HorseradishArmoracia rusticana

Horseradish

Horseradish

1. Nasturtium armoracia
2. Cochlearia armoracia
3. Armoracia austriaca
4. Raphanus rusticanus
5. Cochlearia lancifolia
6. Cochlearia variifolia
7. Rorippa armoracia
8. Armoracia lapathifolia
9. Armoracia rustica
10. Armoracia armoracia
11. Armoracia sativa
12. Raphanis magna
13. Rorippa rusticana
14. Radicula armoracia
15. Crucifera armoracia
16. Cochlearia armoracia var. vulgaris
17. Cochlearia rusticana
18. Cochlearia lapathifolia

1. horseradish plant

1. horseradish plant

1. Kren

1. Horseradish
2. Armoracia rusticana

Mustard family

1. radish
2. cabbage
3. mustard

1. Root

1. Taskharvest_roots

   Label

   Harvest roots

   Prioritymedium

   Months

   1. 1

   Conditionfrostfreier Boden

   Estimated effortlow

   Notes

   Only possible when the ground is not frozen.

1. Taskharvest_roots

   Label

   Harvest roots

   Prioritymedium

   Months

   1. 2

   Conditionfrostfreier Boden

   Estimated effortlow

   Notes

   Only possible when the ground is not frozen.

1. Taskplant_root_cuttings

   Label

   Plant root cuttings

   Priorityhigh

   Months

   1. 3

   Conditionfrostfreier Boden

   Estimated effortmedium

   Notes

   Best results are achieved with 'Fechser' (side roots from the previous year).

2. Taskprepare_soil

   Label

   Prepare soil

   Priorityhigh

   Months

   1. 3

   Conditionvor der Pflanzung

   Estimated effortmedium

   Notes

   Loosen deeply and enrich with compost.

3. Taskharvest_roots

   Label

   Harvest roots

   Prioritymedium

   Months

   1. 3

   Conditionvor dem Neuaustrieb

   Estimated effortlow

   Notes

   Last harvest before strong new growth.

1. Taskplant_root_cuttings

   Label

   Plant root cuttings

   Priorityhigh

   Months

   1. 4

   Conditionfrostfreier Boden

   Estimated effortmedium

   Notes

   Best results are achieved with 'Fechser' (side roots from the previous year).

2. Taskprepare_soil

   Label

   Prepare soil

   Priorityhigh

   Months

   1. 4

   Conditionvor der Pflanzung

   Estimated effortmedium

   Notes

   Loosen deeply and enrich with compost.

1. Taskwater_regularly

   Label

   Water regularly

   Prioritymedium

   Months

   1. 5

   Conditionbei Trockenheit

   Estimated effortlow

   Notes

   Especially important for root development.

2. Taskweed

   Label

   Weed

   Prioritylow

   Months

   1. 5

   Conditionnach Bedarf

   Estimated effortlow

   Notes

   Avoid competition from weeds.

1. Taskwater_regularly

   Label

   Water regularly

   Prioritymedium

   Months

   1. 6

   Conditionbei Trockenheit

   Estimated effortlow

   Notes

   Especially important for root development.

2. Taskweed

   Label

   Weed

   Prioritylow

   Months

   1. 6

   Conditionnach Bedarf

   Estimated effortlow

   Notes

   Avoid competition from weeds.

1. Taskwater_regularly

   Label

   Water regularly

   Prioritymedium

   Months

   1. 7

   Conditionbei Trockenheit

   Estimated effortlow

   Notes

   Especially important for root development.

2. Taskweed

   Label

   Weed

   Prioritylow

   Months

   1. 7

   Conditionnach Bedarf

   Estimated effortlow

   Notes

   Avoid competition from weeds.

1. Taskwater_regularly

   Label

   Water regularly

   Prioritymedium

   Months

   1. 8

   Conditionbei Trockenheit

   Estimated effortlow

   Notes

   Especially important for root development.

2. Taskweed

   Label

   Weed

   Prioritylow

   Months

   1. 8

   Conditionnach Bedarf

   Estimated effortlow

   Notes

   Avoid competition from weeds.

1. Taskwater_regularly

   Label

   Water regularly

   Prioritymedium

   Months

   1. 9

   Conditionbei Trockenheit

   Estimated effortlow

   Notes

   Especially important for root development.

