Winter Radish Round Black Winter [Raphanus sativus var. niger]

The Radish 'Round Black Winter' is a very old, traditional and annual medicinal and vegetable plant variety from the 18th century. Century. The almost forgotten autumn and winter radish develops round, beet-shaped and dark brown to black roots, covered with scab-like skin. The roots weigh 300 to 500g and form a firm and pure white flesh. The robust plants grow with green upright pinnate and bristly hairy leaves. The hardy variety has a fresh-spicy to pungent taste and is excellent for raw consumption. The roots are storable for a long time and are also used to make cough syrup due to their immune system strengthening properties.

General information
Plant family: Brassicaceae
Life Cycle: Annual
Days to harvest: 80 days
Plant height approx.: 40 cm
Root Type: Deep Root
Nutrient requirements: Strong Eaters
Water Requirements: Means
Winter hardiness: Up to-10 °C
Location: Sunny to partially shaded
Floor: Permeable, moist, loamy, humus

PH: 5.5 to 7

Sowing and planting information
Germ Type: Dark germ
Seed Depth: 1 cm
Optimal germination temperature: 12-15 °C
Germination time: 4-10 days
Planting, row spacing: 10x30 cm

Optimal mixed culture: Bean, pea, lettuce, nasturtium, chard, parsley, spinach, carrot, leek, tomato, black salsify
Unfavorable mixed culture: Cucumber, cabbage, radish, arugula, mustard, zucchini, corn, potato

Subtropic climate (Mediterranean) (e. g. B. Portugal, Spain, Italy)
Sow directly into the open from January to May and in autumn from September to December.

Moderate climate (e. g. B. Germany, Switzerland, Poland)
Sow directly into the frost-free open air from July to August.

General
Due to the simple and uncomplicated germination, no-till seeds in rows are recommended. Sow the seeds no deeper than 1 cm so that the root can develop. The sowing can be done tightly, by later singling the small and densely growing young radishes can be harvested early in order to give others the space they need to grow.
Radish prefers a sunny location with a nutrient-rich and humus-rich clay soil. Prepare the soil with deposited animal manure. Avoid waterlogging.

Additional tips
Occasional loosening of the soil leads to good growth results. Regular water giving causes faster growth. The nature of the soil determines the degree of sharpness of the tubers. Pot culture possible. In order to quickly obtain a fine, crumbly and well-drained soil, an additional incorporation of biochar and primeval rock flour is recommended.

Type of propagation
Spread occurs via seeds.

Care Plants
M It animal manure prepared beds and planting in mixed culture, replaces additional fertilization.

Germination ability of seeds: 3-4 years

Other Names
Botanical names: Raphanus sativus var. niger
English names: Radish, Black Spanish radish
German names: Rettich, Winter-Rettich, Langer schwarzer Pariser Rettich, Erfurter Rettich, Schwarzer Spanischer Rettich
Portuguese names: Rábano, Raiz-forte
Spanish names: Rábano picante
Französische names: Radis noir long d’été, Radis noir rond d’hiver, Radis noir long d’hiver, Raifort