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.

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
Planting and spacing
Temperature and site
Water, nutrients and care
Container, support and growth
Year plan
Bilberry Calendar
Indoor sowing
Seed propagation is uncommon; usually propagated via cuttings or layering.
Direct sowing
Direct outdoor sowing not recommended.
Planting
Spring or autumn are ideal. Potted plants can be planted almost year-round if frost-free.
Harvest
Main harvest time from July to September depending on altitude.
Year plan
- Planting
- 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.

Pruning
Bilberry Pruning
thinning_out
Goal
thinning_out
Pruning timing
winter
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
Good neighbors
RhododendronLingonberry
Avoid
CabbageCabbage
Health
Pests, Diseases
Plant health
FAQ
Why is my bilberry not producing fruit?
Common causes are alkaline soil or a lack of pollinating insects.
Related plants
Heather
Blackcurrant
Highbush Blueberry
Azalea
Ferns
Internal links
Related plants
Sources
Public sources
- Wikidata entity
Wikidata · 2026-05-13
- GBIF species match
GBIF · 2026-05-13
- Deutschsprachige Wikipedia: Heidelbeere
Wikipedia · 2026-05-13
- English Wikipedia: Vaccinium myrtillus
Wikipedia · 2026-05-13
Details
More public plant data
Names
Common
Bilberry
Plural
Bilberries
Scientific synonyms
- Vitis-idaea myrtillus
- Vaccinium myrtillus var. minoriflora
Synonyms
- European blueberry
- Common bilberry
- Blue whortleberry
- Blaeberry
- Wimberry
- Whortleberry
- Fraughan
Common synonyms
- Hurtleberry
- Winberry
Regional names
- Hurt (West Country)
- Urts (Devon)
Historical names
- Whort
Market names
- Wild Blueberries
Misspellings
- Billberry
International names
Fr
- Myrtille
Es
- Arándano
It
- Mirtillo nero
Pl
- Borówka czarna
Ambiguous names
- NameHuckleberryLanguageen
Shared with
- Gaylussacia spp.
- Vaccinium membranaceum
Clarification
In North America, 'Huckleberry' often refers to Gaylussacia species or other Vaccinium relatives.
- NameBlaubeereLanguagede
Shared with
- Vaccinium corymbosum
Clarification
Commonly confused with the highbush blueberry, which has white flesh unlike the wild bilberry.
Search terms
- Bilberry
- European blueberry
- Vaccinium myrtillus
Taxonomy
Clades
- Tracheophyta
- Angiospermae
- Eudicotidae
- Asteridae
Family
Heathers
Related crops
- Vaccinium corymbosum
- Vaccinium vitis-idaea
- Vaccinium uliginosum
- Vaccinium oxycoccos
Classification
Edible parts
- Fruits
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
- 3
- 4
- 10
- 11
Notes
Spring or autumn are ideal. Potted plants can be planted almost year-round if frost-free.
Harvest
Months
- 7
- 8
- 9
Notes
Main harvest time from July to September depending on altitude.
Month tasks
1
Winter pruning during frost-free weather.
2
Check for wildlife browsing damage.
3
Planting time; prepare soil with acidic mulch.
4
Renew mulch layer (bark mulch or pine needles).
5
Water with lime-free water during dry spells.
6
Install bird protection netting.
7
Start of harvest.
8
Main harvest and processing.
9
End of harvest.
10
Prepare for autumn planting.
11
Mulch root area for winter.
12
Dormancy phase.
Month tasks structured
3
- Taskplanting
Label
Planting
PrioritymediumMonths
- 3
- 4
- 10
- 11
Estimated effortmedium
7
- Taskharvesting
Label
Harvesting
PriorityhighMonths
- 7
- 8
- 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
- Taskplanting
Label
New planting
PrioritymediumMonths
- 3
- 4
Notes
Ensure acidic soil pH (4.0-5.0).
7
- Taskharvest
Label
Harvest berries
PriorityhighMonths
- 7
- 8
- 9
Cultivation specs
Seed
Spacing
Spacing notes
Wild bilberries spread via rhizomes.
Growth dimensions
Final size notes
Dwarf shrub, forms dense stands.
