Profile

potatoSolanum tuberosum

The potato is a globally important staple food, cultivated for its versatile tubers. It is a heavy feeder and requires regular care, especially hilling.

potato (Solanum tuberosum): plant portrait for plant portrait - Vegetables, nightshade family, Harvest July - October
potato: plant portrait. harvest: July - October.

Quick profile

Key data

Planting

April - May

Harvest

July - October

Water

medium

Good neighbors

BeanCabbageSpinachRadish

Growing data

potato Growing data

Plant spacing

30 - 40 cm

Row spacing

60 - 70 cm

Sowing and germination

Light germinatorNo
Dark germinatorNo
Cold germinatorNo
Stratification neededNo
Pre-soaking recommendedNo
Direct sowing possibleNo
Pre-culture recommendedNo

Planting and spacing

Plant spacing30 - 40 cm
Row spacing60 - 70 cm
Plants per m²4 - 5 per m²
Bed widthfrom 80 cm
Spacing1 plant per square foot

Temperature and site

Soil temperature8 - 12 °C
Growing temperaturefrom 10 °C
Optimal temperature15 - 20 °C
Frost sensitiveYes
Late frost sensitiveYes
Heat tolerancemedium
Cold tolerancelow

Water, nutrients and care

Watermedium
Critical water phasesTuber formation, Flowering
Watering methodbase watering
Droughtmedium
Waterlogging sensitiveYes
Mulching recommendedYes
Nutrient needheavy_feeder
Compost recommendedYes
Fertilizer sensitivitymedium

Container, support and growth

Container suitableYes
Pot sizeVolume: from 20 l; Recommended: from 40 l; Diameter: from 40 cm; Depth: from 30 cm
SupportNo
Height50 - 100 cm
Width30 - 40 cm
Yield0.5 - 2 kg

Year plan

potato Calendar

All plants
Indoor sowingDirect sowingPlantingHarvest

Indoor sowing

No data

Potatoes are generally not started indoors as they require a lot of space and the young plants are sensitive.

Direct sowing

No data

Direct sowing is not common. Pre-sprouted tubers are planted outdoors from April/May.

Planting

April - May

After the last frosts, when the soil has warmed up. Plant pre-sprouted tubers or seed potatoes.

Harvest

July - October

Depending on the variety and planting time. Early potatoes from July, late varieties into October.

Year plan
  1. Plant potatoes
  2. Prepare soil
  3. Hill up potatoes
  4. Check for pests and diseases
  5. Continue to hill up potatoes
  6. Water during drought
  7. Harvest early potatoes
  8. Harvest potatoes
  9. Harvest late potatoes
  10. Prepare potatoes for storage

Growing

potato Site, soil and care

Soil pH

5.5 - 7

Spacing

30 - 40 cm

Storage

Storage potatoes: Dark, cool, and well-ventilated, Early potatoes: Not suitable for long-term storage, consume soon

Cultivation timeline for potato (Solanum tuberosum) with sowing, planting, care, and harvest months
potato: cultivation timeline. calendar: April - May, July - October.

Pruning

potato Pruning

not_applicable

Goal

not_applicable

Tools and hygiene

Clean tools after use to prevent disease transmission.

Companion guide

potato Companion guide

Companion guide

Good neighbors

BeanCabbageSpinachRadishMarigold

Health

Pests, Diseases

Pests

Colorado potato beetle

A winged beetle that feeds on the leaves of the potato plant. Both the larvae and adult beetles can cause significant damage by eating the leaves and weakening the plant.

Wireworm

The larvae of various click beetle species that live in the soil and feed on the tubers and roots of the potato plant. They cause small, round holes in the tubers.

Aphids

Small, sucking insects that colonize the underside of leaves and on young shoots. They suck plant sap and can transmit viruses.

Diseases

Late blight

A fungal disease that affects both the foliage and the tubers. It typically occurs in wet weather and can spread rapidly.

Potato scab

A bacterial disease that affects the tubers, causing unsightly, scabby, or corky lesions. It occurs mainly in warm, dry weather and alkaline soil.

Verticillium wilt

A fungal disease that affects the vascular system of the plant, leading to wilting. It can occur in various soil types.

Deficiencies

Potassium deficiency

A lack of potassium affects overall plant health and tuber development.