2. Taskweed

   Label

   Weed

   Prioritylow

   Months

   1. 9

   Conditionnach Bedarf

   Estimated effortlow

   Notes

   Avoid competition from weeds.

1. Taskharvest_roots

   Label

   Harvest roots

   Priorityhigh

   Months

   1. 10

   Conditionnach dem ersten Frost

   Estimated effortmedium

   Notes

   Flavor becomes more intense after the first frost.

2. Taskselect_cuttings

   Label

   Select root cuttings for propagation

   Prioritymedium

   Months

   1. 10

   Conditionwährend der Ernte

   Estimated effortlow

   Notes

   Select healthy side roots for planting next spring.

1. Taskharvest_roots

   Label

   Harvest roots

   Priorityhigh

   Months

   1. 11

   Conditionfrostfreier Boden

   Estimated effortmedium

   Notes

   Flavor becomes more intense after the first frost.

2. Taskselect_cuttings

   Label

   Select root cuttings for propagation

   Prioritymedium

   Months

   1. 11

   Conditionwährend der Ernte

   Estimated effortlow

   Notes

   Select healthy side roots for planting next spring.

1. Taskharvest_roots

   Label

   Harvest roots

   Prioritymedium

   Months

   1. 12

   Conditionfrostfreier Boden

   Estimated effortlow

   Notes

   Only possible when the ground is not frozen.

1. Full sun
2. Partial shade

Wind tolerant

A sunny to partial shade location promotes growth. The soil should be deep and well-drained.

1. Deep
2. loose
3. Humus-rich

Horseradish prefers deep, loose, humus-rich soil that retains moisture well but does not become waterlogged. Heavy, compacted soils are unsuitable.

Regularly, especially during dry spells

Sufficient to keep the soil moist, but avoid waterlogging

Ground-level watering

Consistent watering is crucial for the development of juicy roots. Pay particular attention to sufficient moisture during dry periods.

In spring, before planting or at the start of growth, provide with mature compost or well-rotted manure. Additional fertilization is usually not necessary during the growing season.

1. Compost
2. Well-rotted manure
3. Organic complete fertilizer (optional)

Horseradish is a medium to heavy feeder. A good basic supply of organic matter is more important than frequent mineral fertilization.

Horseradish can spread vigorously and outcompete other crops. It is advisable to grow it in a separate bed or with a root barrier to prevent uncontrolled spread.

As a perennial, horseradish often remains in the same location for years. However, when establishing a new bed, a cultivation break of 3-4 years from other brassicas should be observed to prevent the buildup of specific diseases and pests.

1. Slugstickstoffmangel

   Name

   Nitrogen Deficiency

   Symptoms

   1. Leaves light green to yellowish, especially older leaves
   2. Stunted growth
   3. Small leaves

   Severitymedium

   Affected parts

   1. Entire plant
   2. Older leaves

   Conditions

   1. Nutrient-poor soil
   2. Leaching during heavy rain

   Prevention

   1. Regular compost application
   2. Organic fertilization in spring

   Organic control

   1. Liquid fertilizer with nitrogen (e.g., nettle manure)
   2. Additional compost application
2. Slugphosphormangel

   Name

   Phosphorus Deficiency

   Symptoms

   1. Leaves dark green to bluish-purple
   2. Stunted growth
   3. Poor root development

   Severitylow

   Affected parts

   1. Entire plant
   2. Roots

   Conditions

   1. Cold, wet soil
   2. Soil with high pH

   Prevention

   1. Enrich soil with mature compost
   2. Incorporate bone meal or rock dust

   Organic control

   1. Phosphorus-rich organic fertilizers
3. Slugkaliummangel

   Name

   Potassium Deficiency

   Symptoms

   1. Leaf margins yellow and turn brown (necrosis)
   2. Wilting symptoms
   3. Reduced resistance to diseases

   Severitylow

   Affected parts

   1. Older leaves
   2. Leaf margins

   Conditions

   1. Sandy soils
   2. Heavy leaching

   Prevention

   1. Wood ash (use sparingly)
   2. Potassium-rich organic fertilizers

   Organic control

   1. Potassium-rich organic fertilizers

1. Sluginvasive-ausbreitung

   Name

   Invasive Spreading

   Description

   Horseradish can spread very vigorously and uncontrollably in the garden through its roots, outcompeting other crops.

