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18-Day Organic Radish - Ferme de Sainte Marthe seeds

Raphanus sativus de 18 jours
Radish, Garden Radish

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The scorching summer has greatly accelerated the seed production, resulting in a meager harvest. It's worth considering another variety that is more drought-resistant.

Nathalie F., 13/11/2020

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This plant carries a 6 months recovery warranty

More information

A fast-growing classic variety. This annual salad plant is cultivated for its fleshy and crunchy roots, which are pink and white. Its flavour is pleasant and slightly spicy. It is consumed raw in salads. Sow the seeds from March to October for a harvest 1 month later.
Ease of cultivation
Beginner
Height at maturity
15 cm
Spread at maturity
15 cm
Soil moisture
Damp soil
Germination time (days)
5 days
Sowing method
Direct sowing, Sowing under cover
Sowing period March to October
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Harvest time April to November
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Description

The 18-day Radish is a classic fast-growing variety. This annual salad plant is cultivated for its fleshy and crunchy roots, which are pink and white. Its flavour is pleasant and slightly spicy. It is consumed raw in salads. The sowing period is from March to October for a harvest 1 month later.

 

The radish is a fairly hardy annual or biennial vegetable plant, belonging to the Brassicaceae family. It is mainly grown for its root, which is eaten raw in salads. However, its freshly picked leaves can be used in soups or stews.

Probably known since the Neolithic period, the radish is believed to originate from the Far East. The name "radish" comes from the Latin word "radix", which simply means a root. It was widely consumed by the ancient Egyptians, Romans, and in the Middle Ages, in forms probably different from what we know today. The red and white radishes arrived in the 18th century.

There are radishes of different colours, red being the most common. They are also pink, white, or grey. They are generally classified into 2 main types: monthly radishes, represented by small-rooted varieties, and radish turnips, represented by long-rooted varieties. There are also Japanese radishes, or "daikon", which have a long, white, conical root, sometimes sold as turnips.

Winter radishes have a large taproot with black, pink, or purple skin. The flesh is white. The leaves are green and deeply cut, forming a compact tuft at the base of the plant. Its taste is much stronger than that of monthly radishes. It can be enjoyed cooked, like turnips, or raw, like carrots.

Winter radishes have many virtues, containing vitamin C and sulphur, as well as phosphorus and magnesium. They are anti-scorbutic and diuretic, and are recommended for people with liver and gallbladder problems.

Harvesting and Storage

The harvest of monthly and summer radishes takes place 4 to 6 weeks after sowing. Regular harvests as soon as the radishes are formed, without letting them grow too large, help prevent them from becoming hollow and indigestible. Monthly or summer radishes should be consumed quickly. The freshly harvested leaves can be cooked into a delicious soup.

The harvest of radish turnips takes place 4 to 5 months after sowing. Harvest by gently lifting with a garden fork and let them dry on the ground before bringing them in. If they stay in the ground during winter, cover the soil with straw.

Gardener's Tips

Sowing radishes and carrots on the same row and at the same time naturally spaces the carrot seeds out. Once harvested, the radishes will leave room for the carrots to grow. 

Spread out the sowings for a staggered harvest. Sow every 2 to 3 weeks to ensure a steady supply through the season.

You can also sow radishes in planters, with potting soil and regular watering.

Harvest

Harvest time April to November
Type of vegetable Root vegetable
Vegetable colour red
Size of vegetable Small
Interest Flavour, Nutritional value, Productive
Use Cooking

Plant habit

Height at maturity 15 cm
Spread at maturity 15 cm
Growth rate normal

Foliage

Foliage persistence Deciduous
Foliage colour green
Aromatic? Fragrant foliage when creased

Botanical data

Genus

Raphanus

Species

sativus

Cultivar

de 18 jours

Family

Brassicaceae

Other common names

Radish, Garden Radish

Origin

Cultivar or hybrid

Annual / Perennial

Annual

Product reference38691

Planting and care

Sowing

Sowing radishes every month is easy. Sow the seeds thinly, directly in place, in loosened soil. Sow in rows or broadcast. For round radish seeds, barely cover them with soil. For half-long radishes, cover the seeds with 2cm (1in) of fine compost or soil. Lightly press down with the back of a rake and water with a fine spray. Keep sufficiently moist until germination.

Radishes can be sown all year round, with a preference for late winter to early summer. Avoid periods of extreme heat. You can sow again in late summer to early autumn, when the soil is still warm, before the first frosts.

Radishes like clear and sunny locations, and appreciate light shade in the middle of summer. Watering should be infrequent but regular.

Force-grown radish sowing

Broadcast from February. Protect under a cold frame or a tunnel until the risk of frost has passed.

Sowing radishes every month and summer radishes

From May onwards, you can sow as you please and continue until the end of summer, or even early autumn if the climate permits, in open ground. Sow in rows spaced 10 to 20cm (4 to 8in) apart.

Winter radish sowing

Sow from June to November, depending on the climate, in open ground. Sow in rows spaced 20 to 30cm (8 to 12in) apart.

Maintenance

Thinning is necessary once the seedlings have emerged. Remove the weaker plants to leave only the strongest ones, spacing them every 4 to 5cm (2in) for monthly radishes, and 10 to 15cm (4 to 6in) for radishes with a swollen root.

The soil should be kept relatively moist through regular watering. Hoeing, weeding, and mulching combined with watering will help limit the production of pungent radishes. Additionally, preserving moisture will prevent flea beetle invasions, which thrive in hot and dry weather.

 

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Seedlings

Sowing period March to October
Sowing method Direct sowing, Sowing under cover
Germination time (days) 5 days

Care

Soil moisture Wet
Disease resistance Good
Pruning No pruning necessary

Intended location

Type of use Vegetable garden
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Beginner
Soil Light.
Exposure Sun, Partial shade
Soil pH Any
Soil type Chalky (poor, alkaline and well-drained), Silty-loamy (rich and light), Stony (poor and well-drained), 192
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