Magnesium deficiency

A lack of magnesium can impair photosynthesis and lead to leaf discoloration.

Plant health

FAQ

When is the best time to plant potatoes?

Potatoes are generally planted from April to May, once the soil has warmed up and severe frosts are no longer expected. Pre-sprouted tubers can be planted a little earlier.

Why do you need to hill up potatoes?

Hilling protects the growing tubers from light, preventing the formation of toxic solanine. It also encourages the development of more tubers and stabilizes the plant.

What to do if potatoes turn green?

Green parts on potatoes contain solanine and are toxic. Cut away green areas generously. If the potato is extensively green, it should not be consumed.

What is the best way to store potatoes?

Storage potatoes should be kept in a dark, cool (4-8°C), and well-ventilated place to prevent sprouting and rot. Early potatoes are not suitable for long-term storage and should be consumed soon.

Related plants

tomato

Same familyShared diseases

Both belong to the nightshade family (Solanaceae) and are susceptible to similar diseases and pests like late blight and Colorado potato beetle.

Susceptible to late blight (Phytophthora infestans) and Colorado potato beetle.

Pepper

Same familyShared diseases

Also belongs to the nightshade family (Solanaceae) and shares disease and pest risks.

Can also be affected by late blight and Colorado potato beetles.

Eggplant

Same family

As a nightshade, it shares similar susceptibilities.

Sweet potato

Same crop group

Both are starchy tubers that serve as staple foods.

Yam

Same crop group

Another important starchy tuber crop.

Cabbage

Similar nutrient needs

Like potatoes, cabbage varieties are heavy feeders and require abundant nutrients.

Corn

Similar nutrient needs

Corn is also a heavy feeder with high nutrient requirements.

Carrot

Similar water needs

Like potatoes, requires consistent but not excessive watering.

Lettuce

Similar water needs

Has a similar need for consistent soil moisture.

Sources

Public sources

  1. Wikidata entity

    Wikidata · 2026-05-13

  2. GBIF species match

    GBIF · 2026-05-13

  3. Deutschsprachige Wikipedia: Kartoffel

    Wikipedia · 2026-05-13

  4. English Wikipedia: Potato

    Wikipedia · 2026-05-13

Details

More public plant data

Names
Common

potato

Plural

potatoes

BotanicalSolanum tuberosum
Botanical authorL.
Synonyms
  1. potato plant
  2. tater
  3. tattie
  4. spud
  5. Solanum tuberosum
Common synonyms
  1. potato plant
  2. tater
  3. tattie
  4. spud
Regional names
  1. Erdapfel
  2. Erdbirne
  3. Grundbirne
  4. Potaten
  5. Tüffke
Historical names
Market names
Misspellings
Ambiguous names
  1. NameKartoffel
    Languagede
    Shared with
    1. German people
    Clarification

    Derogatory term for Germans

Search terms
  1. potato
  2. Solanum tuberosum
  3. tuber
Taxonomy
KingdomPlantae
Clades
  1. Tracheophytes
  2. Angiosperms
  3. Eudicots
  4. Asterids
OrderSolanales
Family botanicalSolanaceae
Family

nightshade family

Family idsolanaceae
GenusSolanum
Speciestuberosum
Hybrid statusnot_hybrid
Classification
Main groupVegetable
Sub groupRoot and Tuber Vegetable
Crop groupStarchy Tuber
Life cyclePerennial (often grown as annual)
Perennialyes
Woodyno
Treeno
Shrubno
Edible parts
  1. tuber
Nutrient groupCarbohydrate
Calendar
Sowing indoor
Notes

Potatoes are generally not started indoors as they require a lot of space and the young plants are sensitive.

Sowing outdoor
Notes

Direct sowing is not common. Pre-sprouted tubers are planted outdoors from April/May.

Planting out
Months
  1. 4
  2. 5
Earliest month4
Latest month5
Notes

After the last frosts, when the soil has warmed up. Plant pre-sprouted tubers or seed potatoes.

Harvest
Months
  1. 7
  2. 8
  3. 9
  4. 10
Earliest month7
Latest month10
Notes

Depending on the variety and planting time. Early potatoes from July, late varieties into October.

