Plant Profile

Runner beanPhaseolus coccineus

Fast-growing climber with edible flowers and nutritious seeds.

Runner bean (Phaseolus coccineus): plant portrait - Legumes, Legumes, Harvest July - October
Runner bean: plant portrait. harvest: July - October.

Quick profile

Key data

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

Good neighbors

CornCucumberCabbage

Avoid

Onions & GarlicAlliumOnion

Indoor & direct sowing

Runner bean: Sowing and germination

Indoor sowing

Pre-culture in pots possible from mid-April to advance harvest.

Direct sowing outdoors

Direct sowing only after the last frost (mid-May) when soil is warm.

Seed depth3 - 5 cm
Germination temp12 - 25 °C
Germination time8 - 14 days
Light germinatorNo
Dark germinatorYes
Cold germinatorNo
Stratification neededNo
Pre-soaking recommendedYes

Planting & site

Runner bean: Planting and spacing

Planting outdoors

Plant out hardened seedlings from mid-May onwards.

Plant spacing40 - 60 cm
Row spacing60 - 100 cm
Plants per m²4 - 8 per m²
Bed widthfrom 80 cm

Site & practical notes

Title: Water conservation through mulching, Content: Since runner beans require lots of water, a thick layer of mulch helps retain soil moisture.

Temperature & frost

Runner bean: Temperature and site

Growing temperaturefrom 10 °C
Optimal temperature18 - 25 °C
Max. heatup to 30 °C
Soil temperature12 - 18 °C
Frost sensitiveYes
Late frost sensitiveYes
Heat tolerancemedium
Cold tolerancelow

Water & nutrients

Runner bean: Water, nutrients and care

Waterhigh
Critical water phasesFlowering period, Pod formation
Watering methodWater only at the base
Droughthigh
Waterlogging sensitiveYes
Mulching recommendedYes
Nutrient neednitrogen fixer
Compost recommendedYes
Fertilizer sensitivitylow

Container & growth

Runner bean: Container, support and growth

Container suitableYes
Pot sizeVolume: from 20 l; Recommended: from 40 l; Diameter: from 35 cm; Depth: from 30 cm
SupportYes; 250 - 400 cm
Height200 - 400 cm
Width30 - 50 cm
Root depth40 - 60 cm
Root spread20 - 40 cm
Yield0.5 - 1.5 kg

Year plan

Runner bean Calendar

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

Recurring tasks

Growth controlJuly - August
Pinch out tips once they reach the top of the support to direct energy into the pods.

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

Quiet month

March

Quiet month

April

No additional single task

May

Direct sowing outdoors

Direct sowing

  • Direct sowing outdoorsSow beans in clusters of 4-6 seeds around the poles.

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

Quiet month

December

Quiet month

Flowering & pollination

Runner bean Flowering & pollination

Flowering period

June to September

Flower color

Scarlet red, occasionally white or bicolor

Self-fertility

partial

Pollinator needed

yes

Overview

Predominantly cross-pollinated by insects, especially bumblebees and bees.

Notes

Bumblebees often 'rob' nectar by piercing the flower base. High temperatures above 30°C can inhibit successful pollination.

Pruning & care

Runner bean Pruning & care

Pruning type

climbing_support_optimization

Pruning timing

Summer

Growth control Pinch out tips once they reach the top of the support to direct energy into the pods.

Remove

Preserve

Avoid

Tools and hygiene

Use clean hands or sharp shears to prevent the spread of viruses.

Companion guide

Runner bean Companion guide

Companion guide

Good neighbors

CornCucumberCabbage

Avoid

Onions & GarlicAlliumOnion

Use & storage

Runner bean Use & storage

Harvest

Pick green pods continuously; dry beans only at full maturity in autumn.

Storage

Legume (fresh or dried)

Storage life

Dried 1-2 years; frozen approx. 12 months.

Primary use

Edible bean (vegetable or pulse)

Harvest

Pick green pods continuously; dry beans only at full maturity in autumn.

Processing

After harvest

Process fresh pods quickly; clean dry beans and store in a cool place.

Edibility & safety

Runner bean Edibility & safety

For people

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

Edible parts:Pods (young), Seeds (mature and immature), Flowers, Root tubers (cooked)
Caution parts:Raw seeds and pods (phytohaemagglutinin content)
Raw consumption:Not suitable for raw consumption (toxic).

Safety notes

Contains the toxin phytohaemagglutinin (lectin) when raw, which is destroyed by boiling for at least 10 minutes.

Animal safety

For animals, the specific plant part matters here: some parts may be suitable, while others should be avoided. At least one critical rating is listed for 11 animal types.

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

cooked pods (young), cooked seeds (mature and immature)

raw seeds and pods

Risk factors

raw consumption, insufficient cooking, access to immature or mature seeds

Symptoms

vomiting, diarrhea, abdominal pain

contact a vet if symptoms appear

['Runner bean (Phaseolus coccineus) contains the lectin phytohaemagglutinin (phyasin) when raw, which can cause gastrointestinal irritation in dogs. Sufficient cooking (at least 10 minutes boiling) destroys the toxin, making cooked pods and seeds suitable as an occasional treat. Flowers are also edible and non-toxic. Raw seeds and pods are toxic and should be avoided.']