Temperature
Temperature notes
Very frost hardy, but blossoms are sensitive to late frosts.
Water
Critical water phases
- Flowering
- Fruit development
Water notes
Consistent moisture is important; use only lime-free water (rainwater).
Nutrition
Nutrition notes
Sensitive to lime and chloride. Use specialized fertilizer for acid-loving plants.
Container
Container notes
Use ericaceous compost; drainage is essential to prevent waterlogging.
Support
Support notes
No support structures required.
Cultivation modes
Yield density
Yield notes
Wild bilberries are less productive than cultivated highbush blueberries.
Site
Exposure
Partial shade to full shade
Wind protection
Sheltered preferred
Soil
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
- Bark mulch
- Pine needles
- Ericaceous fertilizer
Cultivation planning
Succession sowing
Bed planning notes
Perennial crop; choose site carefully as transplanting is difficult.
Crop rotation
Previous crops
- Not relevant for perennial crops; ideally after forest clearing or on heathland.
Subsequent crops
- Other ericaceous plants after soil remediation.
Notes
Bilberries are very long-lived perennial crops and remain in the same location for decades.
Deficiencies
Common
- Slugeisenmangel_chlorose
Name
Iron deficiency (Chlorosis)
Symptoms
Yellow leaves with green veins, usually caused by a soil pH that is too high.
Problems
Environmental
- Slugkalkschaden
Name
Lime sensitivity
Description
Growth stagnation and leaf drop when using tap water.
- Slugspätfrost
Name
Late frost damage
Description
Crop loss due to frozen blossoms in May.
Problem management
Common pest groups
- Caterpillars
- Aphids
- Voles
Common disease groups
- Fungal diseases
- Root rot
Prevention principles
- Strictly maintain acidic soil pH (4.0–5.0).
- Use only rainwater for irrigation.
- 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
Profiles
- SlugmoniliniaSeverityhigh
Conditions
- Wet weather during flowering
Affected parts
- Fruits
- Shoot tips
Prevention
- Remove infected plant parts in winter
- Airy planting site
Organic control
- Complete removal of affected berries
Diagnostic rules
Symptom
Leaves yellow, veins green
Possible causes
- iron_deficiency
- high_ph_value
First checks
- Measure soil pH
- Check irrigation water for lime
Prevention strategy
Cultural
- Site selection in dappled shade
- Consistent soil moisture
Monitoring
- Weekly check for caterpillar damage in spring
Organic first response
- Pruning of diseased shoots back to healthy wood
Notes
Avoiding waterlogging is the best prevention against root rot.
Diagnosis
Phenology
Stages
- Bud break in early spring
- Flowering from April to June
- Fruit set and green ripening
- Fruit maturity in midsummer
- Autumn foliage coloration (red)
- 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
- Uniform dark blue to black coloration
- Berries detach easily from the stem
- Slight give under gentle pressure
Post harvest handling
Berries are very sensitive to bruising; cool or process quickly.
Storage
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
- Freezing
- Preserving (Jam/Jelly)
- Drying
- Juice extraction
Processing use
Primary uses
- Fresh consumption
- Baking ingredient
- Dessert topping
Kitchen usage
Culinary profile
Sweet-tart, aromatic, staining.
Dishes
- Blueberry pancakes
- Muffins
- Berry compote
- Game dishes (as sauce)
Safety and edibility
Edible parts
- Fruits
- Leaves (for tea)
Inedible or caution parts
- Roots
- 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
Methods
- Washing seeds from ripe fruits
- Cold stratification required
Seed saving advanced
Notes
Seed propagation leads to genetic variability; use cuttings for true-to-type propagation.
Varieties
- Slugwildform
Name
Wild Type (Vaccinium myrtillus)
Description
The native wild bilberry with dark flesh and intense aroma.
Characteristics
- Low growth habit
- Staining fruit
- Very frost hardy
Woody crop details
Training systems to research
- Natural dwarf shrub habit
- Ground cover management
Notes
Bilberries grow on their own roots and form underground runners (rhizomes).
Ecology
Biodiversity notes
Important food plant for bumblebees and moth caterpillars like the winter moth.
Practical notes
- 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.



