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.

Quick profile
Key data
Planting
April - May
Harvest
July - October
Water
medium
Growing data
potato Growing data
Plant spacing
30 - 40 cm
Row spacing
60 - 70 cm
Sowing and germination
Planting and spacing
Temperature and site
Water, nutrients and care
Container, support and growth
Year plan
potato Calendar
Indoor sowing
Potatoes are generally not started indoors as they require a lot of space and the young plants are sensitive.
Direct sowing
Direct sowing is not common. Pre-sprouted tubers are planted outdoors from April/May.
Planting
After the last frosts, when the soil has warmed up. Plant pre-sprouted tubers or seed potatoes.
Harvest
Depending on the variety and planting time. Early potatoes from July, late varieties into October.
Year plan
- Plant potatoes
- Prepare soil
- Hill up potatoes
- Check for pests and diseases
- Continue to hill up potatoes
- Water during drought
- Harvest early potatoes
- Harvest potatoes
- Harvest late potatoes
- 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

Pruning
potato Pruning
not_applicable
Goal
not_applicable
Tools and hygiene
Clean tools after use to prevent disease transmission.
Companion guide
potato Companion guide
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
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
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
As a nightshade, it shares similar susceptibilities.
Sweet potato
Both are starchy tubers that serve as staple foods.
Yam
Another important starchy tuber crop.
Cabbage
Like potatoes, cabbage varieties are heavy feeders and require abundant nutrients.
Corn
Corn is also a heavy feeder with high nutrient requirements.
Carrot
Like potatoes, requires consistent but not excessive watering.
Lettuce
Has a similar need for consistent soil moisture.
Internal links
Related plants
Sources
Public sources
- Wikidata entity
Wikidata · 2026-05-13
- GBIF species match
GBIF · 2026-05-13
- Deutschsprachige Wikipedia: Kartoffel
Wikipedia · 2026-05-13
- English Wikipedia: Potato
Wikipedia · 2026-05-13
Details
More public plant data
Names
Common
potato
Plural
potatoes
Synonyms
- potato plant
- tater
- tattie
- spud
- Solanum tuberosum
Common synonyms
- potato plant
- tater
- tattie
- spud
Regional names
- Erdapfel
- Erdbirne
- Grundbirne
- Potaten
- Tüffke
Historical names
Market names
Misspellings
Ambiguous names
- NameKartoffelLanguagede
Shared with
- German people
Clarification
Derogatory term for Germans
Search terms
- potato
- Solanum tuberosum
- tuber
Taxonomy
Clades
- Tracheophytes
- Angiosperms
- Eudicots
- Asterids
Family
nightshade family
Classification
Edible parts
- tuber
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
- 4
- 5
Notes
After the last frosts, when the soil has warmed up. Plant pre-sprouted tubers or seed potatoes.
Harvest
Months
- 7
- 8
- 9
- 10
Notes
Depending on the variety and planting time. Early potatoes from July, late varieties into October.
Month tasks
4
Plant potatoes
Prepare soil
Hill up if late frost is expected
5
Hill up potatoes
Check for pests and diseases
6
Continue to hill up potatoes
Water during drought
7
Harvest early potatoes
8
Harvest potatoes
9
Harvest late potatoes
10
Prepare potatoes for storage
Month tasks structured
4
- TaskSetzen der vorgekeimten Kartoffeln
Label
Plant potatoes
PriorityhighMonths
- 4
- 5
ConditionBoden erwärmt, nach den letzten FröstenEstimated effortmediumNotes
Observe planting distance, use pre-sprouted tubers or seed potatoes.
- TaskBodenbearbeitung
Label
Prepare soil
PrioritymediumMonths
- 4
ConditionVor dem PflanzenEstimated effortmediumNotes
Incorporate compost or well-rotted manure.
- TaskSchutz vor Spätfrost
Label
Hill up if late frost is expected
PriorityhighMonths
- 4
ConditionBei FrostgefahrEstimated effortlowNotes
Protects young shoots and tubers from frost damage.
