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RadishRaphanus sativus

Fast-growing root vegetable with characteristic pungency.

Radish (Raphanus sativus): plant portrait for plant portrait - Vegetables, Mustard family, Harvest Apr, May, Jun, Jul, Aug
Radish: plant portrait. harvest: Apr, May, Jun, Jul, Aug, Sep, Oct, Nov.

Quick profile

Key data

Planting

Mar, Apr

Harvest

Apr, May, Jun, Jul, Aug, Sep, Oct, Nov

Water

high

Good neighbors

LettuceCarrotPea

Avoid

Cabbage

Growing data

Radish Growing data

Seed depth

1 - 2 cm

Plant spacing

10 - 15 cm

Row spacing

25 - 30 cm

Germination temp

8 - 20 °C

Sowing and germination

Seed depth1 - 2 cm
Germination temp8 - 20 °C
Germination time8 - 14 days
Seed viability3 - 5 years
Light germinatorNo
Dark germinatorYes
Cold germinatorNo
Stratification neededNo
Pre-soaking recommendedNo
Direct sowing possibleYes
Pre-culture recommendedNo

Planting and spacing

Plant spacing10 - 15 cm
Row spacing25 - 30 cm
Plants per m²20 - 35 per m²
Bed widthfrom 120 cm
Spacing4-9 per square foot

Temperature and site

Soil temperature8 - 15 °C
Growing temperaturefrom 5 °C
Optimal temperature12 - 20 °C
Frost sensitiveNo
Late frost sensitiveNo
Heat tolerancemedium
Cold tolerancehigh

Water, nutrients and care

Waterhigh
Critical water phasesTuber development, Germination phase
Watering methodoverhead or drip
Droughthigh
Waterlogging sensitiveYes
Mulching recommendedYes
Nutrient needmedium_feeder
Compost recommendedYes
Fertilizer sensitivitymedium

Container, support and growth

Container suitableYes
Pot sizeVolume: from 5 l; Recommended: from 10 l; Diameter: from 20 cm; Depth: from 25 cm
SupportNo
Height20 - 50 cm
Width15 - 30 cm
Root depth15 - 40 cm
Root spread10 - 20 cm
Yield0.1 - 0.5 kg

Year plan

Radish Calendar

All plants
Indoor sowingDirect sowingPlantingHarvest

Indoor sowing

FebMar

Indoor pre-culture usually only for early greenhouse varieties.

Direct sowing

MarAprMayJunJulAugSep

Successive sowing possible; sow winter radishes from July onwards.

Planting

MarApr

Only for pre-grown seedlings for early harvests.

Harvest

AprMayJunJulAugSepOctNov

Harvest depending on sowing time; winter radishes before hard frost.

Year plan
  1. Outdoor sowing
  2. Sow winter radishes

Growing

Radish Site, soil and care

Spacing

10 - 15 cm

Storage

Methods: Refrigerator, Pit storage in sand (winter radish)

Pro tip: Sow radishes in the same row as carrots. The fast-growing radish acts as a row marker and loosens the soil for the slower carrots.

Pruning

Radish Pruning

Pruning timing

growth_phase

AprMayJunJulAugSepOct

Removal of bolters As soon as the plant bolts, tuber quality declines.

Remove

  • Stems in case of premature bolting
  • Dead outer leaves
  • Flower buds during tuber production

Preserve

  • Healthy leaf canopy for photosynthesis
  • Heart leaves

Avoid

  • Damaging the root crown
  • Excessive pruning of the foliage

Tools and hygiene

Not relevant for standard cultivation; use clean shears for seed saving.

Companion guide

Radish Companion guide

Companion guide

Good neighbors

LettuceCarrotPea

Avoid

Cabbage

Health

Pests, Diseases

Pests

Cabbage root fly

Maggot tunnels in the root, stunted growth.

Flea beetles

Sieve-like holes in leaves.

Diseases

Clubroot

Galls on roots, wilting.

Downy mildew

Yellow spots on leaf top, grey coating underneath.

Deficiencies

Boron deficiency

Glassy spots in flesh, heart rot.

Plant health

FAQ

Why is my radish so spicy?

Pungency often results from water stress or harvesting too late. Regular watering mellows the flavor.

What helps against maggots in radishes?

