Camellia hiemalis (sasanqua) 'SHOWA-NO-SAKAE'
Camellia hiemalis (sasanqua) 'SHOWA-NO-SAKAE'
hardy camellia
hardy camellia
| SIZE/TYPE | medium-sized shrub |
|---|---|
| USUAL HEIGHT | 2-3m |
| USUAL WIDTH | 1.5-2m |
| LEAVES | evergreen broadleaf |
| COLOUR OF LEAVES |
 green |
| FLOWERS | showy |
| COLOUR OF FLOWERS |
 + multicolored:pink and deep pink
|
| BLOOMING TIME | January - December |
| LOCATION | semi-shade to shade |
| SOIL TYPE | acidic (peaty) to neutral |
| SOIL MOISTURE REQUIREMENTS | evenly moist but well-drained |
| USDA zone (lowest) | 6b (down to -21°C) |
| WINTER PROTECTION | |
| FOR ZONE 5+6 |
|
| FOR ZONE 7 |
|
| BELONGS TO CATEGORIES |
Evergreen broadleaf Winter blooms Exotics |
History of breeding
Dreams usually come true when you no longer accept others saying that this or that is impossible. It is often connected with the fact that no one has tried it before or tried hard and long enough. In the horticultural world, this is exactly what pushes the boundaries, especially when it comes to hardiness. For example, until recently, it was believed that none of the subtropical species would have stood a chance to make it through the continental winters. Such as the silk tree. And now? Many gardeners enjoy its immense beauty in their gardens, surviving -25 °C without a minor damage. Exactly the same applies to evergreen (bull bay) magnolia where possibly at the same time, there were breeders selecting their hardy varieties. Elsewhere, there were a few camellia enthusiasts working on the identical issue.
Camellias would probably have remained a feature of southern countries if not for the harsh winters of the 1970s and 1980s. In the USA many of them were killed during some of these winters, and they were not all grown at the borderline of their hardiness. Two botanists who witnessed this fiasco decided to breed hybrids and varieties that would withstand harder frost not only in their former environment but also in countries up north. Dr. Clifford R. Parks of the North Carolina University spent his time on breeding mostly spring flowering camellias (japonica species and hybrids), and he is famous for the April series. The other visionary was dr. William Ackerman (†2013), a retired USDA botanist from Ashton. Ackerman recognized his calling when in spring 1978 only 15 plants survived out of originally cultivated 956 specimens and he changed his of from breeding only fragrant camellias to hardy camellias. He mostly focused on autumn flowering hybrids and sasangua species and his famous series are Winter and Ashton.
Even though parentage of many plants which are most probably hybrids is untraceable today we stick to accepted names be it c.japonica or c.sasangua. Interesting fact is that camellia was named after a Czech (Moravian) botanist George Joseph Kamel (†1706), a missionary in the Phillipines in late 1600's whose work was so contributive that Carl Linnaeus decided to name camellia in his honour several decades after his death. So Kamel had no chance to see the plant as it was first brought to Europe in 1739 and was not present in the flora of Phillipines.
Description of varieties
Showa-no-sakae is a winter camellia variety which is often classified as Camellia sasanqua. Its pretty flowers are small to mid-sized (6-8 cm), peony-like, semi-double to fully double, medium to deep pink. It begins to bloom according to the maturity of the buds and the weather conditions, usually from mid-November and continues until the first harsh frosts. Mild frost usually doesn't bother the open flowers, as long as it's short-term, and if the shrub has more buds, it will continue to bloom after the days warm up. The evergreen leaves are narrowly ovate to broadly elliptic, dark green, highly glossy, and give the plant a luxurious appearance even outside the blooming season. It grows into a spreading, rather symmetrical shrub that can be shaped and trimmed after flowering. Showa-no-sakae was selected by E. A. McIlhenny from Jungle Gardens in Louisiana, USA, as a seedling of Shishigashira from Japan. It was registered in 1935.
Cultivation
Camellias need similar planting like rhododendrons - once you plant them well you need not care for them. They require fresh, ericaceous (acid), peat-based, humus-rich soil that will never dry out but will not be water-retaining like clay. Even moisture and good drainage are key demands for good root growth. We strongly suggest using mycorrhizal fungi when planting. Never plant it too deep and if your soil is clay elevate the root ball accordingly. Fertilizing is recommended after flowering, once a month until late summer.
