins that prohibit any human consumption.

- Cultivation and Germination:

• The ideal period to sow Redoul begins in March.
• Stratify the seeds for 7 to 15 days in the refrigerator or directly outdoors during winter.
• Sprinkle them into a previously moistened peat pot.
• Cover the seeds with only 1 to 2 millimeters of substrate.
• Finally, water well by spraying gently.
• Place the pots in a location where the temperature is at least 20°C. A greenhouse is perfectly suited for the germination of this variety.
• Keep the substrate consistently moist, but never waterlogged.
• Germination typically begins 2 to 3 weeks after stratification.

- Type of Earth / Soil:

Coriaria grows well in well-drained soil rich in organic matter. It tolerates different soil types but thrives best in light, loamy, or even sandy soil.

- Exposure / Light:

It prefers full sun. Sunny exposure promotes vigorous growth and better flowering, although it can also tolerate partial shade.

- Temperatures / Hardiness:

Its hardiness is quite interesting; it tolerates moderate temperatures but must be protected from severe frost, as it is sensitive to temperatures below -10°C. In cold climates, it is advisable to grow it in a pot and bring it indoors for the winter.

- Watering / Water Requirements:

It requires regular watering, once a week, to keep the soil slightly moist, especially during the growing season. In winter, reduce watering.

- Multiplication / Reproduction:

Propagation is mainly done by seeds or by cuttings. Cuttings from woody stems in summer are an effective method for propagation.

- Pests / Diseases:

It can be subject to attacks by aphids, scale insects, or spider mites. It may also be vulnerable to certain fungal diseases if moisture conditions are excessive.