Profile

BilberryVaccinium myrtillus

The bilberry is a true treasure of European forests. As a lime-hating dwarf shrub, it demands specific soil pH levels, but rewards the patient gardener with aromatic, deep-purple berries that far surpass cultivated varieties in flavor.

Bilberry (Vaccinium myrtillus): plant portrait for plant portrait - Fruit, Heathers, Harvest Jul, Aug, Sep
Bilberry: plant portrait. harvest: Jul, Aug, Sep.

Quick profile

Key data

Planting

Mar, Apr, Oct, Nov

Harvest

Jul, Aug, Sep

Water

high

Good neighbors

RhododendronLingonberry

Avoid

CabbageCabbage

Growing data

Bilberry Growing data

Seed depth

0 - 0.5 cm

Plant spacing

40 - 60 cm

Row spacing

80 - 100 cm

Germination temp

15 - 20 °C

Sowing and germination

Seed depth0 - 0.5 cm
Germination temp15 - 20 °C
Germination time28 - 90 days
Seed viability1 - 2 years
Light germinatorYes
Dark germinatorNo
Cold germinatorYes
Stratification neededYes
Pre-soaking recommendedNo
Direct sowing possibleNo
Pre-culture recommendedYes

Planting and spacing

Plant spacing40 - 60 cm
Row spacing80 - 100 cm
Plants per m²2 - 4 per m²
Bed widthfrom 60 cm
Spacing1

Temperature and site

Soil temperature10 - 18 °C
Growing temperaturefrom 5 °C
Optimal temperature15 - 22 °C
Frost sensitiveNo
Late frost sensitiveYes
Heat tolerancelow
Cold tolerancevery_high

Water, nutrients and care

Waterhigh
Critical water phasesFlowering, Fruit development
Watering methodDrip irrigation or base watering
Droughthigh
Waterlogging sensitiveYes
Mulching recommendedYes
Nutrient needlight_feeder
Compost recommendedNo
Fertilizer sensitivityhigh

Container, support and growth

Container suitableYes
Pot sizeVolume: from 15 l; Recommended: from 30 l; Diameter: from 40 cm; Depth: from 30 cm
SupportNo
Height20 - 50 cm
Width30 - 60 cm
Root depth10 - 20 cm
Root spread30 - 100 cm
Yield0.1 - 0.4 kg

Year plan

Bilberry Calendar

All plants
Indoor sowingDirect sowingPlantingHarvest

Indoor sowing

No data

Seed propagation is uncommon; usually propagated via cuttings or layering.

Direct sowing

No data

Direct outdoor sowing not recommended.

Planting

MarAprOctNov

Spring or autumn are ideal. Potted plants can be planted almost year-round if frost-free.

Harvest

JulAugSep

Main harvest time from July to September depending on altitude.

Year plan
  1. Planting
  2. Harvesting

Growing

Bilberry Site, soil and care

Spacing

40 - 60 cm

Storage

Storage temperature c: 2, Storage humidity: high

  • Type: soil_tip, Content: If soil is alkaline, grow bilberries in containers with ericaceous compost.
Cultivation timeline for Bilberry (Vaccinium myrtillus) with sowing, planting, care, and harvest months
Bilberry: cultivation timeline. calendar: Mar, Apr, Jul, Aug, Sep, Oct, Nov.

Pruning

Bilberry Pruning

thinning_out

Goal

thinning_out

Pruning timing

winter

JanFebMar

Renewal pruning Prune during dormancy before bud break in frost-free weather.

Remove

  • Dead or diseased branches
  • Shoots older than 5-6 years (recognizable by grey bark)
  • Weak, spindly ground shoots

Preserve

  • Young, vigorous shoots with green bark
  • Fruit-bearing wood from the previous year

Avoid

  • Radical clear-cutting of the entire patch
  • Pruning during the flowering period

Tools and hygiene

Use sharp, clean shears to avoid crushing the delicate stems.

Companion guide

Bilberry Companion guide

Companion guide

Good neighbors

RhododendronLingonberry

Avoid

CabbageCabbage

Health

Pests, Diseases

FAQ

Why is my bilberry not producing fruit?

Common causes are alkaline soil or a lack of pollinating insects.