Fine-mesh crop protection nets prevent the cabbage root fly from laying its eggs.

Related plants

Cabbage

Same family

May turnip

Same crop group

kohlrabi

Shared diseases

Both susceptible to clubroot and cabbage root fly.

Spinach

Similar nutrient needs

Lettuce

Similar water needs

Sources

Public sources

  1. Wikidata entity

    Wikidata · 2026-05-15

  2. GBIF species match

    GBIF · 2026-05-15

  3. Deutschsprachige Wikipedia: Garten-Rettich

    Wikipedia · 2026-05-15

  4. English Wikipedia: Radish

    Wikipedia · 2026-05-15

Details

More public plant data

Names
Common

Radish

Plural

Radishes

BotanicalRaphanus sativus
Botanical authorL.
Scientific synonyms
  1. Raphanus raphanistrum subsp. sativus
Synonyms
  1. Garden radish
Common synonyms
  1. Cultivated radish
Regional names
  1. Radi
Historical names
  1. Gartenrettig
Market names
  1. Daikon
  2. Mooli
Misspellings
International names
Fr
  1. Radis
Es
  1. Rábano
It
  1. Ravanello
Pl
  1. Rzodkiew zwyczajna
Ambiguous names
  1. NameRettich
    Languagede
    Shared with
    1. Raphanus
    2. Mycena pura
    Clarification

    Usually refers to the species Raphanus sativus, but can also refer to the entire genus or the Lilac Bonnet mushroom.

Search terms
  1. Radish
  2. Raphanus sativus
Taxonomy
KingdomPlantae
Clades
  1. Tracheophyta
  2. Angiospermae
  3. Eudicotyledonae
  4. Rosidae
  5. Malvidae
OrderBrassicales
Family botanicalBrassicaceae
Family

Mustard family

Family idbrassicaceae
TribeBrassiceae
GenusRaphanus
SpeciesRaphanus sativus
Hybrid statusnot_hybrid
Related crops
  1. Raphanus raphanistrum
  2. Brassica oleracea
  3. Brassica rapa
Classification
Main groupVegetables
Sub groupRoot and tuber vegetables
Crop groupBrassicas
Life cycleAnnual or Biennial
Perennialno
Woodyno
Treeno
Shrubno
Edible parts
  1. Root
  2. Leaves
  3. Seeds
  4. Seed pods
Nutrient groupLow-calorie
Calendar
Sowing indoor
Months
  1. 2
  2. 3
Earliest month2
Latest month3
Notes

Indoor pre-culture usually only for early greenhouse varieties.

Sowing outdoor
Months
  1. 3
  2. 4
  3. 5
  4. 6
  5. 7
  6. 8
  7. 9
Earliest month3
Latest month9
Notes

Successive sowing possible; sow winter radishes from July onwards.

Planting out
Months
  1. 3
  2. 4
Earliest month3
Latest month4
Notes

Only for pre-grown seedlings for early harvests.

Harvest
Months
  1. 4
  2. 5
  3. 6
  4. 7
  5. 8
  6. 9
  7. 10
  8. 11
Earliest month4
Latest month11
Notes

Harvest depending on sowing time; winter radishes before hard frost.

Month tasks
3
  1. First outdoor sowing under fleece

6
  1. Sowing of summer radishes

7
  1. Start sowing winter radishes

10
  1. Main harvest of winter radishes

Month tasks structured
3
  1. Tasksowing
    Label

    Outdoor sowing

    Prioritymedium
    Months
    1. 3
    Notes

    Sow early varieties if soil is workable.

7
  1. Tasksowing
    Label

    Sow winter radishes

    Priorityhigh
    Months
    1. 7
    2. 8
    Notes

    Optimal time for storable autumn and winter radishes.

Book content
Intro text

The garden radish is a kitchen garden classic, prized for its rapid development and variety, ranging from crisp spring radishes to heavy black winter radishes.

Historical context

Already valued in ancient Egypt, the radish spread through antiquity to Europe and is now a staple of Central European culinary traditions.

Structured month tasks
3
  1. Tasksowing
    Label

    Direct sowing in the bed

    Prioritymedium
    Months
    1. 3
    2. 4
    Estimated effortlow
    Notes

    Pay attention to sowing depth so roots don't grow on the surface.