Month tasks
4
  1. Plant potatoes

  2. Prepare soil

  3. Hill up if late frost is expected

5
  1. Hill up potatoes

  2. Check for pests and diseases

6
  1. Continue to hill up potatoes

  2. Water during drought

7
  1. Harvest early potatoes

8
  1. Harvest potatoes

9
  1. Harvest late potatoes

10
  1. Prepare potatoes for storage

Month tasks structured
4
  1. TaskSetzen der vorgekeimten Kartoffeln
    Label

    Plant potatoes

    Priorityhigh
    Months
    1. 4
    2. 5
    ConditionBoden erwärmt, nach den letzten Frösten
    Estimated effortmedium
    Notes

    Observe planting distance, use pre-sprouted tubers or seed potatoes.

  2. TaskBodenbearbeitung
    Label

    Prepare soil

    Prioritymedium
    Months
    1. 4
    ConditionVor dem Pflanzen
    Estimated effortmedium
    Notes

    Incorporate compost or well-rotted manure.

  3. TaskSchutz vor Spätfrost
    Label

    Hill up if late frost is expected

    Priorityhigh
    Months
    1. 4
    ConditionBei Frostgefahr
    Estimated effortlow
    Notes

    Protects young shoots and tubers from frost damage.

5
  1. TaskAnhäufeln
    Label

    Hill up potatoes

    Priorityhigh
    Months
    1. 5
    2. 6
    ConditionBei ca. 15-20 cm Wuchshöhe
    Estimated effortmedium
    Notes

    Promotes tuber formation and protects from light (green potatoes are toxic).

  2. TaskSchädlings- und Krankheitskontrolle
    Label

    Check for pests and diseases

    Priorityhigh
    Months
    1. 5
    2. 6
    3. 7
    4. 8
    ConditionRegelmäßig
    Estimated effortlow
    Notes

    Pay special attention to potato beetles and late blight.

6
  1. TaskAnhäufeln
    Label

    Continue to hill up potatoes

    Prioritymedium
    Months
    1. 6
    ConditionBei starkem Wachstum
    Estimated effortmedium
    Notes

    Ensure tubers are well covered.

  2. TaskBewässerung
    Label

    Water during drought

    Prioritymedium
    Months
    1. 6
    2. 7
    3. 8
    ConditionBei Trockenheit
    Estimated effortlow
    Notes

    Consistent moisture is important for tuber development.

7
  1. TaskErnte Frühkartoffeln
    Label

    Harvest early potatoes

    Priorityhigh
    Months
    1. 7
    ConditionJe nach Sorte und Reife
    Estimated effortmedium
    Notes

    Dig carefully to avoid damaging remaining plants.

8
  1. TaskHaupternte
    Label

    Harvest potatoes

    Priorityhigh
    Months
    1. 8
    2. 9
    3. 10
    ConditionJe nach Sorte
    Estimated efforthigh
    Notes

    Harvest in dry weather. Allow storage potatoes to dry thoroughly.

9
  1. TaskErnte späte Sorten
    Label

    Harvest late potatoes

    Priorityhigh
    Months
    1. 9
    2. 10
    ConditionVor dem ersten starken Frost
    Estimated efforthigh
    Notes

    The foliage may die back before the tubers are fully mature.

10
  1. TaskLagerung vorbereiten
    Label

    Prepare potatoes for storage

    Priorityhigh
    Months
    1. 10
    ConditionNach der Ernte
    Estimated effortmedium
    Notes

    Allow potatoes to dry well, sort out damaged ones. Store in a dark, cool place.

Structured month tasks
4
  1. TaskSetzen der vorgekeimten Kartoffeln
    Label

    Plant potatoes

    Priorityhigh
    Months
    1. 4
    2. 5
    ConditionBoden erwärmt, nach den letzten Frösten
    Estimated effortmedium
    Notes

    Observe planting distance, use pre-sprouted tubers or seed potatoes.

  2. TaskBodenbearbeitung
    Label

    Prepare soil

    Prioritymedium
    Months
    1. 4
    ConditionVor dem Pflanzen
    Estimated effortmedium
    Notes

    Incorporate compost or well-rotted manure.

  3. TaskSchutz vor Spätfrost
    Label

    Hill up if late frost is expected

    Priorityhigh
    Months
    1. 4
    ConditionBei Frostgefahr
    Estimated effortlow
    Notes

    Protects young shoots and tubers from frost damage.