Related plants

Heather

Same family

Blackcurrant

Same crop group

Highbush Blueberry

Shared diseases

Azalea

Similar nutrient needs

Ferns

Similar water needs

Sources

Public sources

  1. Wikidata entity

    Wikidata · 2026-05-13

  2. GBIF species match

    GBIF · 2026-05-13

  3. Deutschsprachige Wikipedia: Heidelbeere

    Wikipedia · 2026-05-13

  4. English Wikipedia: Vaccinium myrtillus

    Wikipedia · 2026-05-13

Details

More public plant data

Names
Common

Bilberry

Plural

Bilberries

BotanicalVaccinium myrtillus
Botanical authorL.
Scientific synonyms
  1. Vitis-idaea myrtillus
  2. Vaccinium myrtillus var. minoriflora
Synonyms
  1. European blueberry
  2. Common bilberry
  3. Blue whortleberry
  4. Blaeberry
  5. Wimberry
  6. Whortleberry
  7. Fraughan
Common synonyms
  1. Hurtleberry
  2. Winberry
Regional names
  1. Hurt (West Country)
  2. Urts (Devon)
Historical names
  1. Whort
Market names
  1. Wild Blueberries
Misspellings
  1. Billberry
International names
Fr
  1. Myrtille
Es
  1. Arándano
It
  1. Mirtillo nero
Pl
  1. Borówka czarna
Ambiguous names
  1. NameHuckleberry
    Languageen
    Shared with
    1. Gaylussacia spp.
    2. Vaccinium membranaceum
    Clarification

    In North America, 'Huckleberry' often refers to Gaylussacia species or other Vaccinium relatives.

  2. NameBlaubeere
    Languagede
    Shared with
    1. Vaccinium corymbosum
    Clarification

    Commonly confused with the highbush blueberry, which has white flesh unlike the wild bilberry.

Search terms
  1. Bilberry
  2. European blueberry
  3. Vaccinium myrtillus
Taxonomy
KingdomPlantae
Clades
  1. Tracheophyta
  2. Angiospermae
  3. Eudicotidae
  4. Asteridae
OrderEricales
Family botanicalEricaceae
Family

Heathers

Family idericaceae
SubfamilyVaccinioideae
TribeVaccinieae
GenusVaccinium
SpeciesVaccinium myrtillus
Hybrid statusnot_hybrid
Related crops
  1. Vaccinium corymbosum
  2. Vaccinium vitis-idaea
  3. Vaccinium uliginosum
  4. Vaccinium oxycoccos
Classification
Main groupfruit
Sub groupsoft_fruit
Crop groupberries
Life cyclePerennial
Perennialyes
Woodyyes
Treeno
Shrubyes
Edible parts
  1. Fruits
Nutrient grouplow
Calendar
Sowing indoor
Notes

Seed propagation is uncommon; usually propagated via cuttings or layering.

Sowing outdoor
Notes

Direct outdoor sowing not recommended.

Planting out
Months
  1. 3
  2. 4
  3. 10
  4. 11
Earliest month3
Latest month11
Notes

Spring or autumn are ideal. Potted plants can be planted almost year-round if frost-free.

Harvest
Months
  1. 7
  2. 8
  3. 9
Earliest month7
Latest month9
Notes

Main harvest time from July to September depending on altitude.

Month tasks
1
  1. Winter pruning during frost-free weather.

2
  1. Check for wildlife browsing damage.

3
  1. Planting time; prepare soil with acidic mulch.

4
  1. Renew mulch layer (bark mulch or pine needles).

5
  1. Water with lime-free water during dry spells.

6
  1. Install bird protection netting.

7
  1. Start of harvest.

8
  1. Main harvest and processing.

9
  1. End of harvest.

10
  1. Prepare for autumn planting.

11
  1. Mulch root area for winter.

12
  1. Dormancy phase.

Month tasks structured
3
  1. Taskplanting
    Label

    Planting

    Prioritymedium
    Months
    1. 3
    2. 4
    3. 10
    4. 11
    Estimated effortmedium
7
  1. Taskharvesting
    Label

    Harvesting

    Priorityhigh
    Months
    1. 7
    2. 8
    3. 9
    Estimated effortmedium
Book content
Overview

The bilberry is a true treasure of European forests. As a lime-hating dwarf shrub, it demands specific soil pH levels, but rewards the patient gardener with aromatic, deep-purple berries that far surpass cultivated varieties in flavor.

Structured month tasks
3
  1. Taskplanting
    Label

    New planting

    Prioritymedium
    Months
    1. 3
    2. 4
    Notes

    Ensure acidic soil pH (4.0-5.0).