   Causes

   1. Uncontrolled root growth
   2. Remaining root pieces in the soil after harvest

   Prevention

   1. Use a root barrier (at least 60 cm deep)
   2. Regular harvesting and removal of side roots
   3. Growing in large containers

   Management

   1. Consistently remove unwanted plants
   2. Dig out roots deeply
2. Slugfaserige-holzige-wurzeln

   Name

   Fibrous/Woody Roots

   Description

   Roots become fibrous and woody, which impairs quality and flavor.

   Causes

   1. Plants left in the ground too long
   2. Drought stress
   3. Nutrient deficiency
   4. Too heavy, compacted soils

   Prevention

   1. Regular harvesting (do not leave in the same spot for more than 2-3 years)
   2. Consistent water supply
   3. Humus-rich, loose soil

   Management

   1. Improve soil
   2. Rejuvenate or replant plants
3. Slugschiessen

   Name

   Bolting (premature flowering)

   Description

   The plant prematurely forms a flower stalk, which inhibits root development and reduces root quality.

   Causes

   1. Drought stress
   2. Extreme temperature fluctuations
   3. Nutrient deficiency

   Prevention

   1. Consistent water and nutrient supply
   2. Mulching to regulate soil moisture

   Management

   1. Remove flower stalk early
   2. Optimize growing conditions

1. Flea beetles
2. Root flies
3. Slugs/Snails

1. Rust fungi
2. Leaf spot diseases
3. Root rot

1. Site selection and soil preparation (deep, loose, humus-rich)
2. Adequate plant spacing for good air circulation
3. Consistent water and nutrient supply
4. Use of root barriers against uncontrolled spread
5. Regular monitoring for pests and diseases
6. Crop rotation (for the site)

Look for changes in leaves (discoloration, holes, spots), stunted growth, and the condition of roots during harvest. If root rot is suspected, check the soil for waterlogging.

1. Slugmeerrettich-blattkaefer

   Severitymedium

   Conditions

   1. Dry, warm weather

   Affected parts

   1. Leaves

   Prevention

   1. Regular watering
   2. Keep soil moist
   3. Fleece cover for young plants

   Organic control

   1. Remove affected leaves
   2. Neem oil sprays (for severe infestation)
   3. Promote beneficial insects
2. Slugkohlfliege

   Severitymedium

   Conditions

   1. Moist, warm soils

   Affected parts

   1. Roots
   2. Stem base

   Prevention

   1. Insect netting
   2. Companion planting with celery or tomatoes
   3. Regular crop rotation

   Organic control

   1. Remove affected plants
   2. Nematodes (for larval infestation)
3. Slugschnecken

   Severitylow

   Conditions

   1. Damp weather
   2. High humidity

   Affected parts

   1. Leaves
   2. Young shoots

   Prevention

   1. Keep beds clean
   2. Water in the morning
   3. Slug collars or fences

   Organic control

   1. Hand-picking
   2. Slug pellets (iron phosphate)
   3. Beer traps
   4. Promote beneficial predators (hedgehogs, toads)
4. Slugweisser-rost

