Profile
RadishRaphanus sativus
Fast-growing root vegetable with characteristic pungency.

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
Planting and spacing
Temperature and site
Water, nutrients and care
Container, support and growth
Year plan
Radish Calendar
Indoor sowing
Indoor pre-culture usually only for early greenhouse varieties.
Direct sowing
Successive sowing possible; sow winter radishes from July onwards.
Planting
Only for pre-grown seedlings for early harvests.
Harvest
Harvest depending on sowing time; winter radishes before hard frost.
Year plan
- Outdoor sowing
- 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
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
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
Internal links
Related plants
Sources
Public sources
- Wikidata entity
Wikidata · 2026-05-15
- GBIF species match
GBIF · 2026-05-15
- Deutschsprachige Wikipedia: Garten-Rettich
Wikipedia · 2026-05-15
- English Wikipedia: Radish
Wikipedia · 2026-05-15
Details
More public plant data
Names
Common
Radish
Plural
Radishes
Scientific synonyms
- Raphanus raphanistrum subsp. sativus
Synonyms
- Garden radish
Common synonyms
- Cultivated radish
Regional names
- Radi
Historical names
- Gartenrettig
Market names
- Daikon
- Mooli
Misspellings
International names
Fr
- Radis
Es
- Rábano
It
- Ravanello
Pl
- Rzodkiew zwyczajna
Ambiguous names
- NameRettichLanguagede
Shared with
- Raphanus
- 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
- Radish
- Raphanus sativus
Taxonomy
Clades
- Tracheophyta
- Angiospermae
- Eudicotyledonae
- Rosidae
- Malvidae
Family
Mustard family
Related crops
- Raphanus raphanistrum
- Brassica oleracea
- Brassica rapa
Classification
Edible parts
- Root
- Leaves
- Seeds
- Seed pods
Calendar
Sowing indoor
Months
- 2
- 3
Notes
Indoor pre-culture usually only for early greenhouse varieties.
Sowing outdoor
Months
- 3
- 4
- 5
- 6
- 7
- 8
- 9
Notes
Successive sowing possible; sow winter radishes from July onwards.
Planting out
Months
- 3
- 4
Notes
Only for pre-grown seedlings for early harvests.
Harvest
Months
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
Notes
Harvest depending on sowing time; winter radishes before hard frost.
Month tasks
3
First outdoor sowing under fleece
6
Sowing of summer radishes
7
Start sowing winter radishes
10
Main harvest of winter radishes
Month tasks structured
3
- Tasksowing
Label
Outdoor sowing
PrioritymediumMonths
- 3
Notes
Sow early varieties if soil is workable.
7
- Tasksowing
Label
Sow winter radishes
PriorityhighMonths
- 7
- 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
- Tasksowing
Label
Direct sowing in the bed
PrioritymediumMonths
- 3
- 4
Estimated effortlowNotes
Pay attention to sowing depth so roots don't grow on the surface.
11
- Taskharvest
Label
Store winter radishes
PriorityhighMonths
- 10
- 11
Conditiondry_weatherEstimated effortmediumNotes
Store in sandboxes in a cool cellar.
Cultivation specs
Seed
Spacing
Spacing notes
Small radishes closer (5cm), large radishes wider (15cm) apart.
Growth dimensions
Final size notes
Leaf canopy can become quite large in winter radishes.
Temperature
Temperature notes
Too much heat leads to pithiness and bolting.
Water
Critical water phases
- Tuber development
- Germination phase
Water notes
Consistent moisture prevents the roots from splitting.
Nutrition
Nutrition notes
Do not use fresh manure (attracts cabbage root fly).
Container
Container notes
Choose deep containers for long radish varieties.
Support
Support notes
Cultivation modes
Yield density
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
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
Bed planning notes
Maintain a 3-4 year crop rotation break from other brassicas.
Crop rotation
Preceding crops
- Peas
- Beans
- Lettuce
- Tomatoes
Following crops
- Zucchini
- Spinach
- Swiss chard
Notes
Do not grow after other brassicas to avoid clubroot.
Deficiencies
- Slugbor-mangel
Name
Boron deficiency
Symptoms
Glassy spots in flesh, heart rot.
Problems
- Slugpelzigkeit
Name
Pithiness
Description
Spongy internal tissue caused by heat or over-ripeness.
- Slugplatzen
Name
Root splitting
Description
Tuber cracking due to uneven water supply.
Problem management
Common pest groups
- Biting insects
- Soil-borne maggots
Common disease groups
- Fungal diseases
- Rot pathogens
Prevention principles
- Use crop protection nets
- Consistent watering
- 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
Profiles
- Slugperonospora-parasiticaSeveritymedium
Conditions
- Humid weather
- Cool nights
Affected parts
- Leaves
Prevention
- Wide plant spacing
- Airy location
Organic control
- Spray horsetail extract
Diagnostic rules
Symptom
Leaves have small holes
Possible causes
- erdfloh
First checks
- Check soil moisture
- Search undersides of leaves
Prevention strategy
Cultural
- Follow crop rotation
- Sow early
Monitoring
- Yellow traps to monitor cabbage fly flight
Organic first response
- Dusting with rock dust against flea beetles
Notes
Nets must be sealed tightly against the ground.
Diagnosis
Phenology
Stages
- Germination
- Leaf development
- Tuber formation
- Bolting (Flowering)
- 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
- Reaching variety-specific size
- Tuber protrudes slightly from the soil
- Firmness when pressed with fingers
Post harvest handling
Remove leaves immediately to stop moisture loss from the tuber.
Storage
Methods
- Refrigerator
- 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
- Fresh consumption
- Pickling
- Fermentation
Processing use
Industrial relevance
Low; mainly fresh market.
Kitchen usage
Preparation methods
- Sliced raw
- Salted
- In salads
- Briefly steamed
Flavor profile
Pungent to mild, spicy due to mustard oils.
Safety and edibility
Edible parts
- Root tuber
- Young leaves
- Seed pods
- Flowers
Inedible or caution parts
- 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
Seed saving advanced
Selection criteria
- Bolting resistance
- Shape consistency
- 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
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.



