Camellia × williamsii

Camellia × williamsii
Camellia × williamsii 'Mary Christian' in Real Jardín Botánico, Madrid, Spain.
Genus Camellia
Species Camellia × williamsii
Cultivar group × williamsii
Origin Originally bred in Cornwall by J.C. Williams.[1]

Camellia × williamsii is a cultivar group of hybrid evergreen shrubs that are derived from a crossing of Camellia saluenensis with Camellia japonica.[1] It was originally bred in 1923 at Caerhays Castle in Cornwall by John Charles Williams.[2]

Cultivars

Williamsii cross camellias are hardier than most, and will grow outside anywhere in the UK. Some varieties are known to perform better in colder climates than in warmer ones. 'E.G. Waterhouse', for instance, grows better in Melbourne than it does in Sydney, where it was bred. Hybrid vigour has made the group unusually floriferous, with such varieties as 'St Ewe' flowering for four to five months (December to April in the UK).[2] Some crosses show the elliptical and pointed leaves of C. saluenensis,[3] others the more rounded leaves of C. japonica. But nearly all crosses have flowers with translucent petals.

More than 100 named cultivars have been bred.[1]

The following cultivars have gained the Royal Horticultural Society's Award of Garden Merit.

NameFlower colourSizeRef.
Anticipationrose-pink10m²[4]
Bowen Bryantpink16m²[5]
Brigadoonpink10m²[6]
China Claywhite06m²[7]
Daintinesssalmon pink10m²[8]
Debbierose pink16m²[9]
Donationpink64m²[10]
E.T.R. Carlyonwhite10m²[11]
Elegant Beautyrose pink10m²[12]
Elsie Juryrose pink10m²[13]
George Blandfordpink16m²[14]
Glenn's Orbitdeep pink16m²[15]
J.C. Williamspale pink16m²[16]
Jury's Yellowwhite/yellow16m²[17]
Les Jurycrimson04m²[18]
Muskokapink/red16m²[19]
Saint Ewerose pink16m²[20]
Water Lilyrose pink10m²[21]

Cultivation

C. × williamsii is an excellent companion to other acid-loving woodland plants such as rhododendron. It grows best in acid soil, ph5.5-6.5, in a sunny or partially shaded, sheltered position. In areas with frost and cold winds, it should be positioned facing away from the morning sun, as the flower buds are easily damaged.[22]

See also

References

  1. 1 2 3 Rowell, Raymond J. (1980). Ornamental Flowering Shrubs in Australia. Australia: AH & AW Reed Pty Ltd. ISBN 0589501771.
  2. 1 2 "Camellias". Caerhays Estate. Retrieved 21 August 2017.
  3. ↑ Mitchell, Bob. "Plant of the month". St Andrews Botanic Garden. Retrieved 22 August 2017.
  4. ↑ "Camellia × williamsii 'Anticipation'". Royal Horticultural Society. Retrieved 22 July 2013.
  5. ↑ "Camellia × williamsii 'Bowen Bryant'". Royal Horticultural Society. Retrieved 22 July 2013.
  6. ↑ "Camellia × williamsii 'Brigadoon'". Royal Horticultural Society. Retrieved 22 July 2013.
  7. ↑ "Camellia × williamsii 'China Clay'". Royal Horticultural Society. Retrieved 22 July 2013.
  8. ↑ "Camellia × williamsii 'Daintiness'". Royal Horticultural Society. Retrieved 22 July 2013.
  9. ↑ "Camellia × williamsii 'Debbie'". Royal Horticultural Society. Retrieved 22 July 2013.
  10. ↑ "Camellia × williamsii 'Donation'". Royal Horticultural Society. Retrieved 22 July 2013.
  11. ↑ "Camellia × williamsii 'E.T.R. Carlyon'". Royal Horticultural Society. Retrieved 22 July 2013.
  12. ↑ "Camellia × williamsii 'Elegant Beauty'". Royal Horticultural Society. Retrieved 22 July 2013.
  13. ↑ "Camellia × williamsii 'Elsie Jury'". Royal Horticultural Society. Retrieved 22 July 2013.
  14. ↑ "Camellia × williamsii 'George Blandford'". Royal Horticultural Society. Retrieved 22 July 2013.
  15. ↑ "Camellia × williamsii 'Glenn's Orbit'". Royal Horticultural Society. Retrieved 22 July 2013.
  16. ↑ "Camellia × williamsii 'J.C. Williams'". Royal Horticultural Society. Retrieved 22 July 2013.
  17. ↑ "Camellia × williamsii 'Jury's Yellow'". Royal Horticultural Society. Retrieved 22 July 2013.
  18. ↑ "Camellia × williamsii 'Les Jury'". Royal Horticultural Society. Retrieved 22 July 2013.
  19. ↑ "Camellia × williamsii 'Muskoka'". Royal Horticultural Society. Retrieved 22 July 2013.
  20. ↑ "Camellia × williamsii 'Saint Ewe'". Royal Horticultural Society. Retrieved 22 July 2013.
  21. ↑ "Camellia × williamsii 'Water Lily'". Royal Horticultural Society. Retrieved 22 July 2013.
  22. ↑ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.


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