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À propos watermelon radish

White with a fuchsia center, crisp and slightly spicy, the watermelon radish can be eaten fresh or cooked. Harvested in the fall at 6 to 8 cm in diameter. Keeps well.

Growing tips for watermelon radish

Family
Brassicaceae (Raphanus sativus)
Number of seeds
± 200
Growing cycle
Annual
Suggested sowing
Outside
Suggested time*
May and August
Ideal germination temperature
From 7 to 35℃
Germination time
3 to 7 days
Sowing depth
Three times the size of the seed.
Seed storage
In a dry place away from light.
Seed shelf life
5 years minimum
Exposure
Sun
Days to maturity*
60 days
Distance between plants
10-15 cm
Distance between rows
40 cm
*The suggested time concerns zone 4b. For zone 5 you can start 2 weeks earlier and in zone 3 delay by 2 weeks. The number of days indicated is calculated from planting in the garden. Click here to get your hardiness zone or create your gardening calendar with our Quebec partner, lamainverte.ca.

Articles de jardinage en lien avec watermelon radish

Advice from the seed producer and author

Yves Gagnon

Growing conditions for radishes

Radishes reach their best quality in cool weather. They are frost-resistant. Warm, dry conditions induce flowering and contribute to the development of a pungent flavor and fibrous texture. They are therefore best grown in spring or autumn. Some cultivars are adapted to a particular season. Since the small common radish appreciates an increasing photoperiod, it is mainly grown in spring. Black and Oriental radishes respond better to autumn conditions. All radishes prefer cool, loose soils rich in organic matter. To achieve maximum quality, they must be provided with consistent moisture. They tolerate overhead irrigation as long as it is not in broad daylight. The soil for their cultivation is amended with 500 kg of mature compost per 100 m2. The soil must be well supplied with boron, manganese, and copper. A pH between 5.5 and 6.8 is suitable for them.

Radish Crop Rotation

Radishes are often grown in the second year of rotation with plants that require mature compost. Because of their very short growing time, they can also be grown alongside frugal plants at the end of the rotation. Fertilization will then need to be adjusted.

Companion planting of radishes

Radishes can be grown alongside leafy vegetables that require mature compost, as well as carrots, beets, parsnips, and swedes. However, as the species is vulnerable to cabbage maggots, it is often grown under agrotextile in spring alongside turnips and early cabbages, and in autumn alongside Chinese cabbages, which should also be protected from the pest with a floating tarpaulin.

— These valuable tips were written by Yves Gagnon, in the book The ecological cultivation of vegetable plants , Colloidal Editions.

You can add the book Ecological Vegetable Cultivation by Yves Gagnon to your order for further advice on growing radishes.