5
  1. TaskAnhäufeln
    Label

    Hill up potatoes

    Priorityhigh
    Months
    1. 5
    2. 6
    ConditionBei ca. 15-20 cm Wuchshöhe
    Estimated effortmedium
    Notes

    Promotes tuber formation and protects from light (green potatoes are toxic).

  2. TaskSchädlings- und Krankheitskontrolle
    Label

    Check for pests and diseases

    Priorityhigh
    Months
    1. 5
    2. 6
    3. 7
    4. 8
    ConditionRegelmäßig
    Estimated effortlow
    Notes

    Pay special attention to potato beetles and late blight.

6
  1. TaskAnhäufeln
    Label

    Continue to hill up potatoes

    Prioritymedium
    Months
    1. 6
    ConditionBei starkem Wachstum
    Estimated effortmedium
    Notes

    Ensure tubers are well covered.

  2. TaskBewässerung
    Label

    Water during drought

    Prioritymedium
    Months
    1. 6
    2. 7
    3. 8
    ConditionBei Trockenheit
    Estimated effortlow
    Notes

    Consistent moisture is important for tuber development.

7
  1. TaskErnte Frühkartoffeln
    Label

    Harvest early potatoes

    Priorityhigh
    Months
    1. 7
    ConditionJe nach Sorte und Reife
    Estimated effortmedium
    Notes

    Dig carefully to avoid damaging remaining plants.

8
  1. TaskHaupternte
    Label

    Harvest potatoes

    Priorityhigh
    Months
    1. 8
    2. 9
    3. 10
    ConditionJe nach Sorte
    Estimated efforthigh
    Notes

    Harvest in dry weather. Allow storage potatoes to dry thoroughly.

9
  1. TaskErnte späte Sorten
    Label

    Harvest late potatoes

    Priorityhigh
    Months
    1. 9
    2. 10
    ConditionVor dem ersten starken Frost
    Estimated efforthigh
    Notes

    The foliage may die back before the tubers are fully mature.

10
  1. TaskLagerung vorbereiten
    Label

    Prepare potatoes for storage

    Priorityhigh
    Months
    1. 10
    ConditionNach der Ernte
    Estimated effortmedium
    Notes

    Allow potatoes to dry well, sort out damaged ones. Store in a dark, cool place.

Cultivation specs
Seed
Light germinatorno
Dark germinatorno
Cold germinatorno
Stratification neededno
Pre soaking recommendedno
Direct sowing possibleno
Pre culture recommendedno
Spacing
Plant spacing cm min.30
Plant spacing cm max.40
Row spacing cm min.60
Row spacing cm max.70
Recommended density per sqm min.4
Recommended density per sqm max.5
Min. bed width80 cm
Square foot gardening spacing1 plant per square foot
Spacing notes

Adjust plant spacing according to variety and desired tuber size. Row spacing for good ventilation and easy care.

Growth dimensions
Height cm min.50
Height cm max.100
Width cm min.30
Width cm max.40
Growth speedmedium
Final size notes

Plants form bushy shoots and grow into medium to large specimens.

Temperature
Min. growing temperature10 °C
Optimal temperature c min.15
Optimal temperature c max.20
Max. heat tolerance30 °C
Soil temperature for sowing c min.8
Soil temperature for sowing c optimal12
Frost sensitiveyes
Late frost sensitiveyes
Heat tolerancemedium
Cold tolerancelow
Temperature notes

Prefers cool to moderate temperatures. Extreme heat can affect tuber formation.

Water
Water needmedium
Critical water phases
  1. Tuber formation
  2. Flowering
Drought tolerantno
Drought sensitivitymedium
Waterlogging sensitiveyes
Mulching recommendedyes
Water notes

Consistent soil moisture is crucial. Avoid waterlogging at all costs.

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

Requires abundant nutrients, especially potassium. Balanced fertilization before planting and during growth.

Container
Container suitableyes
Min. pot volume20 l
Recommended pot volume40 l
Min. pot depth30 cm
Min. pot diameter40 cm
Plants per container min.1
Plants per container max.1
Drainage requiredyes
Repotting neededno
Container notes

Large pots or grow bags with good drainage are necessary. Regular watering and feeding are important.

