Plant Profile

RadishRaphanus sativus

Fast-growing root vegetable with characteristic pungency.

Radish (Raphanus sativus): plant portrait - Root vegetables, Mustard family, Harvest April - November
Radish: plant portrait. harvest: April - November.

Quick profile

Key data

Growing calendar
JanFebMarAprMayJunJulAugSepOctNovDec
Indoor sowing
Direct sowing outdoors
Planting outdoors
Harvest
Pruning
Indoor sowingDirect sowing outdoorsPlanting outdoorsHarvestPruning

Good neighbors

LettuceCarrotPea

Avoid

Cabbage

Indoor & direct sowing

Radish: Sowing and germination

Indoor sowing

Indoor pre-culture usually only for early greenhouse varieties.

Direct sowing outdoors

Successive sowing possible; sow winter radishes from July onwards.

Seed depth1 - 2 cm
Germination temp8 - 20 °C
Germination time8 - 14 days
Light germinatorNo
Dark germinatorYes
Cold germinatorNo
Stratification neededNo
Pre-soaking recommendedNo

Planting & site

Radish: Planting and spacing

Planting outdoors

Only for pre-grown seedlings for early harvests.

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

Site & 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.

Temperature & frost

Radish: Temperature and site

Growing temperaturefrom 5 °C
Optimal temperature12 - 20 °C
Max. heatup to 28 °C
Soil temperature8 - 15 °C
Frost sensitiveNo
Late frost sensitiveNo
Heat tolerancemedium
Cold tolerancehigh

Water & nutrients

Radish: Water, nutrients and care

Waterhigh
Critical water phasesTuber development, Germination phase
Watering methodOverhead watering or drip irrigation
Droughthigh
Waterlogging sensitiveYes
Mulching recommendedYes
Nutrient needmedium feeder
Compost recommendedYes
Fertilizer sensitivitymedium

Container & growth

Radish: 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

Plants
Year overview
JanFebMarAprMayJunJulAugSepOctNovDec
Indoor sowing
Direct sowing outdoors
Planting outdoors
Harvest
Pruning

Recurring tasks

Removal of boltersApril - October
As soon as the plant bolts, tuber quality declines.
Sow winter radishesJuly - August
Optimal time for storable autumn and winter radishes.

Relevant now

June

  • No additional single task

Next up

July

  • No additional single task

Monthly tasks

Single tasks from monthly data; repeated seasonal windows are shown in the overview above.

Direct sowing

January

Quiet month

February

No additional single task

March

Direct sowing

Direct sowing

  • Direct sowingSow early varieties if soil is workable.

April

No additional single task

May

No additional single task

June

No additional single task

July

No additional single task

August

No additional single task

September

No additional single task

October

No additional single task

November

No additional single task

December

Quiet month

Flowering & pollination

Radish Flowering & pollination

Flowering period

May to September (only for seed carriers)

Flower color

White or violet

Self-fertility

self-incompatible

Pollinator needed

yes

Overview

Cross-pollination by insects (bees, hoverflies).

Notes

Insect visits are mandatory for seed setting.

Pruning & care

Radish Pruning & care

Pruning timing

Growth phase

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

Remove

Preserve

Avoid

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

Use & storage

Radish Use & storage

Harvest

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

Storage

Short to medium-term storable

Storage life

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

Flavor

Pungent to mild, spicy due to mustard oils.

Harvest

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

Processing

After harvest

Remove leaves immediately to stop moisture loss from the tuber.

Edibility & safety

Radish Edibility & safety

For people

In brief: which parts are edible, which parts remain risky, and whether raw consumption makes sense.

Edible parts:Root tuber, Young leaves, Seed pods, Flowers
Caution parts:Old, woody leaves
Raw consumption:Primary way of eating; pungency can be reduced by salting.

Safety notes

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

Animal safety

For many animals, this plant is generally low-risk: 14 animal types are rated suitable or mostly suitable. Quantity, plant part, and individual tolerance still matter.

Animal safety by plant part

Each row shows which parts are more suitable and which parts are critical.

Companion animals

Dog icon for animal safety ratingDog

Root tuber, Young leaves

Old, woody leaves

Risk factors

Excessive consumption

Symptoms

Gastrointestinal upset with overconsumption

usually no action needed

Garden radish is safe for dogs in normal amounts. The root tuber, young leaves, seed pods, and flowers can be given as occasional treats. Overconsumption may cause stomach irritation. Old, woody leaves should be avoided as they are difficult to digest.

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Cat icon for animal safety ratingCat

Root tuber

Leaves, Seed pods, Flowers

Risk factors

Consumption of large amounts, Sensitivity to pungent compounds

Symptoms

Gastrointestinal upset, Vomiting, Diarrhea

observe

The root tuber of radish is safe for cats in small amounts, while leaves, seeds, and flowers may cause gastrointestinal irritation due to glucosinolates. If large amounts are consumed or symptoms occur, consult a veterinarian.