Crucial is finding a good location and finding one for good - camellias detest transplanting. In the wild they grow under canopies of tall trees or at woodland margins. They dislike direct sunlight and both excess heat in summer and drying winds in colder months. Find a place at the back of the house away from winter and spring sunlight, sheltered from the north-west, or behind a tall hedge with some trees nearby to cast at least dappled shade during summer. Ever seen a camellia in full sun at the seaside? Remember that the air is so humid there that plants do not suffer from drying rays as they keep on drinking all day long. Before it establishes which might take 2-3 years provide enough moisture also in winter if the ground is not frozen but don't overwater! Mulch it well with bark mulch 5-10 cm high. Suggested hardiness is -20° to -23°C (USDA zone 6b).
Last update 17-02-2025
Show complete text
Dreams usually come true when you no longer accept others saying that this or that is impossible. It is often connected with the fact that no one has tried it before or tried hard and long enough. In the horticultural world, this is exactly what pushes the boundaries, especially when it comes to hardiness. For example, until recently, it was believed that none of the subtropical species would have stood a chance to make it through the continental winters. Such as the silk tree. And now? Many gardeners enjoy its immense beauty in their gardens, surviving -25 °C without a minor damage. Exactly the same applies to evergreen (bull bay) magnolia where possibly at the same time, there were breeders selecting their hardy varieties. Elsewhere, there were a few camellia enthusiasts working on the identical issue.
Camellias would probably have remained a feature of southern countries if not for the harsh winters of the 1970s and 1980s. In the USA many of them were killed during some of these winters, and they were not all grown at the borderline of their hardiness. Two botanists who witnessed this fiasco decided to breed hybrids and varieties that would withstand harder frost not only in their former environment but also in countries up north. Dr. Clifford R. Parks of the North Carolina University spent his time on breeding mostly spring flowering camellias (japonica species and hybrids), and he is famous for the April series. The other visionary was dr. William Ackerman (†2013), a retired USDA botanist from Ashton. Ackerman recognized his calling when in spring 1978 only 15 plants survived out of originally cultivated 956 specimens and he changed his of from breeding only fragrant camellias to hardy camellias. He mostly focused on autumn flowering hybrids and sasangua species and his famous series are Winter and Ashton.
Even though parentage of many plants which are most probably hybrids is untraceable today we stick to accepted names be it c.japonica or c.sasangua. Interesting fact is that camellia was named after a Czech (Moravian) botanist George Joseph Kamel (†1706), a missionary in the Phillipines in late 1600's whose work was so contributive that Carl Linnaeus decided to name camellia in his honour several decades after his death. So Kamel had no chance to see the plant as it was first brought to Europe in 1739 and was not present in the flora of Phillipines.
Description of varieties
Showa-no-sakae is a winter camellia variety which is often classified as Camellia sasanqua. Its pretty flowers are small to mid-sized (6-8 cm), peony-like, semi-double to fully double, medium to deep pink. It begins to bloom according to the maturity of the buds and the weather conditions, usually from mid-November and continues until the first harsh frosts. Mild frost usually doesn't bother the open flowers, as long as it's short-term, and if the shrub has more buds, it will continue to bloom after the days warm up. The evergreen leaves are narrowly ovate to broadly elliptic, dark green, highly glossy, and give the plant a luxurious appearance even outside the blooming season. It grows into a spreading, rather symmetrical shrub that can be shaped and trimmed after flowering. Showa-no-sakae was selected by E. A. McIlhenny from Jungle Gardens in Louisiana, USA, as a seedling of Shishigashira from Japan. It was registered in 1935.
Cultivation
Camellias need similar planting like rhododendrons - once you plant them well you need not care for them. They require fresh, ericaceous (acid), peat-based, humus-rich soil that will never dry out but will not be water-retaining like clay. Even moisture and good drainage are key demands for good root growth. We strongly suggest using mycorrhizal fungi when planting. Never plant it too deep and if your soil is clay elevate the root ball accordingly. Fertilizing is recommended after flowering, once a month until late summer.
Crucial is finding a good location and finding one for good - camellias detest transplanting. In the wild they grow under canopies of tall trees or at woodland margins. They dislike direct sunlight and both excess heat in summer and drying winds in colder months. Find a place at the back of the house away from winter and spring sunlight, sheltered from the north-west, or behind a tall hedge with some trees nearby to cast at least dappled shade during summer. Ever seen a camellia in full sun at the seaside? Remember that the air is so humid there that plants do not suffer from drying rays as they keep on drinking all day long. Before it establishes which might take 2-3 years provide enough moisture also in winter if the ground is not frozen but don't overwater! Mulch it well with bark mulch 5-10 cm high. Suggested hardiness is -20° to -23°C (USDA zone 6b).
Last update 17-02-2025
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