11
  1. Taskharvest
    Label

    Store winter radishes

    Priorityhigh
    Months
    1. 10
    2. 11
    Conditiondry_weather
    Estimated effortmedium
    Notes

    Store in sandboxes in a cool cellar.

Cultivation specs
Seed
Seed depth cm min.1
Seed depth cm max.2
Light germinatorno
Dark germinatoryes
Cold germinatorno
Stratification neededno
Pre soaking recommendedno
Germination temperature c min.8
Germination temperature c max.20
Germination days min.8
Germination days max.14
Seed lifespan years min.3
Seed lifespan years max.5
Direct sowing possibleyes
Pre culture recommendedno
Spacing
Plant spacing cm min.10
Plant spacing cm max.15
Row spacing cm min.25
Row spacing cm max.30
Recommended density per sqm min.20
Recommended density per sqm max.35
Thinning distance12 cm
Min. bed width120 cm
Square foot gardening spacing4-9 per square foot
Spacing notes

Small radishes closer (5cm), large radishes wider (15cm) apart.

Growth dimensions
Height cm min.20
Height cm max.50
Width cm min.15
Width cm max.30
Root depth cm min.15
Root depth cm max.40
Root spread cm min.10
Root spread cm max.20
Growth speedfast
Final size notes

Leaf canopy can become quite large in winter radishes.

Temperature
Min. growing temperature5 °C
Optimal temperature c min.12
Optimal temperature c max.20
Max. heat tolerance28 °C
Soil temperature for sowing c min.8
Soil temperature for sowing c optimal15
Frost sensitiveno
Late frost sensitiveno
Heat tolerancemedium
Cold tolerancehigh
Temperature notes

Too much heat leads to pithiness and bolting.

Water
Water needhigh
Critical water phases
  1. Tuber development
  2. Germination phase
Drought tolerantno
Drought sensitivityhigh
Waterlogging sensitiveyes
Mulching recommendedyes
Water notes

Consistent moisture prevents the roots from splitting.

Nutrition
Nutrient groupmedium_feeder
Heavy feederno
Medium feederyes
Light feederno
Nitrogen needmedium
Phosphorus needmedium
Potassium needhigh
Calcium needmedium
Magnesium needlow
Compost recommendedyes
Mulching recommendedyes
Fertilizer sensitivitymedium
Nutrition notes

Do not use fresh manure (attracts cabbage root fly).

Container
Container suitableyes
Min. pot volume5 l
Recommended pot volume10 l
Min. pot depth25 cm
Min. pot diameter20 cm
Plants per container min.1
Plants per container max.3
Drainage requiredyes
Repotting neededno
Container notes

Choose deep containers for long radish varieties.

Support
Needs supportno
Support recommendedno
Climbingno
Viningno
Trellis recommendedno
Training requiredno
Support notes
Cultivation modes
Outdoor bed suitableyes
Raised bed suitableyes
Container suitableyes
Balcony suitableyes
Greenhouse suitableyes
Polytunnel suitableyes
Indoor suitableno
Windowsill suitableyes
Hydroponic possibleyes
Permaculture suitableyes
No dig suitableyes
Yield density
Yield per plant min.0.1
Yield per plant max.0.5
Yield unitkg
Yield per sqm min.2.5
Yield per sqm max.5
Yield reliabilityhigh
Yield notes

Varies greatly between small radishes and heavy winter varieties.

Site
Exposure

Sunny to partial shade

Protection

Airy location to avoid pest infestation

Soil
Type

Medium-heavy, deep sandy-loam soil

PH range6.0 - 7.0
Preparation

Loosen deeply, remove stones

Watering
Frequency

Regular, daily during dry spells

Method

Watering at soil level preferred

Nutrition
Fertilization strategy

Basal dressing with ripe compost before sowing

Micronutrients

Watch for boron needs in deficient soils

Cultivation planning
Succession sowing
Possibleyes
Interval days min.14
Interval days max.21
Bed planning notes

Maintain a 3-4 year crop rotation break from other brassicas.

Rotation priorityhigh
Interplanting potentialExcellent as catch crop or between slow-growing vegetables like carrots or lettuce.
Mechanization relevanceHigh for commercial root harvesting; low for home gardens.
Crop rotation
Rotation break years3
Preceding crops
  1. Peas
  2. Beans
  3. Lettuce
  4. Tomatoes
Following crops
  1. Zucchini
  2. Spinach
  3. Swiss chard
Notes

Do not grow after other brassicas to avoid clubroot.

