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Botanical Name : Raphanus sativus
Family: Brassicaceae– Mustard family
Genus: Raphanus L.– radish
Species: Raphanus sativus L.– cultivated radish
Subkingdom: Tracheobionta– Vascular plants
Superdivision: Spermatophyta– Seed plants
Division: Magnoliophyta– Flowering plants
Class: Magnoliopsida– Dicotyledons
Synonyms: Raphanus raphanistrum sativus – (L.) G. Beck.
Common Name :Radish
Habitat :The origin of Raphanus sativus is not found, it is a plant of cultivation. It probably arose through cultivation.
Raphanus sativus is an annual herb growing to 0.45m by 0.2m at a fast rate.
It is hardy to zone 0 and is not frost tender. It is in flower from June to August, and the seeds ripen from July to September. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees, flies.
The plant prefers light (sandy), medium (loamy) and heavy (clay) soils. The plant prefers neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It requires moist soil.
Very easily cultivated fast-growing plants which prefer a rich light soil with ample moisture. They dislike very heavy or acid soils. Plants are susceptible to drought and require irrigation during dry spells in the summer or the root quality will rapidly deteriorate and the plant will go to seed. Radishes are widely cultivated for their edible roots. There are many named variet that are able to supply edible roots all year round. Over the centuries a number of distinct groups have evolved through cultivation, these have been classified by the botanists as follows. A separate entry has been made for each group:- R. sativus. The common radish. Fast maturing plants with small roots that can be round or cylindrical and usually have red skins. They are grown primarily for their roots which in some varieties can be ready within three weeks from sowing the seed and are used mainly in salads. These are mainly grown for spring, summer and autumn use and can produce a crop within a few weeks of sowing. R. sativus caudatus. The rat-tailed radishes. This group does not produce roots of good quality, it is cultivated mainly for the edible young seedpods which are harvested in the summer. R. sativus niger. The Oriental and Spanish radishes. These are grown for their larger edible root which can be round or cylindrical and can be available throughout the winter. R. sativus oleiformis. The fodder radishes. These are grown mainly for their leaves and oil-rich seeds, they are used as a green manure or stock feed though they can also be eaten by people. The roots of these plants soon become fibrous, though they make acceptable eating when young. Radishes are a good companion plant for lettuces, nasturtiums, peas and chervil, tomatoes and cucumbers. They are said to repel cucumber beetles if planted near cucumber plants and they also repel the vine borers which attack squashes, marrows and courgettes. They grow badly with hyssop and with grape vines.
Seed – sow outdoors in situ in succession from late winter to the middle of summer. Germination takes place within a few days of sowing the seed. If you want a constant supply of the roots then you need to sow seed every 2 – 3 weeks
Edible Parts: Flowers; Leaves; Root; Seed; Seedpod.
Edible Uses: Oil.
Young leaves – raw or cooked. A somewhat hot taste, and the texture is somewhat coarse. As long as they are young, they make an acceptable addition in small quantities to chopped salads and are a reasonable cooked green[K]. A nutritional analysis is available. Young flower clusters – raw or cooked. A spicy flavour with a crisp pleasant texture, they make a nice addition to salads or can be used as a broccoli substitute. Seeds – raw. The seed can be soaked for 12 hours in warm water and then allowed to sprout for about 6 days. They have a hot spicy flavour and go well in salads. Young seedpods – raw. Crisp and juicy with a mildly hot flavour. They must be eaten when young because they quickly become tough and fibrous. Root – raw or cooked. Crisp and juicy, they have a hot and spicy flavour and are a very popular addition to salads. The summer crops do not store well and should be used as soon as possible after harvesting. The winter varieties (including the Japanese forms) have much larger roots and often a milder flavour. These store well and can be either harvested in early winter for storage or be harvested as required through the winter. An edible oil is obtained from the seed.
Figures in grams (g) or miligrams (mg) per 100g of food.
Leaves (Dry weight) : 287 Calories per 100g
*Protein: 28.7g; Fat: 5.2g; Carbohydrate: 49.6g; Fibre: 9.6g; Ash: 16.5g;
*Minerals – Calcium: 1913mg; Phosphorus: 261mg; Iron: 35.7mg; Magnesium: 0mg; Sodium: 956mg; Potassium: 4348mg; Zinc: 0mg;
*Vitamins – A: 21mg; Thiamine (B1): 0.7mg; Riboflavin (B2): 2.43mg; Niacin: 34.8mg; B6: 0mg; C: 704mg;
Notes: Vitamin A is mg not IU
Anthelmintic; Antibacterial; Antifungal; Antiscorbutic; Antispasmodic; Astringent; Cancer; Carminative; Cholagogue; Digestive; Diuretic; Expectorant; Laxative; Poultice; Stomachic.
Radishes have long been grown as a food crop, but they also have various medicinal actions. The roots stimulate the appetite and digestion, having a tonic and laxative effect upon the intestines and indirectly stimulating the flow of bile. Consuming radish generally results in improved digestion, but some people are sensitive to its acridity and robust action. The plant is used in the treatment of intestinal parasites, though the part of the plant used is not specified. The leaves, seeds and old roots are used in the treatment of asthma and other chest complaints. The juice of the fresh leaves is diuretic and laxative. The seed is carminative, diuretic, expectorant, laxative and stomachic. It is taken internally in the treatment of indigestion, abdominal bloating, wind, acid regurgitation, diarrhoea and bronchitis. The root is antiscorbutic, antispasmodic, astringent, cholagogue, digestive and diuretic. It is crushed and used as a poultice for burns, bruises and smelly feet. Radishes are also an excellent food remedy for stone, gravel and scorbutic conditions. The root is best harvested before the plant flowers. Its use is not recommended if the stomach or intestines are inflamed. The plant contains raphanin, which is antibacterial and antifungal. It inhibits the growth of Staphylococcus aureus, E. coli, streptococci, Pneumococci etc. The plant also shows anti-tumour activity.
Radish root stimulates the appetite and digestion. The common red radish is eaten as a salad vegetable and an appetizer. The juice of the black radish is drunk to counter gassy indigestion and constipation. Radish juice has a tonic and laxative action on the intestines and indirectly stimulates the flow of bile. Consuming radish generally results in improved digestion, but some people are sensitive to its acridity and robust action. It is crushed and used as a poultice for burns, bruises and smelly feet. The leaves, seeds and old roots are used in the treatment of asthma and other chest complaints. The juice of the fresh leaves is diuretic and laxative. In China, radish is eaten to relive abdominal distension. The root is also prepared “dry-fried” to treat chest problems. The seed is used to treat abdominal fullness, sour eructations, diarrhea caused by food congestion, phlegm with productive cough and wheezing. Because of its neutral energy, it is very effective in breaking up congestion in patients with extreme heat. Radishes are also an excellent food remedy for stone, gravel and scorbutic conditions. The plant contains raphanin, which is antibacterial and antifungal. It inhibits the growth of Staphylococcuc aureus, E. coli, streptococci, pneumococci etc. The plant also shows anti-tumor activity.
Green manure; Oil; Repellent.
The growing plant repels beetles from tomatoes and cucumbers. It is also useful for repelling various other insect pests such as carrot root fly. There is a fodder variety that grows more vigorously and is used as a green manure.
Known Hazards: The Japanese radishes have higher concentrations of glucosinolate, a substance that acts against the thyroid gland. It is probably best to remove the skin.
Disclaimer : The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplement, it is always advisable to consult with your own health care provider