5
- TaskAnhäufeln
Label
Hill up potatoes
PriorityhighMonths
- 5
- 6
ConditionBei ca. 15-20 cm WuchshöheEstimated effortmediumNotes
Promotes tuber formation and protects from light (green potatoes are toxic).
- TaskSchädlings- und Krankheitskontrolle
Label
Check for pests and diseases
PriorityhighMonths
- 5
- 6
- 7
- 8
ConditionRegelmäßigEstimated effortlowNotes
Pay special attention to potato beetles and late blight.
6
- TaskAnhäufeln
Label
Continue to hill up potatoes
PrioritymediumMonths
- 6
ConditionBei starkem WachstumEstimated effortmediumNotes
Ensure tubers are well covered.
- TaskBewässerung
Label
Water during drought
PrioritymediumMonths
- 6
- 7
- 8
ConditionBei TrockenheitEstimated effortlowNotes
Consistent moisture is important for tuber development.
7
- TaskErnte Frühkartoffeln
Label
Harvest early potatoes
PriorityhighMonths
- 7
ConditionJe nach Sorte und ReifeEstimated effortmediumNotes
Dig carefully to avoid damaging remaining plants.
8
- TaskHaupternte
Label
Harvest potatoes
PriorityhighMonths
- 8
- 9
- 10
ConditionJe nach SorteEstimated efforthighNotes
Harvest in dry weather. Allow storage potatoes to dry thoroughly.
9
- TaskErnte späte Sorten
Label
Harvest late potatoes
PriorityhighMonths
- 9
- 10
ConditionVor dem ersten starken FrostEstimated efforthighNotes
The foliage may die back before the tubers are fully mature.
10
- TaskLagerung vorbereiten
Label
Prepare potatoes for storage
PriorityhighMonths
- 10
ConditionNach der ErnteEstimated effortmediumNotes
Allow potatoes to dry well, sort out damaged ones. Store in a dark, cool place.
Structured month tasks
4
- TaskSetzen der vorgekeimten Kartoffeln
Label
Plant potatoes
PriorityhighMonths
- 4
- 5
ConditionBoden erwärmt, nach den letzten FröstenEstimated effortmediumNotes
Observe planting distance, use pre-sprouted tubers or seed potatoes.
- TaskBodenbearbeitung
Label
Prepare soil
PrioritymediumMonths
- 4
ConditionVor dem PflanzenEstimated effortmediumNotes
Incorporate compost or well-rotted manure.
- TaskSchutz vor Spätfrost
Label
Hill up if late frost is expected
PriorityhighMonths
- 4
ConditionBei FrostgefahrEstimated effortlowNotes
Protects young shoots and tubers from frost damage.
5
- TaskAnhäufeln
Label
Hill up potatoes
PriorityhighMonths
- 5
- 6
ConditionBei ca. 15-20 cm WuchshöheEstimated effortmediumNotes
Promotes tuber formation and protects from light (green potatoes are toxic).
- TaskSchädlings- und Krankheitskontrolle
Label
Check for pests and diseases
PriorityhighMonths
- 5
- 6
- 7
- 8
ConditionRegelmäßigEstimated effortlowNotes
Pay special attention to potato beetles and late blight.
6
- TaskAnhäufeln
Label
Continue to hill up potatoes
PrioritymediumMonths
- 6
ConditionBei starkem WachstumEstimated effortmediumNotes
Ensure tubers are well covered.
- TaskBewässerung
Label
Water during drought
PrioritymediumMonths
- 6
- 7
- 8
ConditionBei TrockenheitEstimated effortlowNotes
Consistent moisture is important for tuber development.
7
- TaskErnte Frühkartoffeln
Label
Harvest early potatoes
PriorityhighMonths
- 7
ConditionJe nach Sorte und ReifeEstimated effortmediumNotes
Dig carefully to avoid damaging remaining plants.
8
- TaskHaupternte
Label
Harvest potatoes
PriorityhighMonths
- 8
- 9
- 10
ConditionJe nach SorteEstimated efforthighNotes
Harvest in dry weather. Allow storage potatoes to dry thoroughly.
