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Below is a list of magnolia species and cultivars which currently (2016)[1] hold the Royal Horticultural Society's Award of Garden Merit. Magnolias are shrubs or trees which put on a showy display of tulip-like flowers, often scented, in early to late spring. Many are slow-growing and may take several years to start flowering. They are suitable for cultivation in parks or gardens in temperate regions.[2] M. stellata is suitable for smaller gardens. All are deciduous except for M. grandiflora, which is evergreen. The AGM citation includes a hardiness rating:[3] all of the plants listed here are rated H6 (hardy down to -20 °C to -15 °C) or H5 (hardy down to -15 °C to -10 °C). This is indicated in the column marked H. Nevertheless, magnolias prefer a sheltered spot, and flower buds may be damaged by late frosts. The maximum size (height and spread) is shown in metres.

Listing[edit]

Name AGM H Colour Scent Max size h×w Image
M. 'Athene'[4] 2012 H5 white/pink yes 8 × 8
M. 'Caerhays Belle'[5] 2012 H5 pink no 12+ × 8+
M. 'Caerhays Surprise'[6] 2012 H5 pink no 8 × 8
M. campbellii 'Darjeeling' 2012 H4 deep pink/wine no 10 × 4
M. 'Daphne'[7] 2012 H6 pale yellow no 8 × 8
M. David Clulow'[8] 2012 H5 white/pale pink no 8 × 8
M. 'Daybreak' 2012 H6 pink/red yes 10 × 3
M. denudata[9] (yulan) 1993 H6 white yes 12 × 12
M. 'Elizabeth'[10] 1993 H6 pale yellow yes 12 × 8
M. 'Galaxy'[11] 1993 H6 rose-pink no 12 × 8
M. 'George Henry Kern'[12] 2012 H6 pale pink/purple no 4 × 2.5
M. 'Gold Star'[13] 2012 H6 creamy yellow no 8 × 4
M. grandiflora 'Kay Parris'[14] 2012 H5 creamy white yes 8 × 4
M. grandiflora 'Victoria' 2002 H5 white yes 10 × 8
M. 'Heaven Scent'[15] 1993 H6 rose pink yes 12 × 12
M. liliiflora 'Nigra'[16] 1993 H6 red/purple no 4 × 2.5
M. × loebneri 'Donna'[17] 2012 H6 white yes 8 × 8
M. × loebneri 'Leonard Messel'[18] 1993 H6 lilac/pale pink yes 8 × 8
M. × loebneri 'Mag's Pirouette' 2012 H6 white yes 4 × 3
M. × loebneri 'Merrill'[19] 1993 H6 white no 8 × 8
M. × loebneri 'Wildcat' 2012 H6 white no 4 × 3
M. 'Lois'[20] 2012 H6 primrose yellow yes 12 × 8
M. 'Milky Way'[21] 2002 H5 white/pale pink no 8 × 4
M. 'Pegasus' 2012 H6 white/purple no 6 × 6
M. salicifolia 'Wada's Memory'[22] 1993 H6 white yes 12 × 8
M. 'Sayonara'[23] 1993 H5 white/purple no 8 × 4
M. sieboldii 'Colossus'[24] 2012 H6 white/red yes 8 × 8+
M. × soulangeana 'Brozzonii'[25] 1993 H5 white/purple no 8 × 8
M. × soulangeana 'Pickard's Schmetterling' 2012 H5 white/purple no 8+ × 8
M. 'Spectrum'[26] 2012 H6 pale pink/purple no 8 × 8
M. sprengeri var. diva 'Burncoose'[27] 2012 H6 purple/white no 12 × 8
M. sprengeri var. diva 'Copeland Court'[28] 2012 H6 bright pink no 8 × 8
M. sprengeri var. diva 'Eric Savill'[29] 2012 H6 bright pink/pale pink no 12 × 8
M. 'Star Wars'[30] 2002 H5 rose pink, double yes 8 × 4
M. stellata 'Centennial'[31] 2012 H6 white/pink yes 2.5 × 4
M. stellata 'Jane Platt'[32] 2012 H6 pale pink yes 2.5 × 4
M. stellata 'Royal Star'[33] 2012 H6 white yes 4 × 4
M. 'Susan'[34] 1993 H6 purple/pink yes 4 × 4
M. 'Sweetheart' 2012 H5 pink yes 6 × 4
M. wilsonii[35] 1993 H6 white/crimson yes 8 × 8
M. 'Yellow Lantern'[36] 2012 H6 pale yellow no 5 × 5

Withdrawn[edit]