Open animal page
Cat icon for animal safety ratingCat

Pods (young, cooked), Seeds (mature and immature, cooked)

Raw seeds and pods, Raw flowers

Risk factors

Raw consumption, Insufficient cooking

Symptoms

Vomiting, Diarrhea, Abdominal pain

contact a vet if symptoms appear

['Cooked pods, seeds, and flowers are suitable for cats in small amounts as an occasional treat. Raw plant parts contain the toxin phytohaemagglutinin, which causes gastrointestinal irritation. If raw parts are ingested, seek veterinary advice.']

Open animal page
Rabbit icon for animal safety ratingRabbit

cooked pods (young), cooked seeds (mature and immature)

raw seeds, raw pods

Risk factors

Raw consumption of seeds or pods, Insufficient cooking

Symptoms

diarrhea, abdominal pain

contact a vet if symptoms appear

Cooked parts of runner bean can be given to rabbits occasionally as a treat, but raw seeds and pods are toxic due to the lectin phytohaemagglutinin and can cause gastrointestinal distress. Only feed cooked parts and offer in small amounts.

Open animal page
Guinea pig icon for animal safety ratingGuinea pig

cooked pods (young), cooked seeds (mature and immature)

raw seeds, raw pods

Risk factors

raw consumption, insufficient cooking

Symptoms

vomiting, diarrhea, abdominal pain

contact a vet if symptoms appear

Cooked parts are suitable for guinea pigs in small amounts as an occasional treat. Raw material contains the lectin phytohaemagglutinin, which causes gastrointestinal irritation. No specific studies on guinea pigs found, but conservative classification based on known toxicity in other mammals and similar digestive physiology. Root tubers only when cooked and very rarely due to high starch content.

Open animal page
Hamster icon for animal safety ratingHamster

cooked pods (young), cooked seeds (mature and immature)

raw seeds, raw pods

Risk factors

Raw consumption of seeds or pods, Insufficient cooking

Symptoms

vomiting, diarrhea, abdominal pain

contact a vet if symptoms appear

['Cooked parts of runner bean can be given to hamsters occasionally as a treat. Raw material contains the lectin phytohaemagglutinin, causing gastrointestinal irritation. Only feed cooked pods, seeds, and flowers. Not a regular staple food.']

Open animal page
Budgie icon for animal safety ratingBudgie

No suitable parts listed

No risk parts listed

unknown

['Only cooked young pods in small amounts as an occasional treat are suitable. Raw parts contain the toxin phytohaemagglutinin and are hazardous. Flowers and mature seeds should be avoided due to lack of data for budgies.']

Open animal page

Farm animals

Horse icon for animal safety ratingHorse

Young pods (cooked), Mature seeds (cooked)

Raw seeds and pods, Raw root tubers

Risk factors

Raw consumption, Insufficient cooking, Overconsumption of cooked parts

Symptoms

Vomiting, Diarrhea, Abdominal pain

contact a vet if symptoms appear

Cooked pods, seeds, and flowers are tolerable in moderation. Raw parts contain the toxic phytohaemagglutinin and can cause gastrointestinal distress. No indications of severe poisoning in horses with normal feeding of cooked parts.

Open animal page
Chicken icon for animal safety ratingChicken

No suitable parts listed

No risk parts listed

unknown

['Runner bean contains the lectin phytohaemagglutinin (phyasin) when raw, which can cause gastrointestinal upset in chickens. Cooked parts are suitable in moderation as a treat or supplemental feed. Raw seeds and pods are toxic and should be avoided.']

Open animal page
Duck icon for animal safety ratingDuck

Young pods (cooked), Mature seeds (cooked)

Raw seeds and pods, Raw root tubers

Risk factors

Raw consumption of seeds or pods, Insufficient cooking

Symptoms

Vomiting, Diarrhea, Abdominal pain

contact a vet if symptoms appear

Cooked pods and seeds are suitable for ducks in moderation; raw parts contain the toxic phytohaemagglutinin and should be avoided. Flowers are considered safe. If ingestion of raw plant material is suspected, a veterinarian should be consulted.

Open animal page
Goose icon for animal safety ratingGoose

cooked pods (young), cooked seeds (mature and immature)

raw seeds, raw pods

Risk factors

Raw consumption of seeds or pods, Insufficient cooking

Symptoms

vomiting, diarrhea, abdominal pain

contact a vet if symptoms appear

['Geese can tolerate cooked pods, seeds, and flowers of runner bean in small amounts. Raw material contains the lectin phytohaemagglutinin, which causes gastrointestinal irritation. When feeding, use only cooked parts and avoid raw seeds or pods.']