Deficiencies
  1. Slugbor-mangel
    Name

    Boron deficiency

    Symptoms

    Glassy spots in flesh, heart rot.

Problems
  1. Slugpelzigkeit
    Name

    Pithiness

    Description

    Spongy internal tissue caused by heat or over-ripeness.

  2. Slugplatzen
    Name

    Root splitting

    Description

    Tuber cracking due to uneven water supply.

Problem management
Common pest groups
  1. Biting insects
  2. Soil-borne maggots
Common disease groups
  1. Fungal diseases
  2. Rot pathogens
Prevention principles
  1. Use crop protection nets
  2. Consistent watering
  3. No fresh organic manure shortly before sowing
Diagnosis notes

In case of wilting, always check the roots first for feeding marks or galls.

Disease graph
Scopelocal_garden
Profiles
  1. Slugperonospora-parasitica
    Severitymedium
    Conditions
    1. Humid weather
    2. Cool nights
    Affected parts
    1. Leaves
    Prevention
    1. Wide plant spacing
    2. Airy location
    Organic control
    1. Spray horsetail extract
Diagnostic rules
  1. Symptom

    Leaves have small holes

    Possible causes
    1. erdfloh
    First checks
    1. Check soil moisture
    2. Search undersides of leaves
Prevention strategy
Cultural
  1. Follow crop rotation
  2. Sow early
Monitoring
  1. Yellow traps to monitor cabbage fly flight
Organic first response
  1. Dusting with rock dust against flea beetles
Notes

Nets must be sealed tightly against the ground.

Diagnosis
Phenology
Stages
  1. Germination
  2. Leaf development
  3. Tuber formation
  4. Bolting (Flowering)
  5. Seed maturation
Notes

Radishes grow very quickly; heat can trigger bolting before the tuber is mature.

Flowering pollination
Flowering period

May to September (only for seed carriers)

Flower color

White or violet

Harvest
Harvest window

April to November

Best time of

Morning for maximum crispness

Harvest details
Harvest frequency

Single harvest per plant.

Harvest indicators
  1. Reaching variety-specific size
  2. Tuber protrudes slightly from the soil
  3. Firmness when pressed with fingers
Post harvest handling

Remove leaves immediately to stop moisture loss from the tuber.

Storage
Methods
  1. Refrigerator
  2. Pit storage in sand (winter radish)
Storage details
General storage category

Short to medium-term storable

Storage life

Small radishes 3-5 days; winter radishes in sand up to 6 months.

Processing options
  1. Fresh consumption
  2. Pickling
  3. Fermentation
Processing use
Industrial relevance

Low; mainly fresh market.

Kitchen usage
Preparation methods
  1. Sliced raw
  2. Salted
  3. In salads
  4. Briefly steamed
Flavor profile

Pungent to mild, spicy due to mustard oils.

Safety and edibility
Edible parts
  1. Root tuber
  2. Young leaves
  3. Seed pods
  4. Flowers
Inedible or caution parts
  1. Old, woody leaves
Toxicity notes

Non-toxic. High consumption can cause stomach irritation in sensitive individuals.

Raw consumption

Primary way of eating; pungency can be reduced by salting.

Seed saving
Difficulty

Medium

Isolation distance meters500
Seed saving advanced
Selection criteria
  1. Bolting resistance
  2. Shape consistency
  3. Smooth skin
Crossing risks

Crosses easily with wild radish or other radish varieties.

Woody crop details
Notes

Radish is a herbaceous plant; woody structures only occur during over-ripeness or bolting and are undesirable.

Ecology
Pollinator valuemedium
Wildlife valuelow
Biodiversity notes

When allowed to flower, radishes provide nectar for hoverflies and bees. As a brassica, it is also a food plant for Small White butterfly caterpillars.

Practical notes
Pro tip

Sow radishes in the same row as carrots. The fast-growing radish acts as a row marker and loosens the soil for the slower carrots.

Seasonal content
Spring

Focus on small radishes and early radish varieties.

Autumn

Main harvest time for storable winter radishes.