Support
Needs supportno
Support recommendedno
Climbingno
Viningno
Trellis recommendedno
Training requiredno
Support notes

Potato plants grow bushy and do not require additional support.

Cultivation modes
Outdoor bed suitableyes
Raised bed suitableyes
Container suitableyes
Balcony suitableyes
Greenhouse suitableno
Polytunnel suitableno
Indoor suitableno
Windowsill suitableno
Hydroponic possibleno
Permaculture suitableyes
No dig suitableyes
Yield density
Yield per plant min.0.5
Yield per plant max.2
Yield unitkg
Yield per sqm min.2
Yield per sqm max.5
Yield reliabilitymedium
Yield notes

Yields vary greatly depending on variety, soil quality, weather, and care.

Site
Location

Sunny to partial shade

Soil pH min.5.5
Soil pH max.7
Soil type
  1. loamy
  2. sandy loam
  3. humus-rich
Site notes

Prefers a sunny location with well-drained, loose soil. Avoid waterlogging.

Soil
Soil preference

Deep, loose, humus-rich, slightly acidic to neutral

Soil amendment

Compost, well-rotted manure

Soil notes

Potatoes prefer deep, loose soil that does not form waterlogging. Improve heavy clay soil.

Watering
Water needmedium
Frequency

Regularly, especially during dry periods and tuber formation

Method

Evenly at the root zone, avoid watering the foliage

Water notes

Consistent moisture is important for tuber development. Avoid waterlogging.

Nutrition
Fertilizer needhigh
Recommendations

Incorporate compost or organic fertilizer before planting. Top-dress with a potassium-rich fertilizer during growth if needed.

Fertilizer types
  1. organic
  2. potassium-rich
Nutrition notes

Potatoes are heavy feeders and require abundant nutrients, especially potassium for tuber formation.

Cultivation planning
Succession sowing
Possibleno
Bed planning notes

Potatoes are good predecessors for many vegetables. Do not plant after tomatoes, peppers, or eggplants (same family).

Rotation priorityhigh
Interplanting potentiallow
Mechanization relevancehigh
Crop rotation
  1. Potatoes are good predecessors for many vegetables.
  2. Do not plant after tomatoes, peppers, or eggplants (same family).
  3. Observe a break of at least 3-4 years between potato crops.
Deficiencies
Potassium deficiency
Slugkaliummangel
Name

Potassium deficiency

Description

A lack of potassium affects overall plant health and tuber development.

Symptoms

Yellowish margins on older leaves, which may later become necrotic. Reduced growth and smaller tubers.

Management
  1. Ensure adequate potassium supply through organic fertilizers (e.g., wood ash, well-rotted manure) or specific potassium fertilizers.
  2. Soil analysis to determine exact potassium levels.
  3. Consistent watering.
Notes

Potatoes are heavy feeders and have a high potassium requirement.

Magnesium deficiency
Slugmagnesiummangel
Name

Magnesium deficiency

Description

A lack of magnesium can impair photosynthesis and lead to leaf discoloration.

Symptoms

Interveinal chlorosis (yellowing between the leaf veins) on older leaves, while the veins remain green. Can lead to premature leaf drop.

Management
  1. Apply Epsom salts (magnesium sulfate) as a foliar spray.
  2. Incorporate magnesium-rich organic materials (e.g., dolomitic lime, if pH allows).
  3. Soil analysis to check magnesium levels.
Notes

Magnesium deficiency is more common in sandy soils or soils with high potassium content.

Problems
Green tubers
Sluggruene_kartoffeln
Name

Green tubers

Description

Potatoes turn green when exposed to light, leading to the formation of solanine. Solanine is a toxic bitter compound.

Symptoms

Green discoloration of the potato skin, often where the tuber was exposed above the soil or where hilling was insufficient.

Management
  1. Regularly hill up potato plants during growth to ensure tubers are well covered with soil.
  2. Harvest in darkness or early morning to minimize light exposure.
  3. Cut away green parts generously before consumption. Do not eat potatoes with extensive greening.
Notes

Hilling is one of the most important measures to prevent green potatoes.

Hollow heart
Slughohlherz
Name

Hollow heart

Description

A physiological disorder that results in cavities in the center of the potato tuber. It is often caused by uneven growing conditions.