Name Type Flower colour Dimensions h × w
M. grandiflora 'Exmouth' [37] tree f double white 8–12 m (26–39 ft) × 8–12 m (26–39 ft)
'Lennei'[38] shrub f purple/white 4–8 m (13–26 ft) × 2.5–4 m (8–13 ft)
M. obovata[39] tree cream 12–15 m (39–49 ft) × 8–12 m (26–39 ft)
'Rustica Rubra'[40] shrub f rose-pink 4–8 m (13–26 ft) × 4–8 m (13–26 ft)
M. salicifolia[41] tree white, fragrant 8–12 m (26–39 ft) × 4–8 m (13–26 ft)
M. stellata[42] shrub white 1.5–2.5 m (5–8 ft) × 2.5–4 m (8–13 ft)
M. stellata 'Water Lily'[43] shrub white 1.5–2.5 m (5–8 ft) × 2.5–4 m (8–13 ft)

References[edit]

  1. ^ "RHS AGM List October 2016 (ornamentals)". Royal Horticultural Society. 2017. Retrieved 2017-01-15.
  2. ^ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 978-1405332965.
  3. ^ "RHS hardiness rating". Royal Horticultural Society. Retrieved 21 Nov 2014.
  4. ^ "Magnolia 'Athene' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-20.
  5. ^ "Magnolia 'Caerhays Belle'". Royal Horticultural Society. 2017. Retrieved 2017-01-20.
  6. ^ "Magnolia 'Caerhays Surprise' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-20.
  7. ^ "Magnolia 'Daphne' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  8. ^ "Magnolia 'David Clulow' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  9. ^ "Magnolia denudata AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2020-02-18.
  10. ^ "Magnolia 'Elizabeth' AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2020-02-18.
  11. ^ "Magnolia 'Galaxy' AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2020-02-18.
  12. ^ "Magnolia 'George Henry Kern' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  13. ^ "Magnolia 'Gold Star'". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  14. ^ "Magnolia grandiflora 'Kay Parris' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  15. ^ "Magnolia 'Heaven Scent' AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2020-02-18.
  16. ^ "Magnolia liliiflora 'Nigra' AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2020-02-18.
  17. ^ "Magnolia × loebneri 'Donna' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  18. ^ "Magnolia × loebneri 'Leonard Messel' AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2020-02-18.
  19. ^ "Magnolia × loebneri 'Merrill' AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2020-02-18.
  20. ^ "Magnolia 'Lois' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  21. ^ "Magnolia 'Milky Way' AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2013-05-19.
  22. ^ "Magnolia salicifolia 'Wada's Memory' AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2013-05-19.
  23. ^ "Magnolia 'Sayonara' AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2020-02-18.
  24. ^ "Magnolia sieboldii 'Colossus' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  25. ^ "Magnolia × soulangeana 'Brozzonii' AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2020-02-18.
  26. ^ "Magnolia 'Spectrum' AGM". Royal Horticultural Society. 2017. Retrieved 2020-02-18.
  27. ^ "Magnolia sprengeri var. diva 'Burncoose' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  28. ^ "Magnolia sprengeri var. diva 'Copeland Court' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  29. ^ "Magnolia sprengeri var. diva 'Eric Savill' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  30. ^ "Magnolia 'Star Wars' AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2020-02-18.
  31. ^ "Magnolia stellata 'Centennial' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  32. ^ "Magnolia stellata 'Jane Platt' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  33. ^ "Magnolia stellata 'Royal Star' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  34. ^ "Magnolia 'Susan' AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2020-02-18.
  35. ^ "Magnolia wilsonii AGM". RHS Plant Selector. Royal Horticultural Society. Retrieved 2020-02-18.
  36. ^ "Magnolia 'Yellow Lantern' AGM". Royal Horticultural Society. 2017. Retrieved 2017-01-23.
  37. ^ http://apps.rhs.org.uk/plantselector/plant?plantid=1221 [dead link]
  38. ^ "Magnolia × soulangeana 'Lennei'". RHS Plant Selector. Royal Horticultural Society. Retrieved 2013-05-19.
  39. ^ "Magnolia obovata Thunb". RHS Plant Selector. Royal Horticultural Society. Retrieved 2013-05-19.
  40. ^ "Magnolia × soulangeana 'Rustica Rubra'". RHS Plant Selector. Royal Horticultural Society. Retrieved 2013-05-19.
  41. ^ "Magnolia salicifolia". RHS Plant Selector. Royal Horticultural Society. Retrieved 2013-05-19.
  42. ^ "Magnolia stellata". RHS Plant Selector. Royal Horticultural Society. Retrieved 2013-05-19.
  43. ^ "Magnolia stellata 'Water Lily'". RHS Plant Selector. Royal Horticultural Society. Retrieved 2013-05-19.
source: https://en.wikipedia.org/wiki/List_of_Award_of_Garden_Merit_magnolias

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