Open animal page
Sheep icon for animal safety ratingSheep

cooked pods (young), cooked seeds (mature and immature)

raw seeds, raw pods

unknown

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

Open animal page
Goat icon for animal safety ratingGoat

cooked pods (young), cooked seeds (mature and immature)

raw seeds, raw pods

unknown

No reliable species-specific assessment is available.

Open animal page
Cattle icon for animal safety ratingCattle

Pods (young, cooked), Seeds (mature, cooked)

Raw seeds and pods

Risk factors

Raw consumption, Insufficient cooking, Overconsumption of cooked beans

Symptoms

Vomiting, Diarrhea, Abdominal pain

observe

['Cooked runner bean (pods, seeds, flowers) is tolerable for cattle in moderation and provides protein and energy. Raw parts contain the lectin phytohaemagglutinin, which can cause gastroenteritis in cattle. Overfeeding cooked beans may lead to bloat and digestive upset.']

Open animal page
Pig icon for animal safety ratingPig

cooked pods (young), cooked seeds (mature and immature)

raw seeds, raw pods

Risk factors

raw consumption of seeds or pods, insufficient cooking

Symptoms

vomiting, diarrhea, abdominal pain

contact a vet if symptoms appear

['Runner bean contains the toxin phytohaemagglutinin when raw, which is destroyed by cooking. Cooked parts are suitable for pigs in moderation, raw parts are toxic.']

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

do not feed

Urgency

contact a vet if symptoms appear

Saving seed

Runner bean Saving seed

Seed viability

3 - 5 years

Isolation

500 - 1000 meters (due to cross-pollination)

Practical tips

Runner bean Practical tips

Common beginner mistakes

Sowing too early in cold soil leads to rot.

Success pattern

Ample watering during flowering ensures a high yield.

High-impact tips

Stabilize young plants by hilling up.

Grower observations

Unlike common beans, runner bean cotyledons remain underground during germination.

Health

Pests, Diseases

Pests

Black bean aphid

  • Curled leaves
  • Sticky honeydew

Spider mites

  • Fine webs
  • Yellowish speckling on leaves

Diseases

Bean anthracnose

Sunken, dark spots on pods and stems

Deficiencies

Nitrogen deficiency

  • Yellowing of older leaves
  • Stunted growth

Plant health

Diagnosis help

Runner bean Diagnosis help

Pest groups

Disease groups

Prevention

Diagnosis

Most common cause of crop failure in runner beans is water stress during flowering.

Cultural prevention

Monitoring

Weekly check for aphid colonies

First response

Potassium soap solution for initial aphid infestation

Diagnostic rules

Yellow leaves with green veins

Possible causes: Manganese deficiency, Magnesium deficiency

  • Check soil pH

FAQ

Are runner beans toxic when raw?

Yes, they contain phytohaemagglutinin. They must be boiled for at least 10 minutes to be safe to eat.

Is Runner bean safe for Dog?

Runner bean is classified as moderation only for Dog. Risk: unknown. Urgency: contact a vet if symptoms appear. ['Runner bean (Phaseolus coccineus) contains the lectin phytohaemagglutinin (phyasin) when raw, which can cause gastrointestinal irritation in dogs. Sufficient cooking (at least 10 minutes boiling) destroys the toxin, making cooked pods and seeds suitable as an occasional treat. Flowers are also edible and non-toxic. Raw seeds and pods are toxic and should be avoided.']

Is Runner bean safe for Cat?

Runner bean is classified as do not feed for Cat. Risk: unknown. Urgency: contact a vet if symptoms appear. ['Cooked pods, seeds, and flowers are suitable for cats in small amounts as an occasional treat. Raw plant parts contain the toxin phytohaemagglutinin, which causes gastrointestinal irritation. If raw parts are ingested, seek veterinary advice.']

Is Runner bean safe for Rabbit?

Runner bean is classified as do not feed for Rabbit. Risk: unknown. Urgency: contact a vet if symptoms appear. Cooked parts of runner bean can be given to rabbits occasionally as a treat, but raw seeds and pods are toxic due to the lectin phytohaemagglutinin and can cause gastrointestinal distress. Only feed cooked parts and offer in small amounts.

Is Runner bean safe for Guinea pig?

Runner bean is classified as do not feed for Guinea pig. Risk: unknown. Urgency: contact a vet if symptoms appear. Cooked parts are suitable for guinea pigs in small amounts as an occasional treat. Raw material contains the lectin phytohaemagglutinin, which causes gastrointestinal irritation. No specific studies on guinea pigs found, but conservative classification based on known toxicity in other mammals and similar digestive physiology. Root tubers only when cooked and very rarely due to high starch content.

Sources

Public sources

  1. Wikidata entity

    Wikidata · 2026-05-13

  2. GBIF species match

    GBIF · 2026-05-13

  3. Deutschsprachige Wikipedia: Feuerbohne

    Wikipedia · 2026-05-13

  4. English Wikipedia: Phaseolus coccineus

    Wikipedia · 2026-05-13

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