Symptoms

One or more hollow spaces inside the potato tuber, often visible after cooking or cutting.

Management
  1. Ensure consistent watering, especially during dry periods.
  2. Avoid extreme temperature fluctuations.
  3. Balanced fertilization, particularly adequate potassium supply.
  4. Plant varieties less prone to hollow heart.
Notes

Hollow heart is usually a problem with fast-growing varieties and inconsistent watering.

Problem management
Common pest groups
  1. Beetles
  2. Larvae
  3. Sucking insects
Common disease groups
  1. Fungal diseases
  2. Bacterial diseases
  3. Viral diseases
Prevention principles
  1. Plant resistant varieties.
  2. Good crop rotation (at least 3-4 year break).
  3. Use healthy seed potatoes.
  4. Create optimal site and soil conditions.
  5. Ensure adequate nutrient supply.
  6. Consistent watering, avoid waterlogging.
  7. Regular monitoring for pests and diseases.
  8. Encourage beneficial insects.
  9. Garden hygiene (removal of plant debris).
Diagnosis notes

Accurate diagnosis of potato problems often requires examining symptoms on leaves, stems, and tubers, as well as considering growing conditions and weather patterns.

Disease graph
Scopepotato
Profiles
  1. Sluglate_blight
    Severityhigh
    Conditions
    1. High humidity
    2. Wet foliage
    3. Moderate temperatures (15-25°C)
    Affected parts
    1. Leaves
    2. Stems
    3. Tubers
    Prevention
    1. Choose resistant varieties
    2. Good crop rotation
    3. Adequate plant spacing
    4. Ensure good soil drainage
    5. Remove infected plant debris
    Organic control
    1. Copper-based sprays (preventative)
    2. Plant teas (e.g., horsetail)
    3. Strengthening plant defenses
  2. Slugpotato_scab
    Severitymedium
    Conditions
    1. Alkaline soil (pH > 6.0)
    2. Dry periods during tuber formation
    3. High humus content
    Affected parts
    1. Tubers
    Prevention
    1. Maintain slightly acidic soil (pH 5.0-5.5)
    2. Consistent watering
    3. Choose resistant varieties
    4. Good crop rotation
    Organic control
    1. Acidify soil (e.g., with peat or sulfur-containing fertilizers, use cautiously)
    2. Soil improvement with compost
    3. Plant less susceptible varieties
  3. Slugpotato_beetle
    Severityhigh
    Conditions
    1. Warm temperatures
    2. Lack of natural predators
    Affected parts
    1. Leaves
    2. Young shoots
    Prevention
    1. Regular monitoring
    2. Hand-picking
    3. Encourage beneficial insects
    4. Good crop rotation
    5. Intercropping (e.g., with beans)
    Organic control
    1. Biological insecticides (neem oil, Bacillus thuringiensis)
    2. Collection of egg masses
Diagnostic rules
  1. Symptom

    Large, water-soaked spots on leaves that rapidly turn brown and form a white, fuzzy mold on the underside.

    Possible causes
    1. late_blight
    First checks
    1. Check weather conditions (high humidity, wet foliage).
    2. Examine tubers for browning and rot.
  2. Symptom

    Small, round holes or tunnels in the potato tubers.

    Possible causes
    1. wireworm
    First checks
    1. Check the soil for yellowish, hard larvae.
    2. Note if plants are weakened or wilting.
  3. Symptom

    Irregular, corky lesions on the tuber surface.

    Possible causes
    1. potato_scab
    First checks
    1. Measure soil pH (should not exceed 6.0).
    2. Check if tubers received adequate water during dry periods.
Prevention strategy
Cultural
  1. Choose robust, disease-resistant varieties.
  2. Maintain good crop rotation (at least a 3-4 year break).
  3. Verwenden Sie nur gesundes, zertifiziertes Pflanzgut.
  4. Provide a well-ventilated site with loose, deep soil.
  5. Avoid waterlogging through good drainage.
  6. Keep plants healthy through balanced fertilization and adjusted watering.
  7. Remove infected plant residues promptly and destroy them.
  8. Hill up plants regularly to protect tubers from light and promote soil health.
Monitoring
  1. Regularly inspect plants for signs of pests (e.g. Colorado potato beetle, aphids) and diseases (e.g. late blight).
  2. Pay particular attention to leaf undersides and the base of stems.
  3. Check tubers at harvest for damage and signs of disease.
Organic first response
  1. For pest infestation: hand-pick, use beneficial insects, or apply biological sprays (neem oil, potassium soap).
  2. If disease is suspected: remove and destroy infected plant parts and apply plant teas preventively (e.g. horsetail) or copper products for late blight.
  3. For nutrient deficiency: targeted fertilization with organic materials (e.g. compost, Epsom salt for magnesium deficiency).
Notes

