List of Award of Garden Merit dahlias

'Moonfire' (VanDusen Botanical Garden, Stan Shebs)

The following is a list of dahlia cultivars which have gained the Royal Horticultural Society's Award of Garden Merit. They are tuberous perennials, originally from South America, with showy daisy-like composite flowerheads in all shades and combinations of white, yellow, orange, pink and red, flowering in late summer and autumn (fall). Much work has been done on the development of a range of flower shapes and sizes. They may be sold as dry tubers in Spring, and started off in heat before being planted out after all danger of frost has passed. Alternatively they can be purchased later in the season, in pots ready to flower. Dwarf bedding types are usually cultivated as annuals and discarded after flowering. In mild areas without penetrating frosts, mature plants can be overwintered in the garden; otherwise, they are lifted and stored in a frost free place. They are easily propagated from cuttings in Spring.^[1]

Flower shapes can be divided into 14 main groups:-

1. single: less than 10 cm (4 in) - open centred, with a single or double row of ray florets
2. waterlily: miniature, small or medium sized blooms - double, with a small number of flattened, rounded ray florets
3. collerette: 10–15 cm (4–6 in) - single row of flat ray florets surrounding an inner collar of shorter florets and a central disc
4. anemone-flowered: 10–15 cm (4–6 in) - upward-pointing, tubular florets, surrounded by one or more rows of flattened ray florets
5. pompon: 10 cm (4 in) - tightly spherical small blooms with florets in a scale-like arrangement
6. ball: similar to pompon but larger in size
7. semi-cactus: double flowers in a range of sizes; many pointed, recurved ray florets
8. cactus: double flowers in a range of sizes; many pointed, recurved ray florets that are narrower than semi-cactus flowers
9. decorative: fully double flowers with the central disc completely hidden; the broad florets may be pointed and twisted
10. miscellaneous: including peony-flowered, orchid-flowered, chrysanthemum-flowered, dwarf bedding

As of 2015, 124 cultivars are listed.^[2] Maximum dimensions of plants are shown in centimetres.

Name	Type	Colour	Height (cm)	Spread (cm)	Ref
Allan Sparkes	waterlily	pink	150	100	[3]
Almand's Climax	decorative	pink	100	100	[4]
Alva's Doris	semi-cactus	red	120	60	[5]
Alva's Supreme	decorative	yellow (pale)	120	60	[6]
Andrew Magson	semi-cactus	red	150	100	[7]
Asahi Chohje	anemone	red/white	150	100	[8]
Bednall Beauty	dwarf bedding	red	50	50	[9]
Bishop of Llandaff	peony	red	110	45	[10]
Bridge View Aloha	semi-cactus	yellow/red	150	100	[11]
Brookfield Delight	single	orange	50	50	[12]
Chessy	single	yellow (lemon)	50	50	[13]
Clair de Lune	collerette	cream	110	60	[14]
Cream Alva's	decorative	cream	150	100	[15]
David Howard	decorative	yellow (bronze)	100	50	[16]
Ellen Huston	dwarf bedding	orange (scarlet)	50	50	[17]
Fascination	peony	pink	60	45	[18]
Figurine	waterlily	pink (pale)	100	50	[19]
Finchcocks	waterlily	orange	120	60	[20]
Freya's Paso Doble	anemone	white/yellow	110	60	[21]
Gallery Art Deco[22]	decorative	orange/red	100	50	[23]
Gallery Art Nouveau[24]	decorative	pink (raspberry)	100	50	[25]
Gallery Leonardo[26]	decorative	pink	50	50	[27]
Gallery Pablo[28]	decorative	pink/yellow	50	50	[29]
Gallery Renoir[30]	decorative	pink (rose)	50	50	[31]
Gallery Vincent[32]	decorative	yellow/orange	50	50	[33]
Garden Party	cactus	yellow/orange	60	45	[34]
Geoffrey Kent	decorative	red	100	50	[35]
Glorie van Heemstede	decorative	yellow	130	60	[36]
Grenadier	decorative	red	100	100	[37]
Hamari Accord	semi-cactus	yellow (pale)	120	60	[38]
Hamari Bride	semi-cactus	white	120	60	[39]
Hamari Gold	decorative	yellow	120	60	[40]
Hamari Rosé	ball	pink/yellow	120	60	[41]
Hamilton Lillian	decorative	orange	120	60	[42]
Hillcrest Desire	cactus	orange	120	60	[43]
Hillcrest Regal	collerette	red (deep)	120	60	[44]
Hillcrest Royal	cactus	purple	120	60	[45]
Honka	single orchid	yellow	100	50	[46]
Jomanda	ball	orange	110	60	[47]
Karenglen	decorative	orange	110	60	[48]
Kenora Sunset	semi-cactus	yellow/orange	120	60	[49]
Kenora Valentine	decorative	red	120	60	[50]
Kidd's Climax	decorative	red	110	60	[51]
Lemon Elegans	semi-cactus	yellow (lemon)	130	100	[52]
Lilac Taratahi	cactus	pink	150	100	[53]
Lismore Willie	waterlily	yellow (bronze)	120	60	[54]
Marie Schnugg	single orchid	red/yellow	50	50	[55]
Moonfire	dwarf bedding	yellow/red	75	45	[56]
Omo	single lily	white/yellow	40	40	[57]
Pearl of Heemstede	decorative	pink (silvery)	100	45	[58]
Pink Pastelle	semi-cactus	pink	120	60	[59]
Pink Sensation	cactus	pink (rose)	150	100	[60]
Preston Park	dwarf bedding	red (scarlet)	45	45	[61]
Small World	pompon	white	110	60	[62]
So Dainty	semi-cactus	orange (pale)	110	60	[63]
Tally Ho[64]	miscellaneous	orange (pale)	60	45	[65]
Taratahi Ruby	waterlily	red	150	100	[66]
Twyning's After Eight	single	white	100	100	[67]
Weston Pirate	cactus	red (ruby)	150	100	[68]
Weston Spanish Dancer	cactus	yellow/red	150	100	[69]
White Alva's	decorative	white	120	60	[70]
White Ballet	decorative	white	90	60	[71]
Witteman's Superba	semi-cactus	red (crimson)	150	100	[72]
Wootton Cupid	ball	pink/yellow	110	60	[73]
Wootton Impact	semi-cactus	yellow (bronze)	110	60	[74]
Yellow Hammer	dwarf bedding	yellow (pale)	60	45	[75]
Zorro[76]	decorative	red (crimson)	120	60	[77]