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Rabbit icon for animal safety ratingRabbit

Root tuber, Young leaves

Seeds, Old, woody leaves

Risk factors

High glucosinolate content in seeds, Woody foliage in mature plants

Symptoms

Gastrointestinal irritation, Gas, Diarrhea with overconsumption

observe

Garden radish is safe for rabbits in small amounts, with the root tuber, young leaves, and flowers being suitable for feeding. Seeds and old, woody leaves should be avoided due to higher glucosinolate concentrations. Overconsumption may cause gastrointestinal discomfort. Introduction should be gradual and in moderation.

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Guinea pig icon for animal safety ratingGuinea pig

Root tuber, Young leaves

Seeds, Old, woody leaves

Risk factors

Overconsumption, Sensitive gastrointestinal tract, Feeding seeds or old leaves

Symptoms

Gastrointestinal upset, Bloating, Diarrhea

observe

Garden radish is suitable for guinea pigs in small amounts as an occasional treat. The root tuber, young leaves, and flowers are safe and provide vitamin C and fiber. Seeds and old, woody leaves contain higher concentrations of glucosinolates and may cause gastrointestinal irritation if overfed. Introduce gradually. Consult a veterinarian if symptoms persist.

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Hamster icon for animal safety ratingHamster

Root tuber, Young leaves

Seed pods, Old, woody leaves

Risk factors

Overconsumption, Sensitivity to pungent compounds, Feeding of seeds or old leaves

Symptoms

Gastrointestinal upset, Bloating, Diarrhea

observe

Garden radish is suitable for hamsters in small amounts as a treat. The root tuber, young leaves, and flowers are generally safe, while seeds and old leaves should be avoided due to higher glucosinolate concentrations. Overconsumption may cause stomach irritation. Not suitable as a main feed. Observation recommended if symptoms occur. Consult a veterinarian if symptoms persist.

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Budgie icon for animal safety ratingBudgie

Root tuber, Young leaves

Seed pods, Old, woody leaves

Risk factors

Excessive consumption, Sensitivity to pungent compounds

Symptoms

Gastrointestinal upset, Diarrhea, Vomiting

observe

Garden radish is suitable for budgies in small amounts as an occasional treat. The root tuber, young leaves, and flowers can be fed, but seed pods and old, woody leaves should be avoided due to potential irritation. Excessive consumption may cause gastrointestinal upset. Observation is recommended if symptoms occur. Consult a veterinarian if symptoms persist or worsen.

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Farm animals

Horse icon for animal safety ratingHorse

Root tuber, Young leaves

Old, woody leaves

Risk factors

Excessive consumption, Old, fibrous leaves

Symptoms

Stomach irritation from overconsumption

observe

Garden radish is suitable for horses in small amounts as a treat. The root tuber, young leaves, and flowers are edible and nutritious. Old, woody leaves may be difficult to digest and can cause stomach irritation. Not suitable as primary feed. Monitor for overconsumption and contact vet if symptoms persist.

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Chicken icon for animal safety ratingChicken

Root tuber, Young leaves

Seeds, Old, woody leaves

Risk factors

High glucosinolate content in seeds, Woody foliage, Overfeeding

Symptoms

Gastrointestinal irritation, Diarrhea from overfeeding

observe

Garden radish is suitable for chickens in small amounts as a treat. The root tuber, young leaves, and flowers are safe. Seeds and old, woody leaves contain higher concentrations of glucosinolates and should be avoided. Overfeeding may cause gastrointestinal upset. Not suitable as a primary feed.

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Duck icon for animal safety ratingDuck

Root tuber, Young leaves

Seeds, Old, woody leaves

Risk factors

Excessive seed consumption, Consumption of old leaves

Symptoms

Gastrointestinal upset, Diarrhea

observe

Garden radish is suitable for ducks in small amounts as a treat. The root tuber, young leaves, and flowers are edible and nutritious. Seeds and old leaves contain higher concentrations of glucosinolates, which can cause gastrointestinal irritation if consumed excessively. Do not use as primary feed. Consult a veterinarian if symptoms occur.

Open animal page
Goose icon for animal safety ratingGoose

Root tuber, Young leaves

Seed pods

Risk factors

Excessive seed consumption, Sensitivity to pungent compounds

Symptoms

Gastrointestinal upset, Diarrhea

observe

Garden radish is safe for geese in small amounts, particularly the root tuber and young leaves. Seeds contain glucosinolates that can cause gastrointestinal upset if consumed excessively. Young leaves and flowers are harmless and readily eaten. Old, woody leaves should be avoided due to lower digestibility. If signs of digestive upset occur, feeding should be discontinued and a veterinarian consulted.