9
- TaskErnte späte Sorten
Label
Harvest late potatoes
PriorityhighMonths
- 9
- 10
ConditionVor dem ersten starken FrostEstimated efforthighNotes
The foliage may die back before the tubers are fully mature.
10
- TaskLagerung vorbereiten
Label
Prepare potatoes for storage
PriorityhighMonths
- 10
ConditionNach der ErnteEstimated effortmediumNotes
Allow potatoes to dry well, sort out damaged ones. Store in a dark, cool place.
Cultivation specs
Seed
Spacing
Spacing notes
Adjust plant spacing according to variety and desired tuber size. Row spacing for good ventilation and easy care.
Growth dimensions
Final size notes
Plants form bushy shoots and grow into medium to large specimens.
Temperature
Temperature notes
Prefers cool to moderate temperatures. Extreme heat can affect tuber formation.
Water
Critical water phases
- Tuber formation
- Flowering
Water notes
Consistent soil moisture is crucial. Avoid waterlogging at all costs.
Nutrition
Nutrition notes
Requires abundant nutrients, especially potassium. Balanced fertilization before planting and during growth.
Container
Container notes
Large pots or grow bags with good drainage are necessary. Regular watering and feeding are important.
Support
Support notes
Potato plants grow bushy and do not require additional support.
Cultivation modes
Yield density
Yield notes
Yields vary greatly depending on variety, soil quality, weather, and care.
Site
Location
Sunny to partial shade
Soil type
- loamy
- sandy loam
- 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
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
Recommendations
Incorporate compost or organic fertilizer before planting. Top-dress with a potassium-rich fertilizer during growth if needed.
Fertilizer types
- organic
- potassium-rich
Nutrition notes
Potatoes are heavy feeders and require abundant nutrients, especially potassium for tuber formation.
Cultivation planning
Succession sowing
Bed planning notes
Potatoes are good predecessors for many vegetables. Do not plant after tomatoes, peppers, or eggplants (same family).
Crop rotation
- Potatoes are good predecessors for many vegetables.
- Do not plant after tomatoes, peppers, or eggplants (same family).
- Observe a break of at least 3-4 years between potato crops.
Deficiencies
Potassium deficiency
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
- Ensure adequate potassium supply through organic fertilizers (e.g., wood ash, well-rotted manure) or specific potassium fertilizers.
- Soil analysis to determine exact potassium levels.
- Consistent watering.
Notes
Potatoes are heavy feeders and have a high potassium requirement.
Magnesium deficiency
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
- Apply Epsom salts (magnesium sulfate) as a foliar spray.
- Incorporate magnesium-rich organic materials (e.g., dolomitic lime, if pH allows).
- Soil analysis to check magnesium levels.
Notes
Magnesium deficiency is more common in sandy soils or soils with high potassium content.
Problems
Green tubers
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
- Regularly hill up potato plants during growth to ensure tubers are well covered with soil.
- Harvest in darkness or early morning to minimize light exposure.
- 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
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
- Ensure consistent watering, especially during dry periods.
- Avoid extreme temperature fluctuations.
- Balanced fertilization, particularly adequate potassium supply.
- 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
- Beetles
- Larvae
- Sucking insects
Common disease groups
- Fungal diseases
- Bacterial diseases
- Viral diseases
Prevention principles
- Plant resistant varieties.
- Good crop rotation (at least 3-4 year break).
- Use healthy seed potatoes.
- Create optimal site and soil conditions.
- Ensure adequate nutrient supply.
- Consistent watering, avoid waterlogging.
- Regular monitoring for pests and diseases.
- Encourage beneficial insects.