A proactive approach to prevention is key to successful potato cultivation. Observation and prompt action when problems arise are essential.

Diagnosis
Approach

Start with a visual inspection of the entire plant, including leaves, stems, and tubers. Consider the growing conditions, weather, and the site's cultivation history. Compare symptoms with known pests and diseases.

Common pitfalls
  1. Confusing nutrient deficiencies with diseases.
  2. Misinterpreting stress symptoms from environmental factors (e.g., drought, heat) as diseases.
  3. Late detection of problems.
Further steps
  1. Conduct a soil analysis if necessary.
  2. Consult with gardening experts or plant health services.
  3. Document symptoms and actions for future reference.
Notes

Accurate diagnosis is the foundation for effective problem management. Do not hesitate to seek professional help if unsure.

Phenology
Stages
  1. Germination
  2. Sprouting
  3. Flowering
  4. Tuber formation
  5. Maturity
Notes

The vegetation period varies depending on the variety, from about 80 days (early potatoes) to over 140 days (late storage potatoes).

Harvest
  1. Early potatoes: July to August
  2. Mid-early potatoes: August to September
  3. Late potatoes: September to October
Harvest details
Harvest frequency

Single harvest per plant, depending on the variety's maturity time.

Harvest indicators
  1. Yellowing and dying back of foliage (for late varieties)
  2. Size of tubers (carefully digging up a sample)
  3. Variety's maturity date
Post harvest handling

Dig up potatoes carefully to avoid damage. Allow to dry thoroughly (especially storage potatoes) and brush off excess soil, but do not wash. Sort out damaged tubers immediately.

Storage
  1. Storage potatoes: Dark, cool, and well-ventilated
  2. Early potatoes: Not suitable for long-term storage, consume soon
Storage details
General storage category

Root vegetable

Storage life

Storage potatoes: Several months (up to 6-9 months under optimal conditions). Early potatoes: A few weeks.

Processing options
  1. Boiling
  2. Frying
  3. Baking
  4. Mashing
  5. French fries
  6. Chips
  7. Starch extraction
Kitchen usage

Potatoes are a staple food and versatile in the kitchen. They can be prepared by boiling, frying, baking, as mashed potatoes, in soups, stews, salads, or as a side dish. They are an important source of carbohydrates and some vitamins.

Safety and edibility
Edible parts
  1. Tuber
Inedible or caution parts
  1. Green potatoes (contain solanine)
  2. Sprouts (contain solanine)
  3. Leaves
  4. Stems
  5. Fruits (berries)
Toxicity notes

Green parts and sprouts of potatoes contain the toxic alkaloid solanine, which can cause gastrointestinal distress and neurological symptoms if consumed. These parts must be cut away generously.

Raw consumption

Raw potatoes are difficult to digest and may contain solanine. They are generally not consumed raw, although in some cultures they are processed raw in small quantities.

Seed saving
  1. Seed formation is possible in potatoes, but propagation is usually done vegetatively via tubers (seed potatoes).
  2. Plants grown from seed may differ genetically from the parent plant.
  3. The fruits (small green berries) contain the seeds.
Seed saving advanced
Notes

For variety preservation or breeding new varieties, seeds are extracted from the fruits, dried, and stratified. Germination requires patience and specific conditions. Propagation via tubers is the most practical method for home gardens.

Woody crop details
Rootstock relevancenot_applicable
Renewal pruning relevancenot_applicable
Notes

Potatoes are not woody plants and therefore have no specific details for woody varieties.

Ecology
Pollinator valuelow
Wildlife valuelow
Biodiversity notes

Potato plants occasionally offer nectar to insects like bees and bumblebees, but are not a primary food source. The fruits are toxic to most wildlife.