7
  1. Taskharvest
    Label

    Harvest berries

    Priorityhigh
    Months
    1. 7
    2. 8
    3. 9
Cultivation specs
Seed
Seed depth cm min.0
Seed depth cm max.0.5
Light germinatoryes
Dark germinatorno
Cold germinatoryes
Stratification neededyes
Pre soaking recommendedno
Germination temperature c min.15
Germination temperature c max.20
Germination days min.28
Germination days max.90
Seed lifespan years min.1
Seed lifespan years max.2
Direct sowing possibleno
Pre culture recommendedyes
Spacing
Plant spacing cm min.40
Plant spacing cm max.60
Row spacing cm min.80
Row spacing cm max.100
Recommended density per sqm min.2
Recommended density per sqm max.4
Min. bed width60 cm
Square foot gardening spacing1
Spacing notes

Wild bilberries spread via rhizomes.

Growth dimensions
Height cm min.20
Height cm max.50
Width cm min.30
Width cm max.60
Root depth cm min.10
Root depth cm max.20
Root spread cm min.30
Root spread cm max.100
Growth speedslow
Final size notes

Dwarf shrub, forms dense stands.

Temperature
Min. growing temperature5 °C
Optimal temperature c min.15
Optimal temperature c max.22
Max. heat tolerance30 °C
Soil temperature for sowing c min.10
Soil temperature for sowing c optimal18
Frost sensitiveno
Late frost sensitiveyes
Heat tolerancelow
Cold tolerancevery_high
Temperature notes

Very frost hardy, but blossoms are sensitive to late frosts.

Water
Water needhigh
Critical water phases
  1. Flowering
  2. Fruit development
Drought tolerantno
Drought sensitivityhigh
Waterlogging sensitiveyes
Mulching recommendedyes
Water notes

Consistent moisture is important; use only lime-free water (rainwater).

Nutrition
Nutrient grouplight_feeder
Heavy feederno
Medium feederno
Light feederyes
Nitrogen needlow
Phosphorus needlow
Potassium needlow
Calcium needvery_low
Magnesium needmedium
Compost recommendedno
Mulching recommendedyes
Fertilizer sensitivityhigh
Nutrition notes

Sensitive to lime and chloride. Use specialized fertilizer for acid-loving plants.

Container
Container suitableyes
Min. pot volume15 l
Recommended pot volume30 l
Min. pot depth30 cm
Min. pot diameter40 cm
Plants per container min.1
Plants per container max.1
Drainage requiredyes
Repotting neededyes
Container notes

Use ericaceous compost; drainage is essential to prevent waterlogging.

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

No support structures required.

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.0.1
Yield per plant max.0.4
Yield unitkg
Yield per sqm min.0.4
Yield per sqm max.1.5
Yield reliabilitymedium
Yield notes

Wild bilberries are less productive than cultivated highbush blueberries.

Site
Exposure

Partial shade to full shade

Wind protection

Sheltered preferred

Climate zoneHardy (USDA 3-7)
Soil
PH min.3.5
PH max.5.2
Type

Humus-rich, sandy, acidic

Drainage

Well-drained but moisture-retentive

Watering
Frequency

Regular, soil must never dry out completely

Water type

Rainwater (lime-free)

Nutrition
Strategy

Organic fertilization in spring

Recommended fertilizers
  1. Bark mulch
  2. Pine needles
  3. Ericaceous fertilizer
Cultivation planning
Succession sowing
Possibleno
Bed planning notes

Perennial crop; choose site carefully as transplanting is difficult.

Interplanting potentialExcellent under taller acid-loving shrubs like Rhododendrons.
Mechanization relevancelow
Crop rotation
Years between replanting20
Previous crops
  1. Not relevant for perennial crops; ideally after forest clearing or on heathland.
Subsequent crops
  1. Other ericaceous plants after soil remediation.
Notes

Bilberries are very long-lived perennial crops and remain in the same location for decades.

Deficiencies
Common
  1. Slugeisenmangel_chlorose
    Name

    Iron deficiency (Chlorosis)

    Symptoms

    Yellow leaves with green veins, usually caused by a soil pH that is too high.

Problems
Environmental
  1. Slugkalkschaden
    Name

    Lime sensitivity

    Description

    Growth stagnation and leaf drop when using tap water.

  2. Slugspätfrost
    Name

    Late frost damage

    Description

    Crop loss due to frozen blossoms in May.