References

1. RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
2. RHS 2015, Search for AGM Plants: Dahlia.
3. "RHS Plant Selector - Dahlia 'Allan Sparkes'". Retrieved 11 August 2013.
4. "RHS Plant Selector - Dahlia 'Almand's Climax'". Retrieved 11 August 2013.
5. "RHS Plant Selector - Dahlia 'Alva's Doris'". Retrieved 11 August 2013.
6. "RHS Plant Selector - Dahlia 'Alva's Supreme'". Retrieved 11 August 2013.
7. "RHS Plant Selector - Dahlia 'Andrew Magson'". Retrieved 12 August 2013.
8. "RHS Plant Selector - Dahlia 'Asahi Chohje'". Retrieved 12 August 2013.
9. "RHS Plant Selector - Dahlia 'Bednall Beauty'". Retrieved 12 August 2013.
10. "RHS Plant Selector - Dahlia 'Bishop of Llandaff'". Retrieved 12 August 2013.
11. "RHS Plant Selector - Dahlia 'Bridge View Aloha'". Retrieved 13 August 2013.
12. "RHS Plant Selector - Dahlia 'Brookfield Delight'". Retrieved 13 August 2013.
13. "RHS Plant Selector - Dahlia 'Chessy'". Retrieved 13 August 2013.
14. "RHS Plant Selector - Dahlia 'Clair de Lune'". Retrieved 13 August 2013.
15. "RHS Plant Selector - Dahlia 'Cream Alva's'". Retrieved 13 August 2013.
16. "RHS Plant Selector - Dahlia 'David Howard'". Retrieved 13 August 2013.
17. "RHS Plant Selector - Dahlia 'Ellen Huston'". Retrieved 13 August 2013.
18. "RHS Plant Selector - Dahlia 'Fascination'". Retrieved 13 August 2013.
19. "RHS Plant Selector - Dahlia 'Figurine'". Retrieved 13 August 2013.
20. "RHS Plant Selector - Dahlia 'Finchcocks'". Retrieved 13 August 2013.
21. "RHS Plant Selector - Dahlia 'Freya's Paso Doble'". Retrieved 13 August 2013.
22. named after the 20th-century art style Art Deco
23. "RHS Plant Selector - Dahlia 'Gallery Art Deco'". Retrieved 13 August 2013.
24. named after the 19th/20th-century art style Art Nouveau
25. "RHS Plant Selector - Dahlia 'Gallery Art Nouveau'". Retrieved 13 August 2013.
26. named after the Renaissance artist Leonardo da Vinci
27. "RHS Plant Selector - Dahlia 'Gallery Leonardo'". Retrieved 13 August 2013.
28. named after the Spanish painter Pablo Picasso
29. "RHS Plant Selector - Dahlia 'Gallery Pablo'". Retrieved 13 August 2013.
30. named after the French painter Pierre-Auguste Renoir
31. "RHS Plant Selector - Dahlia 'Gallery Renoir'". Retrieved 13 August 2013.
32. named after the Dutch painter Vincent van Gogh
33. "RHS Plant Selector - Dahlia 'Gallery Vincent'". Retrieved 13 August 2013.
34. "RHS Plant Selector - Dahlia 'Garden Party'". Retrieved 13 August 2013.
35. "RHS Plant Selector - Dahlia 'Geoffrey Kent'". Retrieved 13 August 2013.
36. "RHS Plant Selector - Dahlia 'Glorie van Heemsteede'". Retrieved 13 August 2013.
37. "RHS Plant Selector - Dahlia 'Grenadier'". Retrieved 13 August 2013.
38. "RHS Plant Selector - Dahlia 'Hamari Accord'". Retrieved 13 August 2013.
39. "RHS Plant Selector - Dahlia 'Hamari Bride'". Retrieved 13 August 2013.
40. "RHS Plant Selector - Dahlia 'Hamari Gold'". Retrieved 13 August 2013.
