In short
- Fruits earliest of all berry shrubs — harvested as soon as May, before strawberries.
- Self-sterile: at least two different, simultaneously flowering cultivars must be planted.
- Extremely frost-hardy — the shrub withstands severe frosts, and the flowers tolerate spring frosts down to about -7 degrees C.
- Far less demanding about soil than blueberry — it grows well in substrate with a pH from 5 to 7.
- The fruits have a very high content of anthocyanins and vitamin C.
- Its compact habit suits small gardens and cultivation in large containers well.
Botanical data
- Family
- Caprifoliaceae (Caprifoliaceae)
- Height
- 1.2–2 m
- Width
- 1–1.5 m
- Habit
- Upright
- Growth rate
- Moderate
- Position
- Full sun, Partial shade
- Soil
- Humus-rich, Loamy
- pH reaction
- pH 5–7
- Moisture
- Moist, Moderate
- Bloom
- March–April
- Hardiness
- USDA 3a–7b
- Propagation
- From cuttings, By layering
Characteristics
The honeyberry forms a compact, upright shrub usually reaching 1.2-2 m in height and a similar width. The shoots are slender, with characteristically peeling bark, and the leaves are oval-oblong, matte green and arranged in opposite pairs. In early spring, often as early as March, small, bell-shaped, pale-yellow flowers develop, growing in pairs in the leaf axils. The fruit is an elongated, cylindrical berry with a deep blue-violet skin covered by a waxy bloom, 1.5-3 cm long. The flesh is dark and juicy, with a sweet-sour flavour reminiscent of bilberry, blueberry and currant all at once. The fruits ripen exceptionally early — the first harvest falls in May, several weeks before strawberries. A distinguishing feature of the species is self-sterility: a single shrub flowers abundantly but will not set fruit unless another, genetically different cultivar flowering at the same time grows nearby.
Popular cultivars
- ‘Wojtek’
- Polish cultivar with large, sweet-sour fruits and vigorous growth; good for home plantings.
- ‘Aurora’
- Canadian cultivar from the University of Saskatchewan, with large, sweet fruits; also valued as a productive pollinator.
- ‘Borealis’
- Canadian cultivar with exceptionally large, aromatic fruits; requires a pollinator flowering at the same time.
- ‘Tundra’
- Canadian cultivar with firm fruits that stand up well to harvest and transport; a frequent pollinating partner for Borealis.
- ‘Honey Bee’
- A cultivar of vigorous growth and abundant flowering, grown mainly as a pollinator for fruiting cultivars.
Growing and care
Watering
The root system is shallow, so during hot spells and while the fruit is setting the substrate should remain evenly moist. The shrub tolerates prolonged summer drying-out poorly, but it does not tolerate standing water either.
Fertilizing
The plant is undemanding — an excess of nitrogen worsens fruiting in favour of shoot growth.
Planting
A sunny or lightly shaded position, humus-rich, permeable, moderately moist soil. It is essential to plant at least two different, simultaneously flowering cultivars — the species is self-sterile and a single shrub will not set fruit.
Pruning
By thinning out — cut out the oldest shoots at the base, which crop ever more weakly with age, to encourage the shrub to send out young, well-fruiting growth.
Companion plants
Good companions
Gatunek jest samopłonny — do zawiązania owoców niezbędna jest inna, jednocześnie kwitnąca odmiana zapewniająca zapylenie krzyżowe.
Zbliżone wymagania: chłodne, wilgotne stanowisko i lekko kwaśne, próchniczne podłoże — dobrze komponują się w nasadzeniach owocowych.
Bad companions
Wymagają suchej, przepuszczalnej i ciepłej gleby — przeciwieństwo wilgotnego, chłodnego stanowiska preferowanego przez jagodę kamczacką.
The evidence level indicates whether the relationship is backed by research, observation, or gardening tradition.
Toxicity
| For whom | Level | Notes |
|---|---|---|
| Humans | None | Fruits fully edible, prized for their exceptionally high content of anthocyanins and vitamin C. |
| Dogs | None | — |
| Cats | None | — |
History and origin
The honeyberry originates from the cool, moist regions of the northern hemisphere — Siberia, Kamchatka, the Kuril Islands and the Japanese island of Hokkaido, where it has been gathered from the wild for centuries. The first breeding programmes began in Russia as early as the mid-twentieth century, producing cultivars adapted to the harsh continental climate. Work on the species was carried out in parallel in Japan, where the plant is known by the Ainu name "haskap". A breakthrough for commercial cultivation came from research at the University of Saskatchewan in Canada, the source of the large- and sweet-fruited cultivars popular today. In Poland the honeyberry is among the fastest-growing-in-popularity fruit shrubs of recent years — valued for its extreme frost-hardiness, modest requirements and the earliest harvest of the season.
Uses
The honeyberry does well in fruit gardens, especially in cool regions and in positions where less hardy shrubs fail. Its compact habit allows it to be grown in small gardens, in fruit beds and also in large containers on a terrace. It is essential to plant several different cultivars to ensure cross-pollination. The fruits are eaten raw, frozen and processed into preserves, juices and jams; owing to their high content of anthocyanins and vitamin C they are counted among health-promoting fruits. The early, abundant flowering makes the shrub a valuable early-spring source of forage for bees and bumblebees.
Trivia
- The name "haskap" comes from the Ainu language of Hokkaido and is sometimes translated as the fruit of long life and good eyesight.
- It is one of the earliest-fruiting shrubs in the garden — ripe berries are picked even before the first strawberries.
- The flowers tolerate spring frosts down to about -7 degrees C, so early flowering rarely ends in loss of the crop.
- The fruits are fully ripe only once the flesh has turned violet on the inside — the blue skin alone appears a few days earlier.
Frequently asked questions
Why does the honeyberry not fruit despite flowering abundantly?
The species is self-sterile — a single shrub will not set fruit. At least two different, simultaneously flowering cultivars must be planted for cross-pollination to occur.
When are honeyberry fruits harvested?
The fruits ripen earliest of all berry shrubs — the harvest usually falls in May, still before strawberries. It is best to pick them only once the flesh is violet on the inside too, not just the skin.
Does the honeyberry require acidic soil like blueberry?
No — this is one of its great advantages. It grows well in substrate with a pH from 5 to 7, is far less demanding about soil than the highbush blueberry and does not need any special acidification of the substrate.
How frost-hardy is the honeyberry?
It is one of the most frost-hardy fruit shrubs — it overwinters safely in the harshest regions of Poland, and its early flowers tolerate frosts down to about -7 degrees C.
Can the honeyberry be grown in a container?
Yes, its compact habit makes it well suited to large containers on a terrace or balcony. Even then, however, a second cultivar for pollination and regular watering during hot spells must be provided.
Sources
- USDA PLANTS Database — Lonicera caeruleaDatabase (GBIF, POWO…)
- Missouri Botanical Garden — Lonicera caeruleaInstitution / botanical garden
- University of Saskatchewan — Haskap (Lonicera caerulea) breeding programInstitution / botanical garden
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