   Severitymedium

   Conditions

   1. Damp weather
   2. High humidity
   3. Dense plantings

   Affected parts

   1. Leaves
   2. Stems

   Prevention

   1. Adequate plant spacing
   2. Good air circulation
   3. Remove affected leaves
   4. Crop rotation

   Organic control

   1. Remove and destroy affected plant parts
   2. Strengthen plants through good care
5. Slugblattfleckenkrankheit

   Severitylow

   Conditions

   1. Damp weather
   2. Wet leaves for extended periods

   Affected parts

   1. Leaves

   Prevention

   1. Maintain plant spacing
   2. Avoid overhead watering
   3. Remove affected leaves

   Organic control

   1. Remove affected leaves
   2. Plant strengthening agents (e.g., horsetail broth)
6. Slugwurzelfaeule

   Severityhigh

   Conditions

   1. Waterlogging
   2. Heavy, compacted soils
   3. Poor drainage

   Affected parts

   1. Roots
   2. Stem base

   Prevention

   1. Ensure good soil drainage
   2. Loosen soil and enrich with compost
   3. Avoid waterlogging

   Organic control

   1. Remove affected plants
   2. Improve soil
   3. Adjust watering practices

1. Symptom

   Small holes in leaves

   Possible causes

   1. meerrettich-blattkaefer

   First checks

   1. Check plants for small, jumping beetles
2. Symptom

   Wilting leaves despite moist soil

   Possible causes

   1. kohlfliege
   2. wurzelfaeule

   First checks

   1. Check root area for tunnels or rot
   2. Check soil for waterlogging
3. Symptom

   White, pustule-like spots on underside of leaves

   Possible causes

   1. weisser-rost

   First checks

   1. Check humidity and plant spacing
4. Symptom

   Leaves light green to yellowish, especially older leaves

   Possible causes

   1. stickstoffmangel

   First checks

   1. Soil analysis, check last fertilization
5. Symptom

   Fibrous, woody roots

   Possible causes

   1. faserige-holzige-wurzeln

   First checks

   1. Check plant age
   2. Check soil condition and water supply
6. Symptom

   Plant forms flower stalk prematurely

   Possible causes

   1. schiessen

   First checks

   1. Check for drought stress or extreme temperatures

1. Planting of root cuttings (Fechser)
2. Leaf development
3. Root thickening
4. Flowering (rare in cultivation)
5. Dormancy

Horseradish is primarily cultivated for its root. Flowering is irrelevant for root harvest and is often avoided to direct energy into root development.

June - August

White

Small, four-petaled flowers in panicles

Horseradish rarely flowers in garden cultivation, as energy is directed to root development. If it does flower, the blossoms are inconspicuous.

Roots are carefully lifted from the soil with a digging fork or spade. The main root should remain as undamaged as possible.

In late autumn after the first frost (for more intense flavor) or in early spring before new growth. Roots can also remain in the ground over winter and be harvested as needed, as long as the soil is not frozen.

The flavor of horseradish becomes more intense after the first frost. It is advisable not to harvest the entire plant, but to leave some side roots in the ground to ensure regeneration for the following year.

Once annually for the main harvest, or selectively as needed from perennial stands.

1. Leaves dying back in autumn
2. After the first frost
3. Before vigorous new growth in spring

Clean harvested roots of soil, separate fine side roots (Fechser) for propagation, and prepare main roots for storage. Do not wash if they are to be stored.

Store in a cool, dark, and moist place, ideally buried in damp sand or moist soil in a cellar or root cellar. Freezing grated horseradish is also an option.

3-6 months under optimal conditions. Grated and frozen horseradish lasts up to one year.

Roots can also remain in the ground over winter and be harvested fresh as needed, as long as the soil is not frozen. This is the best storage method, as it keeps the horseradish fresh for the longest time.

Root vegetables, cool and moist storage

Fresh roots: 3-6 months; Grated and frozen: up to 12 months.

1. Grate and use fresh
2. Process into horseradish sauce
3. Freeze (grated or in pieces)
4. Pickle in vinegar

1. As a pungent condiment for meat (especially beef, boiled beef, roasts)
2. With fish and smoked salmon
3. In sauces, dips, and dressings
4. In salads (grated)
5. For seasoning eggs and cheese
6. In soups and stews (sparingly)

Pungent, spicy, piquant, with a slightly earthy note. The pungency is volatile and dissipates when cooked.

1. Always grate horseradish fresh, as it quickly loses its pungency.
2. When grating, the fumes can irritate the eyes; best grated outdoors or under a range hood.
3. Temper the pungency with cream, sour cream, or apple sauce.

1. Root (rhizome)
2. Young leaves (sparingly in salads)

1. Older leaves (very pungent and fibrous)
2. Large quantities of leaves

Horseradish contains glucosinolates, which are responsible for its pungency. In large quantities or for sensitive individuals, these can cause gastrointestinal discomfort. The fumes released during grating can irritate eyes and mucous membranes.

Yes, horseradish is traditionally and most commonly consumed raw and freshly grated to enjoy its full pungency.

Horseradish is almost exclusively propagated vegetatively in home gardens using root cuttings (Fechser). Seed production is unreliable, germination rates are often low, and plants grown from seed are rarely true to type. Therefore, seed saving is not practical for home gardeners.

Horseradish is an herbaceous perennial plant and is not cultivated as a woody crop. Therefore, details for woody crops are not applicable.

The inconspicuous flowers of horseradish can attract bees and other insects, but do not significantly contribute to garden biodiversity, as the plant is primarily grown for its root and often does not flower.