- 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
Profiles
- Sluglate_blightSeverityhigh
Conditions
- High humidity
- Wet foliage
- Moderate temperatures (15-25°C)
Affected parts
- Leaves
- Stems
- Tubers
Prevention
- Choose resistant varieties
- Good crop rotation
- Adequate plant spacing
- Ensure good soil drainage
- Remove infected plant debris
Organic control
- Copper-based sprays (preventative)
- Plant teas (e.g., horsetail)
- Strengthening plant defenses
- Slugpotato_scabSeveritymedium
Conditions
- Alkaline soil (pH > 6.0)
- Dry periods during tuber formation
- High humus content
Affected parts
- Tubers
Prevention
- Maintain slightly acidic soil (pH 5.0-5.5)
- Consistent watering
- Choose resistant varieties
- Good crop rotation
Organic control
- Acidify soil (e.g., with peat or sulfur-containing fertilizers, use cautiously)
- Soil improvement with compost
- Plant less susceptible varieties
- Slugpotato_beetleSeverityhigh
Conditions
- Warm temperatures
- Lack of natural predators
Affected parts
- Leaves
- Young shoots
Prevention
- Regular monitoring
- Hand-picking
- Encourage beneficial insects
- Good crop rotation
- Intercropping (e.g., with beans)
Organic control
- Biological insecticides (neem oil, Bacillus thuringiensis)
- Collection of egg masses
Diagnostic rules
Symptom
Large, water-soaked spots on leaves that rapidly turn brown and form a white, fuzzy mold on the underside.
Possible causes
- late_blight
First checks
- Check weather conditions (high humidity, wet foliage).
- Examine tubers for browning and rot.
Symptom
Small, round holes or tunnels in the potato tubers.
Possible causes
- wireworm
First checks
- Check the soil for yellowish, hard larvae.
- Note if plants are weakened or wilting.
Symptom
Irregular, corky lesions on the tuber surface.
Possible causes
- potato_scab
First checks
- Measure soil pH (should not exceed 6.0).
- Check if tubers received adequate water during dry periods.
Prevention strategy
Cultural
- Choose robust, disease-resistant varieties.
- Maintain good crop rotation (at least a 3-4 year break).
- Verwenden Sie nur gesundes, zertifiziertes Pflanzgut.
- Provide a well-ventilated site with loose, deep soil.
- Avoid waterlogging through good drainage.
- Keep plants healthy through balanced fertilization and adjusted watering.
- Remove infected plant residues promptly and destroy them.
- Hill up plants regularly to protect tubers from light and promote soil health.
Monitoring
- Regularly inspect plants for signs of pests (e.g. Colorado potato beetle, aphids) and diseases (e.g. late blight).
- Pay particular attention to leaf undersides and the base of stems.
- Check tubers at harvest for damage and signs of disease.
Organic first response
- For pest infestation: hand-pick, use beneficial insects, or apply biological sprays (neem oil, potassium soap).
- If disease is suspected: remove and destroy infected plant parts and apply plant teas preventively (e.g. horsetail) or copper products for late blight.
- 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
- Confusing nutrient deficiencies with diseases.
- Misinterpreting stress symptoms from environmental factors (e.g., drought, heat) as diseases.
- Late detection of problems.
Further steps
- Conduct a soil analysis if necessary.
- Consult with gardening experts or plant health services.
- 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
- Germination
- Sprouting
- Flowering
- Tuber formation
- Maturity
Notes
The vegetation period varies depending on the variety, from about 80 days (early potatoes) to over 140 days (late storage potatoes).
Harvest
- Early potatoes: July to August
- Mid-early potatoes: August to September
- Late potatoes: September to October
Harvest details
Harvest frequency
Single harvest per plant, depending on the variety's maturity time.
Harvest indicators
- Yellowing and dying back of foliage (for late varieties)
- Size of tubers (carefully digging up a sample)
- 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
- Storage potatoes: Dark, cool, and well-ventilated
- 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
- Boiling
- Frying
- Baking
- Mashing
- French fries
- Chips
- 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
- Tuber
Inedible or caution parts
- Green potatoes (contain solanine)
- Sprouts (contain solanine)
- Leaves
- Stems
- 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
- Seed formation is possible in potatoes, but propagation is usually done vegetatively via tubers (seed potatoes).
- Plants grown from seed may differ genetically from the parent plant.
- 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
Notes
Potatoes are not woody plants and therefore have no specific details for woody varieties.
Ecology
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.



