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Buddleja davidii Octopus Magenta - Butterfly bush

Buddleja davidii '1808mag'PBR Octopus Magenta
Butterfly Bush

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Value-for-money
Octopus Magenta is a compact, bushy buddleia, remarkable for its branching flower panicles of a very beautiful magenta colour. This butterfly bush offers a prolonged summer flowering, brilliant and lush. Hardy and easy to grow, resistant to diseases, it is perfect for small spaces, in the garden or in a pot.  
Flower size
20 cm
Height at maturity
1.50 m
Spread at maturity
1.30 m
Exposure
Sun, Partial shade
Hardiness
Hardy down to -18°C
Soil moisture
Dry soil, Moist soil
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Best planting time March, October
Recommended planting time March to May, October to November
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Flowering time June to October
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Description

Buddleja 'Octopus Magenta' is a butterfly bush with a unique compact habit and branched flower panicles in bright magenta pink. This unusual variety stands out not only for its long, generous summer flowering, but also for its floral structure reminiscent of an octopus's arms. Hardy, disease-resistant, drought-tolerant, it adapts everywhere, whether in the ground or in a pot, on a sunny terrace or balcony. Its flowers are irresistibly attractive to butterflies and other pollinators, while adding colour and dynamism to the garden. 

Buddleja davidii ‘Octopus Magenta’ belongs to the Scrophulariaceae family. This ‘butterfly bush’, ‘David’s buddleia’ or ‘summer lilac’, also bears the trade designation Buddleja ‘1808mag’. It was bred around 2020 by Thompson & Morgan (United Kingdom), as part of a breeding programme aimed at producing compact, sterile, floriferous and original forms. This cultivar belongs to the ‘Octopus’ series, which is characterised by its branched flower panicles. They give each inflorescence a star-shaped structure that is very dense with flowers. Unlike the type species, which can become invasive in some environments, this sterile cultivar has modest dimensions, continuous flowering and better disease tolerance, particularly to powdery mildew.

Butterfly bush ‘Octopus Magenta’ is a semi-evergreen shrub, meaning it loses some or all of its foliage in winter depending on climatic conditions. Its growth is rapid: it reaches its mature size in two to three seasons. This butterfly bush forms a dense, branched bush with a naturally rounded habit, measuring 1.20m to 1.50m tall and 1.30m wide. Its foliage is composed of lanceolate, opposite, 6 to 12cm long, medium greyish-green leaves, slightly downy on the underside. The stems are quadrangular, as in all Buddleja davidii. The abundant flowers are grouped in conical, 20 to 30 cm long panicles, branched into several secondary axes. Each flower is tubular, an intense magenta pink. They are lightly scented, rich in nectar, and particularly attractive to pollinating insects such as butterflies, bees and bumblebees. Flowering extends from June to September, or even October in temperate climates. This cultivar produces few or no seeds, which reduces the risk of uncontrolled spread.

Buddleja davidii ‘Octopus Magenta’ makes a big impact in sunny borders and in large containers on the terrace. Mix it with floriferous perennials like Nepeta 'Six Hills Giant' and light grasses like Pennisetum, which act as airy counterpoints. Also pair it with pink echinaceas or woodland sages: a real feast for pollinators! It also fits into a low hedge with other buddleias for pots, Japanese spirea 'Anthony Waterer' and small deutzias like Deutzia gracilis, for example. 

 

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The complete guide to growing butterfly bush
Family sheet
by Virginie T. 14 min.
The complete guide to growing butterfly bush
Read article

Plant habit

Height at maturity 1.50 m
Spread at maturity 1.30 m
Habit irregular, bushy
Growth rate fast

Flowering

Flower colour pink
Flowering time June to October
Inflorescence Panicle
Flower size 20 cm
Fragrance slightly scented
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Semi-evergreen
Foliage colour green

Botanical data

Genus

Buddleja

Species

davidii

Cultivar

'1808mag'PBR Octopus Magenta

Family

Scrophulariaceae

Other common names

Butterfly Bush

Botanical synonyms

Buddleja '1808mag'PBR, Buddleja 'Octopus Magenta'

Origin

Cultivar or hybrid

Product reference24827

Planting and care

Buddleia davidii 'Octopus Magenta' is easy to grow, as it is an undemanding plant. It appreciates sunny spots, but also flowers in partial shade. Plant it in spring or early autumn, in ordinary soil, even limy, but well-worked and well-drained. Once well established, the plant will tolerate periods of moderate drought if the soil is deep. Buddleia davidii has no significant enemies. However, beware of caterpillars, vine weevils, bugs, and red spider mites that can invade it.

Planting period

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

Intended location

Suitable for Meadow
Type of use Border, Small gardens, Container, Hedge
Hardiness Hardy down to -18°C (USDA zone 7a) Show map
Ease of cultivation Beginner
Exposure Sun, Partial shade
Soil pH Any
Soil type Chalky (poor, alkaline and well-drained), Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Dry soil, Moist soil Well-drained soil

Care

Pruning instructions The shrub only requires a single pruning after flowering. At the end of winter, cut back a third or even half of the branches to maintain a compact habit. Buddleias flower on the current year's wood, so you will not risk removing the future flowers.
Pruning Pruning recommended once a year
Pruning time March to April
Soil moisture Dry soil, Moist soil
Disease resistance Very good
Overwinter Can be left in the ground

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