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Sheep icon for animal safety ratingSheep

Root tuber, Young leaves

Old, woody leaves

Risk factors

High consumption

Symptoms

Stomach irritation

contact a vet if symptoms appear

Radish is generally safe for sheep, but high consumption can cause stomach irritation.

Open animal page
Goat icon for animal safety ratingGoat

Root tuber, Young leaves

Old, woody leaves

Risk factors

High consumption

Symptoms

Stomach irritation

contact a vet if symptoms appear

No direct species-specific source was found for goats. This is a cautious inference from the sheep profile and the known plant-part risks.

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Cattle icon for animal safety ratingCattle

Root tuber, Young leaves

Seeds, Old, woody leaves

Risk factors

Excessive consumption, Feeding seeds, Use of old, fibrous foliage

Symptoms

Gastrointestinal irritation, Bloating, Diarrhea from overfeeding

observe

Garden radish is generally safe for cattle when feeding the root tuber, young leaves, or flowers. Seeds and old, woody leaves contain higher concentrations of glucosinolates and may cause gastrointestinal discomfort if consumed excessively. Suitable as part of a varied diet in moderation. Consult a veterinarian if signs of discomfort appear.

Open animal page
Pig icon for animal safety ratingPig

Root tuber, Young leaves

Seeds, Old, woody leaves

Risk factors

High consumption, Sensitivity to mustard oils

Symptoms

Gastrointestinal upset, Mucous membrane irritation

observe

Radish is suitable for pigs in moderation. The root tuber, young leaves, and flowers can be fed, but seeds and old, woody leaves should be avoided due to potential stomach irritation. Excessive consumption may cause gastrointestinal upset. Consult a veterinarian if symptoms occur.

Open animal page

These guidelines are for general information only and do not replace veterinary diagnosis. If critical plant parts were ingested or the animal shows unusual behaviour or symptoms, seek veterinary advice.

Max risk

unknown

Highest status

moderation only

Urgency

contact a vet if symptoms appear

Saving seed

Radish Saving seed

Seed viability

3 - 5 years

Practical tips

Radish Practical tips

Common beginner mistakes

Sowing too densely without thinning later results in puny roots.

Success pattern

Regular watering and the use of fleece in spring almost always guarantee a good harvest.

High-impact tips

Apply crop protection netting immediately after sowing.

Grower observations

Especially in midsummer, radishes tend to bolt extremely quickly; shadier spots are worth their weight in gold then.

Plant Profile

Additional plant images

Radish (Raphanus sativus): whole plant for plant portrait - Root vegetables, Mustard family, Harvest April - November
Radish: plant portrait. harvest: April - November.

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

Diagnosis help

Radish Diagnosis help

Pest groups

Disease groups

Prevention

Diagnosis

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

Cultural prevention

Monitoring

Yellow traps to monitor cabbage fly flight

First response

Dusting with rock dust against flea beetles

Diagnostic rules

Leaves have small holes

Possible causes: Flea beetles

  • Check soil moisture
  • Search undersides of leaves

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.

Is Radish safe for Dog?

Radish is classified as moderation only for Dog. Risk: unknown. Urgency: usually no action needed. Garden radish is safe for dogs in normal amounts. The root tuber, young leaves, seed pods, and flowers can be given as occasional treats. Overconsumption may cause stomach irritation. Old, woody leaves should be avoided as they are difficult to digest.

Is Radish safe for Cat?

Radish is classified as moderation only for Cat. Risk: unknown. Urgency: observe. The root tuber of radish is safe for cats in small amounts, while leaves, seeds, and flowers may cause gastrointestinal irritation due to glucosinolates. If large amounts are consumed or symptoms occur, consult a veterinarian.

Is Radish safe for Rabbit?

Radish is classified as moderation only for Rabbit. Risk: unknown. Urgency: observe. Garden radish is safe for rabbits in small amounts, with the root tuber, young leaves, and flowers being suitable for feeding. Seeds and old, woody leaves should be avoided due to higher glucosinolate concentrations. Overconsumption may cause gastrointestinal discomfort. Introduction should be gradual and in moderation.

Is Radish safe for Guinea pig?

Radish is classified as moderation only for Guinea pig. Risk: unknown. Urgency: observe. Garden radish is suitable for guinea pigs in small amounts as an occasional treat. The root tuber, young leaves, and flowers are safe and provide vitamin C and fiber. Seeds and old, woody leaves contain higher concentrations of glucosinolates and may cause gastrointestinal irritation if overfed. Introduce gradually. Consult a veterinarian if symptoms persist.

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

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