Problem management
Common pest groups
  1. Caterpillars
  2. Aphids
  3. Voles
Common disease groups
  1. Fungal diseases
  2. Root rot
Prevention principles
  1. Strictly maintain acidic soil pH (4.0–5.0).
  2. Use only rainwater for irrigation.
  3. Regularly mulch with acidic material (pine needles).
Diagnosis notes

Yellow leaves in bilberries almost always indicate an excessively high soil pH or lime in the irrigation water.

Disease graph
ScopeVaccinium myrtillus global
Profiles
  1. Slugmonilinia
    Severityhigh
    Conditions
    1. Wet weather during flowering
    Affected parts
    1. Fruits
    2. Shoot tips
    Prevention
    1. Remove infected plant parts in winter
    2. Airy planting site
    Organic control
    1. Complete removal of affected berries
Diagnostic rules
  1. Symptom

    Leaves yellow, veins green

    Possible causes
    1. iron_deficiency
    2. high_ph_value
    First checks
    1. Measure soil pH
    2. Check irrigation water for lime
Prevention strategy
Cultural
  1. Site selection in dappled shade
  2. Consistent soil moisture
Monitoring
  1. Weekly check for caterpillar damage in spring
Organic first response
  1. Pruning of diseased shoots back to healthy wood
Notes

Avoiding waterlogging is the best prevention against root rot.

Diagnosis
Phenology
Stages
  1. Bud break in early spring
  2. Flowering from April to June
  3. Fruit set and green ripening
  4. Fruit maturity in midsummer
  5. Autumn foliage coloration (red)
  6. Winter dormancy (deciduous)
Notes

Budding often occurs alongside flowering; leaves turn a vibrant red in autumn before dropping.

Flowering pollination
Flowering period

April to June

Flower color

Greenish-white to pink

Flower type

Bell-shaped, solitary in leaf axils

Harvest
Harvest period

July to September

Yield estimate

0.1 to 0.4 kg per plant

Harvest details
Harvest frequency

Multiple pickings, as berries ripen successively.

Harvest indicators
  1. Uniform dark blue to black coloration
  2. Berries detach easily from the stem
  3. Slight give under gentle pressure
Post harvest handling

Berries are very sensitive to bruising; cool or process quickly.

Storage
Storage temperature2 °C
Storage humidityhigh
Storage details
General storage category

Short-term fresh storage

Storage life

Fresh 2-5 days in the refrigerator; frozen up to 12 months.

Processing options
  1. Freezing
  2. Preserving (Jam/Jelly)
  3. Drying
  4. Juice extraction
Processing use
Primary uses
  1. Fresh consumption
  2. Baking ingredient
  3. Dessert topping
Kitchen usage
Culinary profile

Sweet-tart, aromatic, staining.

Dishes
  1. Blueberry pancakes
  2. Muffins
  3. Berry compote
  4. Game dishes (as sauce)
Safety and edibility
Edible parts
  1. Fruits
  2. Leaves (for tea)
Inedible or caution parts
  1. Roots
  2. Woody stems
Toxicity notes

No known toxicity; when foraging wild, be aware of Echinococcus risk (wash thoroughly!).

Raw consumption

Very suitable; stains mouth and teeth intensely blue.

Seed saving
Difficultyhigh
Methods
  1. Washing seeds from ripe fruits
  2. Cold stratification required
Seed saving advanced
Isolation distance500 m
Seed longevity years2
Notes

Seed propagation leads to genetic variability; use cuttings for true-to-type propagation.

Varieties
  1. Slugwildform
    Name

    Wild Type (Vaccinium myrtillus)

    Description

    The native wild bilberry with dark flesh and intense aroma.

    Characteristics
    1. Low growth habit
    2. Staining fruit
    3. Very frost hardy
Woody crop details
Training systems to research
  1. Natural dwarf shrub habit
  2. Ground cover management
Renewal pruning relevancehigh
Notes

Bilberries grow on their own roots and form underground runners (rhizomes).

Ecology
Pollinator valuehigh
Wildlife valuehigh
Biodiversity notes

Important food plant for bumblebees and moth caterpillars like the winter moth.

Practical notes
  1. Typesoil_tip
    Content

    If soil is alkaline, grow bilberries in containers with ericaceous compost.

Seasonal content
Spring

Check mulch layer and replenish if necessary.

Summer

Main harvest time and watering during drought.

Autumn

Enjoy foliage color; time for new plantings.

Winter

Pruning of old shoots on frost-free days.