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Camellia japonica Kramers Supreme

Camellia japonica Kramer's Supreme
Japanese Camellia, Rose of winter

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More information

Erect variety with cherry red, double, peony-shaped, fragrant flowers. Camellias are very ornamental shrubs, especially in winter, with their large solitary flowers with overlapping petals, intensely coloured, and their glossy dark green evergreen foliage. Ideal in a mass planting with other ericaceous shrubs, or on its own in a shaded corner of the garden.
Flower size
7 cm
Height at maturity
4 m
Spread at maturity
2 m
Exposure
Sun, Partial shade
Hardiness
Hardy down to -15°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time February to April, September to November
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Description

The Camellia 'Kramer's Supreme' is an erect variety with numerous cherry red, well double, peony-shaped, fragrant flowers. It is a highly ornamental bush, especially in winter with its large solitary flowers with overlapping petals, intensely coloured, and its glossy dark green evergreen foliage. Moderately hardy and low maintenance, it is a species that particularly likes woodland environments: sheltered from cold winds, in partial shade in a rich, well-drained, neutral to acid soil that remains moist, especially during hot summer temperatures. Ideal in flower beds with other large camellias or alone in a shaded corner of the garden.

'Kramer's Supreme' Camellia belongs to the Theaceae family, like its ancestor the Camellia japonica. It is an erect to compact bush with deep roots, reaching about 4m (13 ft) in height and 2m (6.5 ft) in spread at maturity, with a medium growth rate. From February to April it produces an abundance of very large, double, silky-petaled, intense cherry red flowers. Its evergreen foliage is composed of large elliptical leaves, 10 to 12cm (4.7 in) long, leathery, dark green and glossy on the upper side. While this bush is hardy down to -15°C (5 °F) in the ground, its flowering may be compromised by snow, icy winds, and temperatures below -5°C (23 °F).

Camellia japonica 'Kramer's Supreme'  thrives in mild and humid climates, and performs best in coastal regions, in acidic, humus-rich, well-drained soil. It will tolerate full sun in favourable climates, but will give its best in partial shade, protected from scorching sun and sheltered from strong winds. It can be planted e.g. in a shrub bed, alongside other acid-loving plants like Rhododendrons, Azaleas, Cornus Kousa, Japanese maples, or Kalmia Latifolia. But it would be a shame to drown this variety in a tangle of foliage or flowers. It deserves a special place, near the entrance of the house or in a beautiful pot on the terrace, to be stored away in winter in very cold climates.

Camellia japonica Kramers Supreme in pictures

Camellia japonica Kramers Supreme (Flowering) Flowering

Plant habit

Height at maturity 4 m
Spread at maturity 2 m
Habit upright, columnar
Growth rate normal

Flowering

Flower colour red
Flowering time February to April
Inflorescence Solitary
Flower size 7 cm
Fragrance Fragrant

Foliage

Foliage persistence Evergreen
Foliage colour dark green

Botanical data

Genus

Camellia

Species

japonica

Cultivar

Kramer's Supreme

Family

Theaceae

Other common names

Japanese Camellia, Rose of winter

Origin

Cultivar or hybrid

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Planting and care

The Camellia 'Kramer's Supreme' tolerates full, non-scorching sunlight in favourable (e.g. mild coastal) climates, but it thrives in partial shade or shade, protected from intense sunlight and sheltered from strong winds. Plant in a fresh, humus-rich, acidic, and well-drained soil. Do not plant the bush too deeply; the top of the root ball should be covered with 3 cm (1.2 in) of soil. In winter, cover it with a 5 to 7 cm (2 to 3 in) thick layer of mulch composed of leaf compost and shredded bark. Beware of late frosts that can damage the flowers and buds. Water during dry periods to prevent the bush dropping its flower buds. It is recommended to plant  camellias in autumn to promote good root development and better flowering from the first year. Possible diseases include chlorosis caused by excess limestone, brown spots caused by burns on leaves exposed to full south, sooty mould, scale insects, and weevils.

Pruning is not necessary but if required should be done sparingly just after flowering, before the emergence of new spring shoots. Most camellia hybrids do not recover from hard pruning.

Planting period

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

Intended location

Suitable for Meadow, Woodland edge, Undergrowth
Type of use Border, Back of border
Hardiness Hardy down to -15°C (USDA zone 7b) Show map
Ease of cultivation Amateur
Planting density 1 per m2
Exposure Sun, Partial shade
Soil pH Acidic, Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, well-drained

Care

Pruning No pruning necessary
Soil moisture Moist soil
Disease resistance Good
Overwinter Can be left in the ground

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