41. "RHS Plant Selector - Dahlia 'Hamari Rosé'". Retrieved 13 August 2013.
42. "RHS Plant Selector - Dahlia 'Hamilton Lillian'". Retrieved 13 August 2013.
43. "RHS Plant Selector - Dahlia 'Hillcrest Desire'". Retrieved 13 August 2013.
44. "RHS Plant Selector - Dahlia 'Hillcrest Regal'". Retrieved 13 August 2013.
45. "RHS Plant Selector - Dahlia 'Hillcrest Royal'". Retrieved 13 August 2013.
46. "RHS Plant Selector - Dahlia 'Honka'". Retrieved 13 August 2013.
47. "RHS Plant Selector - Dahlia 'Jomanda'". Retrieved 13 August 2013.
48. "RHS Plant Selector - Dahlia 'Karenglen'". Retrieved 13 August 2013.
49. "RHS Plant Selector - Dahlia 'Kenora Sunset'". Retrieved 13 August 2013.
50. "RHS Plant Selector - Dahlia 'Kenora Valentine'". Retrieved 13 August 2013.
51. "RHS Plant Selector - Dahlia 'Kidd's Climax'". Retrieved 13 August 2013.
52. "RHS Plant Selector - Dahlia 'Lemon Elegans'". Retrieved 13 August 2013.
53. "RHS Plant Selector - Dahlia 'Lilac Taratahi'". Retrieved 13 August 2013.
54. "RHS Plant Selector - Dahlia 'Lismore Willie'". Retrieved 13 August 2013.
55. "RHS Plant Selector - Dahlia 'Marie Schnugg'". Retrieved 13 August 2013.
56. "RHS Plant Selector - Dahlia 'Moonfire'". Retrieved 13 August 2013.
57. "RHS Plant Selector - Dahlia 'Omo'". Retrieved 13 August 2013.
58. "RHS Plant Selector - Dahlia 'Pearl of Heemstede'". Retrieved 14 August 2013.
59. "RHS Plant Selector - Dahlia 'Pink Pastelle'". Retrieved 16 August 2013.
60. "RHS Plant Selector - Dahlia 'Pink Sensation'". Retrieved 16 August 2013.
61. "RHS Plant Selector - Dahlia 'Preston Park'". Retrieved 16 August 2013.
62. "RHS Plant Selector - Dahlia 'Small World'". Retrieved 16 August 2013.
63. "RHS Plant Selector - Dahlia 'So Dainty'". Retrieved 16 August 2013.
64. named after the foxhunting term "Tally Ho"
65. "RHS Plant Selector - Dahlia 'Tally Ho'". Retrieved 16 August 2013.
66. "RHS Plant Selector - Dahlia 'Taratahati Ruby'". Retrieved 16 August 2013.
67. "RHS Plant Selector - Dahlia 'Twyning's After Eight'". Retrieved 16 August 2013.
68. "RHS Plant Selector - Dahlia 'Weston Pirate'". Retrieved 16 August 2013.
69. "RHS Plant Selector - Dahlia 'Weston Spanish Dancer'". Retrieved 16 August 2013.
70. "RHS Plant Selector - Dahlia 'White Alva's'". Retrieved 16 August 2013.
71. "RHS Plant Selector - Dahlia 'White Ballet'". Retrieved 16 August 2013.
72. "RHS Plant Selector - Dahlia 'Witteman's Superba'". Retrieved 16 August 2013.
73. "RHS Plant Selector - Dahlia 'Wootton Cupid'". Retrieved 16 August 2013.
74. "RHS Plant Selector - Dahlia 'Wootton Impact'". Retrieved 16 August 2013.
75. "RHS Plant Selector - Dahlia 'Yellow Hammer'". Retrieved 16 August 2013.
76. named after the fictional outlaw Zorro
77. "RHS Plant Selector - Dahlia 'Zorro'". Retrieved 16 August 2013.

Bibliography

RHS (2015). "Royal Horticultural Society". Retrieved 19 June 2015.