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Ribes sanguineum Johannie Whitenow! - Flowering Currant

Ribes sanguineum Johannie Whitenow!
Flowering Currant, Red-flowering Currant

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Deciduous bush with abundant spring flowering in pendulous clusters of small white flowers, appearing at the same time as the foliage. It is a hardy plant that is easy to grow and adapts to most soils, including limestone. The flowering currant is an excellent vibrant hedge bush that is also used in mixed borders.
Flower size
7 cm
Height at maturity
1.80 m
Spread at maturity
1.80 m
Exposure
Sun, Partial shade
Hardiness
Hardy down to -20°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time February to May, October to November
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Flowering time April to May
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Description

Ribes sanguineum 'Johannie Whitenow!' is a vigorous and floriferous cultivar of white- flowered currant bush. This deciduous shrub blooms in early spring, at the same time as its light green foliage develops. Its leaves emit a blackcurrant aroma when crushed, which is why it is also known as "False Blackcurrant". It is a low-maintenance variety that tolerates most soils that are not too dry. It can be integrated into a flowering hedge or a shrub border.

Ribes sanguineum 'Johannie Whitenow!' is a deciduous shrub belonging to the Grossulariaceae family. It is a horticultural selection of Ribes sanguineum, a species native to the United States. 'Johannie Whitenow!' forms a spreading shrub that reaches approximately 1.80m in all directions. Its branches are quite slender and have a beautiful brown colour, ranging from mahogany to reddish. In April, earlier or later depending on the climate, the leaves and flowers appear simultaneously. The leaves, with 5 shallow lobes and toothed edges, measure between 5 and 10cm in length. They are initially very light green and darken as the season progresses.
The inflorescences are pendulous clusters, 6 to 8cm long, composed of small flowers with five pure white petals. Distributed along the length of the branches, the flowers bloom for 3 to 4 weeks. After pollination, small round black fruits covered in bloom form, measuring 7 to 8mm in diameter. The deciduous foliage falls in autumn. The white-flowered currant bush is hardy to approximately -20°C.

The White-Flowered Currant 'Johannie Whitenow!' can be planted alongside weigelas, Forsythias, Hibiscus syriacus, and Japanese quinces in a small hedge that will be in bloom from March to October. All these shrubs are hardy and low-maintenance. In a large border, it can be paired with the botanical rose Rosa glauca or other shrub roses like 'Frisson Frais' or 'Annelies'.

Plant habit

Height at maturity 1.80 m
Spread at maturity 1.80 m
Habit Irregular, bushy
Growth rate normal

Flowering

Flower colour white
Flowering time April to May
Inflorescence Cluster
Flower size 7 cm
Fragrance slightly scented
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms
Fruit colour black

Foliage

Foliage persistence Deciduous
Foliage colour green
Aromatic? Fragrant foliage when creased

Botanical data

Genus

Ribes

Species

sanguineum

Cultivar

Johannie Whitenow!

Family

Grossulariaceae

Other common names

Flowering Currant, Red-flowering Currant

Origin

Cultivar or hybrid

Product reference20884

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Planting and care

Plant the Flowering Currant 'Johannie Whitenow!' in ordinary, deep, rich soil that does not dry out too much in summer. This bush will thrive in partial shade or full sun, but in a non-scorching exposure. Soak the root ball in a bucket for fifteen minutes while you dig the planting hole (50 x 50 x 50 cm). Add some planting compost to the existing soil, position the root ball, backfill around it, and water thoroughly. Monitor watering during the first year, intervening during hot periods to promote root growth. Once well established, the plant is relatively tolerant.

Pruning is not necessary, except to remove dead wood or correct a slightly sparse habit. Trim the branches by one-third of their size after flowering.

Planting period

Best planting time March, October
Recommended planting time February to May, October to November

Intended location

Suitable for Meadow, Woodland edge
Type of use Border, Hedge
Hardiness Hardy down to -20°C (USDA zone 6b) Show map
Ease of cultivation Beginner
Planting density 1 per m2
Planting spacing Every 90 cm
Exposure Sun, Partial shade
Soil pH Any
Soil type Clayey (heavy), Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light)
Soil moisture Moist soil, Common, well-prepared

Care

Pruning instructions Maintenance pruning: if you simply want to maintain the shape of the bush, just remove weak or overly arched branches, as well as dead wood. Rejuvenation pruning: for plants that have become too bulky or have lost their bushy shape (thinning at the base, sparse branches), it is recommended to prune the branches to 50 cm from the ground. This can be done all at once (rigorous pruning, for older plants) or over three years (pruning only one-third of the branches each year, while ensuring a balanced appearance for the bush). The bush will then produce new shoots.
Pruning Pruning recommended once a year
Pruning time May to June
Soil moisture Moist soil
Disease resistance Very good
Overwinter Can be left in the ground

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