Cowberry
Vaccinium vitis-idaea · Ericaceae
📷 Jonas Bergsten · Public domain
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around cowberry and prepare for winter.
ID card
- Foliage
- Evergreen, small leathery dark green leaves
- Blooming
- May to June, small pale pink flowers in clusters
- Fruits
- Red tart berries, edible when ripe (August-September)
- Mature size
- 30 cm tall, compact spreading habit
- Growth
- Slow to moderate
- Hardiness
- Very hardy, down to -20 °C
- Origin
- Boreal and mountainous regions of Northern Europe and Asia
- Soil type
- Acidic, well-draining, rich in organic matter
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
Lingonberry appreciates acidic soil (pH 4-5.5) and moisture. Plant in autumn or spring and mulch generously with peat or pine needles.
The common mistake
Ignoring soil acidity: in neutral or chalky soil, the plant yellows and deteriorates slowly, even if it survives a few years.
The pro's trick
Create a small raised bed with enriched peaty soil if your soil isn't acidic.
Seasonal watch
In autumn and winter, check that the mulch doesn't crush the foliage.
Care
Watering
Cranberry appreciates consistent soil moisture, especially during spring growth and establishment. Water regularly during prolonged dry spells, but avoid waterlogging which encourages root diseases. In temperate climates, natural rainfall is often sufficient after establishment.
Light exposure
Plant cranberry in partial shade or dappled light, particularly in warm regions where it will appreciate afternoon shade. It also tolerates direct sun in cool, humid areas. Avoid overly hot and drying exposures.
Soil
The soil must be strictly acidic (pH 4 to 5.5), well-draining and rich in organic matter. Improve the soil before planting with heather soil or peat. Mulching with acidifying organic matter (fallen leaves, shredded bark) maintains moisture and regulates pH.
Pruning
Cranberry requires no regular pruning thanks to its naturally compact and spreading habit. You can prune lightly after flowering to maintain a dense shape, or remove dead or diseased branches in late winter.
Fertilizer
Apply little fertilizer: a modest application of acidic compost in spring is generally sufficient. Avoid alkaline or nitrogen-heavy fertilizers which upset soil pH and reduce fruiting.
Diseases and pests
Cranberry is generally robust. Watch for powdery mildew in cases of stagnant air or excessive shade. Poor drainage can promote root rot. Regularly check that no Phyllobius weevils are damaging the foliage.
Did you know?
The cranberry was traditionally called the 'grape of the North' by Scandinavian and Russian peoples, who preserved it through natural freezing throughout winter to have fresh fruit available. In Finland and Sweden, wild harvesting of it remains an important and festive cultural practice, while folk medicine has attributed beneficial properties to it for centuries, particularly for vitality and eyesight.
Where to buy it
Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.
Add this plant to my garden →Plants from the same family
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- Tree HeathErica arborea
- RhododendronRhododendron ponticum
Tips generated and checked by Viridia — adapt them to your local climate.