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Honeyberry Diana - Lonicera caerulea var. kamtschatica

Lonicera caerulea var. kamtschatica Diana
Honeyberry, Haskap, Blue Honeysuckle

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More information

This Russian selection produces large, cylindrical, blue berries with an open neck-shaped top. They contain juicy and fragrant flesh, with a deliciously sweet and mild taste, rich in vitamins B and C as well as antioxidants. This late variety offers a plentiful harvest in June-July. This fruit bush with decorative foliage is best planted between October and March.
Flavour
Sugary
Height at maturity
1.60 m
Spread at maturity
1.20 m
Exposure
Sun, Partial shade
Self-fertilising
Best planting time March, October
Recommended planting time February to April, September to November
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Flowering time March to April
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Harvest time June to July
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Description

Lonicera caerulea var. kamtschatica 'Diana' is a honeysuckle with edible fruits, one of the most popular late varieties. Its flowering in April is followed by  fruiting in June, extending until July. One of the remarkable characteristics of this blue honeysuckle is the large size of its fruits, each weighing 1.5 g. The chalky, blue berries have a sweet and slightly acidic flavour, providing a pleasant sensation in the mouth. Its exceptional cold resistance and high productivity make it an ideal choice. This shrub can be grown in the garden or in a pot on a terrace. It is easy to maintain and disease-resistant, perfect for forming a small fruit hedge, along with other fruit-bearing shrubs. Although capable of self-pollination, planting multiple varieties promotes optimal cross-pollination and ensures abundant harvests in the long term.

Lonicera caerulea var. kamtschatica, also known as Blue Honeysuckle, Honey Berry, May Berry, Siberian Blueberry, Edible Honeysuckle, Maibeere, or Haskap, is a shrub species belonging to the Caprifoliaceae family, just like other honeysuckles. Native to Eastern Europe, particularly Russia and Siberian Asia, from the Kamchatka region to Sakhalin Island, it has been consumed by indigenous populations for a long time. This resilient shrub can withstand temperatures as low as -40°C, although its flowers freeze below -7°C, making it a useful choice for high-altitude gardens.

The 'Diane' variety is a solid and robust selection of Russian origin. It forms a bushy shrub with a dense and rounded crown, reaching 1.60 m in height and spreading 1.20 m wide. The foliage is deciduous, composed of opposite, ovate, dark green leaves with a slightly grey-blue hue, measuring 3 to 8 cm long. Flowering occurs from March, with tubular, yellowish-green and quite inconspicuous flowers blooming in pairs, loved by bees. Fruit production mainly occurs on one- and two-year-old branches. The shrub becomes covered in oval berries with an uneven surface, covered in small bumps, with an open apex, chalky and blue, measuring 1.5 to 2 cm long and 0.7 to 0.8 cm in diameter, weighing approximately 1.5 grams, with a honey-like scent. The berries contain tiny seeds that are not noticeable when consumed. Ripening between mid-June and mid-July, the drupe is filled with a yellowish-green, juicy, sweet, and slightly acidic pulp, similar to a blueberry in both flavour and appearance.

The berries should be picked as they mature when their flesh turns red. A Haskap bush can produce approximately 2.5 to 4 kg of fruit per plant, depending on the age and cultivation conditions of the plant. To improve fruiting, it is best to plant at least two bushes. Varieties such as 'Regina', 'Morena', 'Nimfa', 'Fialka', and 'Honey Bee' can be used. Being nectar-rich, the flowers will attract bees for pollination. The fruits are rich in vitamins B and C, fibre, minerals, and antioxidants.

In the kitchen: Once picked, the berries can be refrigerated for only 2 to 3 days, preferably in the vegetable drawer. The fruits of the 'Diana' Haskap can be enjoyed fresh, and for added indulgence, they can be sprinkled with a little granulated sugar. They are excellent for making jellies or jams, and can also be used in fruit salads, muffins or smoothies and pies... as well as in very fruity, slightly acidic juices. When dried, the berries retain all their nutritional value. To extend the uses, fruits can be easily frozen.

Transform your garden into a gourmet paradise with May berries. To create a rustic or edible hedge, choose a sunny location, protected from excessive heat, in moist, fertile, and non-calcareous soil. Combine this 'Diana' variety with other delights such as raspberries, red currants, blackberries, blueberries, or even goji berries (Lycium barbarum) for flavourful harvests.

Plant habit

Height at maturity 1.60 m
Spread at maturity 1.20 m
Growth rate normal

Fruit

Fruit colour blue
Fruit diameter 8 mm
Flavour Sugary
Use Table, Jam, Patisserie, Alcohol
Harvest time June to July

Flowering

Flower colour yellow
Flowering time March to April
Inflorescence Solitary
Flower size 1 cm
Fragrance slightly scented
Bee-friendly Attracts pollinators
Flowering description Subtle and moderately fragrant flowering. In March, small cream-white flowers, tubular at the base, bloom in pairs on the shoots.

Foliage

Foliage persistence Deciduous
Foliage colour dark green

Botanical data

Genus

Lonicera

Species

caerulea var. kamtschatica

Cultivar

Diana

Family

Caprifoliaceae

Other common names

Honeyberry, Haskap, Blue Honeysuckle

Origin

Cultivar or hybrid

Product reference222510

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Planting and care

Plant Lonicera caerulea var. kamtschatica 'Diane' in moist and humid soil, it dislikes dry and chalky soils (optimal pH of 5 to 7). Choose a sunny or partially shaded exposure in warm regions. It appears to be adapted to a wide range of soil textures, from sandy to clay soils but prefers soils rich in organic matter that remain moist in summer. Conversely, it stagnates and eventually declines in shallow and dry soils. Planting should be done in autumn or spring, outside of the freezing period. Space the plants 0.80 to 1.20 m apart.

Soak the root ball for a few moments before planting. Apply compost at planting time and once a year. Since the May berry dislikes dry soils, add a mixture of water and compost at the bottom of the planting hole. Place the plant, cover with soil, and depress the soil to form a small watering basin. Water.

During summer, water regularly during dry periods, and apply a mulch at the base to retain moisture. In case of aphid attack, spray with black soap.

Container cultivation is possible, but be vigilant in maintaining a good level of humidity through regular watering.

Planting period

Best planting time March, October
Recommended planting time February to April, September to November

Intended location

Suitable for Meadow, Woodland edge
Type of use Border, Free-standing, Container, Hedge, Orchard
Hardiness Hardy down to -40°C (USDA zone 3) Show map
Ease of cultivation Beginner
Planting density 1 per m2
Exposure Sun, Partial shade
Soil pH Acidic, Neutral
Soil type Clayey (heavy), Silty-loamy (rich and light), well-draining and fertile

Care

Pruning instructions Prune from the 3rd year onwards, removing dead wood, opening up the centre of the bush to promote air and light circulation, and restoring a nice compact shape. Prune just after fruit harvest or at the end of winter, before the start of new growth.
Pruning Pruning recommended once a year
Pruning time March, August
Soil moisture Wet
Disease resistance Very good
Overwinter Can be left in the ground

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