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Berberis thunbergii Red Torch - Japanese barberry

Berberis thunbergii 'Red Torch'
Japanese Barberry

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A truly appealing horticultural variety that forms a dense, compact column. In spring, the new shoots emerge in intense red before turning purple in summer. In autumn, the foliage turns red again before the leaves fall to the ground. The small yellow spring flowers produce ornamental red berries in autumn. Very hardy, adapting to most soils, this sun-loving shrub is suitable for borders, low hedges, or containers.
Flower size
1 cm
Height at maturity
1 m
Spread at maturity
50 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -29°C
Soil moisture
all types
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Best planting time March, October
Recommended planting time February to May, September to November
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Flowering time May
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Description

Berberis thunbergii 'Red Torch' is a horticultural variety of barberry that captures attention with its architectural silhouette and the colours of its foliage. This compact, dense shrub forms a column that rarely exceeds 1.20m in height at maturity. Its deciduous foliage oscillates between two tones: bright red in spring and autumn, and purple in summer, thus marking the seasons in the garden. Though small, the yellow spring flowers create a lovely contrast and evolve to produce decorative red fruits at the end of the season. This remarkably hardy Berberis thrives in full sun in most soils, tolerating dry conditions well once established. Its compact, colourful habit makes it an excellent choice for borders, low hedges, and containers on a terrace or even a small balcony, where it enlivens the space with its seasonal variations.

The Berberis genus belongs to the Berberidaceae family, and includes other widely planted ornamental genera such as Nandina (Heavenly bamboo) and mahonias, alongside more niche genera like Podophyllums with their surprisingly architectural leaves. While Berberis vulgaris is considered the 'true' barberry, many other species and hybrids are commonly referred to by this name. The genus is rich with nearly 500 species, more or less thorny, ranging from dwarf shrubs to specimens several metres tall. Berberis thunbergii, also known as Thunberg's barberry, is a species native to the Japanese archipelago, which has given rise to numerous cultivars planted in gardens worldwide.
'Red Torch' is a selection by Frenchman C. Castenet obtained in the early 2000s, highly prized for its ornamental qualities and ease of cultivation. With a very upright habit, the shrub forms a column 80cm to 1.20m tall, and 40 to 60cm wide. The fine branches that make up its dense vegetation grow vertically, forming a kind of plant flame where the central shoots reach up, with the lateral ones arranged in successive tiers. Its name "red torch" is particularly well-deserved in spring when the bright red young shoots appear, and at the end of the season when the plant takes on its equally red autumn colouring. In summer, its foliage turns purple, a more classic colour for the species, very useful for creating colour contrasts in a border. The small, spatulate leaves with rounded tips are proportionate to the shrub's compact dimensions. The tiny flowers appear in small yellow corollas, still decorative for the contrast they create with the foliage in May. They evolve through the season to produce small ornamental red fruits in autumn. Though insignificant, the flowering is nectar-rich and therefore beneficial to biodiversity. The short thorns at the nodes are hidden by the leaves during the growing season, and are more visible in winter after leaf fall. Less formidable than in many other species, they are still quite sharp, so watch your fingers and children.

Berberis thunbergii 'Red Torch' is useful in the garden for creating contrasts in both form and colour. Its compactness allows it to be used even in smaller borders. Plant behind it a Cotinus coggygria 'Golden Lady' for a magnificent display from spring to autumn. This smoke tree develops into an irregular ball 2m in diameter, whose colours sweep the palette from yellow to orange over the months. More compact, Physocarpus opulifolius 'Magic Ball' changes from orange to golden yellow, then to red, while in less harsh climates, Choisya 'Aztec Gold' with its finely cut, architectural, beautiful yellow-green foliage will also be a good companion, its white flowers releasing a pleasant citrus scent in spring.

 

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Berberis, thorny barberry: planting, pruning, and care
Family sheet
by Eva 13 min.
Berberis, thorny barberry: planting, pruning, and care
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Berberis thunbergii Red Torch - Japanese barberry in pictures

Berberis thunbergii Red Torch - Japanese barberry (Foliage) Foliage
Berberis thunbergii Red Torch - Japanese barberry (Plant habit) Plant habit

Plant habit

Height at maturity 1 m
Spread at maturity 50 cm
Habit fastigiate, upright
Growth rate normal

Flowering

Flower colour yellow
Flowering time May
Inflorescence Cluster
Flower size 1 cm
Bee-friendly Attracts pollinators
Fruit colour red

Foliage

Foliage persistence Deciduous
Foliage colour purple

Botanical data

Genus

Berberis

Species

thunbergii

Cultivar

'Red Torch'

Family

Berberidaceae

Other common names

Japanese Barberry

Botanical synonyms

Berberis thunbergii RED TORCH®

Origin

Cultivar or hybrid

Product reference24935

Planting and care

Berberis thunbergii 'Red Torch', hardy down to -25°C, can be planted in spring or autumn in any moist, well-drained soil, even lime-bearing, poor or stony. To enhance its beautiful colours, place it in a sunny position, reserving partial shade for the south. Water generously and frequently during the first few summers, but there is no need to feed. It requires very little maintenance; just ensure the soil remains moist, especially in summer. For Berberis planted as a hedge, shape the silhouette in spring and September. In informal hedges, even out the branches after flowering to reinforce the shrub's columnar habit. Be careful not to handle the branches with bare hands, as they have thorns that are difficult to remove once embedded in the skin.

Planting period

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

Intended location

Suitable for Meadow, Woodland edge
Type of use Border, Free-standing, Container, Hedge
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Beginner
Exposure Sun, Partial shade
Soil pH Any
Soil type Clayey (heavy), Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture all types well-drained

Care

Pruning instructions Prune if necessary at the end of summer to maintain a compact habit.
Pruning Pruning recommended once a year
Pruning time August to September
Soil moisture all types
Disease resistance Good
Overwinter Can be left in the ground

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