List of Award of Garden Merit clematis explained

Over 70 species and cultivars of clematis currently (2016)^[1] possess the Royal Horticultural Society's Award of Garden Merit, reflecting this plant's continued popularity in gardens in the United Kingdom. Clematis is a genus of woody based perennials, mostly climbers with a twining habit, though some are grown as groundcover or as herbaceous plants. They can be evergreen or deciduous. They bear flowers in all shades except black, pure blue, pure red and orange. The flowers are often large and showy. They can be single or double, fragrant or unscented, compact or vigorous, in a wide range of shapes and sizes. The flowering period varies from early spring to late summer. Many spring-flowering cultivars produce a second flush of blooms after the main display has finished, and many have attractive silky seed-heads prolonging the period of interest. Clematis can be grown against walls, fences, over pergolas and obelisks, or through other shrubs and trees.^[2]

Groups

Cultivars are placed in the following groups:-

• A; Atragene group; medium-sized climbers with nodding, bellshaped flowers early in the season
• Ad; Atragene double-flowered; medium-sized climbers with nodding, bell-shaped double blooms flowering in spring on previous year's growth
• E; Early large flowered group; medium-sized climbers with large star-shaped flowers on previous season's growth, in spring and early summer, often with a second flush of blooms later in the season
• Forsteri group; dwarf or spreading evergreen shrubs or climbers, with deeply cut leaves and small white or cream flowers
• H; Heracleifolia group; subshrubs with long, scrambling stems and abundant small flowers on the current year's growth, in summer and autumn
• I; Integrifolia group; small subshrubs with herbaceous growth, flowers in summer and autumn
• L; Late large-flowered group; medium-sized climbers flowering in summer and early autumn on current year's growth, with large flowers
• M; Montana group; vigorous climbers flowering early in the season
• Md; Montana double-flowered group; vigorous climbers flowering in late spring and early summer
• T; Tangutica group; large climbers with small bell-shaped flowers, usually in shades of yellow or white, late in the season, often followed by silky seed heads
• Tx; Texensis group; climbers with bell- or tulip-shaped flowers in summer and autumn, on the current year's growth
• V; Viticella group; pinnate leaves, nodding half-open flowers on current year's growth, in summer
• Va; Vitalba group; substantial climbers with profuse, small, erect flowers on current year's growth, in summer and autumn; also used for groundcover

Name	Species	Group	Colour	Dia.	H	W	Image
Abundance^[3]		V	red (wine)	7.5	4.0	1.0
Alionushka^[4]		I	pink (rose)	5.0	1.5	0.5
'Evithree'^[5]		E	purple/cerise	15.0	4.0	0.5
Apple Blossom^[6]		Ar	white	6.5	8.0	2.5
Arabella^[7]		I	blue (mauve)	9.0	2.5	1.0
'Evitwo'^[8]		E	white	15.0	4.0	1.0
Ballet Skirt^[9]		A/d	pink	10.0	2.5	1.0
Bill MacKenzie^[10]		T	yellow	7.0	8.0	4.0
Blekitny Aniol^[11]		L	blue (pale)	10.0	2.5	1.0
Broughton Star^[12]		MD	pink (deep)	6.0	8.0	5.4
Cassandra^[13]	C. heracleifolia		blue		1.0	0.5
	C. montana var. grandiflora^[14]	M	white	7.0	12.0	4.0
	C. rehderiana^[15]		yellow (pale)	2.5	8.0	2.5
	C. × durandii^[16]		blue (indigo)	10.0	2.5	1.0
Comtesse de Bouchaud^[17]		L	pink (rose)	15.0	2.5	1.0
Constance^[18]		A	pink (deep)	5.0	2.5	1.5
Daniel Deronda^[19]		E	blue (violet)	20.0	2.5	1.0
Elizabeth^[20]		M	pink (pale)	6.0	12.0	4.0
Ernest Markham^[21]		L	red (crimson)	15.0	4.0	1.0
Étoile violette^[22]		V	purple	10.0	4.0	1.5
Foxy^[23]		A	pink (pale)	5.0	2.5	1.5
Frances Rivis^[24]		A	blue (violet) / cream	5.0	2.5	1.5
Frankie^[25]		A	blue (violet) / cream	5.0	2.5	1.5
Freckles^[26]	C. cirrhosa var. purpurascens		yellow (pale)/maroon	5.0	4.0	1.0
Freda^[27]		M	pink (deep)	5.0	8.0	4.0
Fujimusume^[28]		E	blue (pale)	20.0	1.5	1.0
Gillian Blades^[29]		L	white	15.0	2.5	1.0
Gipsy Queen^[30]		L	purple	14.0	4.0	1.0
'Kugotia'^[31]		T	yellow	4.0	8.0	8.0
Hågelby Pink'^[32]		Vt	pink (pale)		4.0	1.0
'Zohapbi'^[33]		L	purple	10.0	3.0	1.5
Helsingborg^[34]		A	purple	5.0	2.5	1.5
Huldine^[35]		L	white	10.0	4.0	2.5
Jackmanii^[36]		L	purple	10.0	4.0	1.0
Jacqueline du Pré^[37]		L	pink (rose)	6.3	2.5	1.5
Joe^[38]	C. × cartmanii	F	white	4.0	1.5	0.5
Ken Donson^[39]		E	blue (deep)		3.0	0.5
Kermesina^[40]		V	red (crimson)	6.0	4.0	1.5
Lagoon^[41]	C. macropetala	A	blue (violet)	7.5	2.5	1.5
Lambton Park^[42]		T	yellow	7.0	8.0	4.0
Lasurstern^[43]		E	blue (lavender)	7.5	2.5	1.0
Madame Julia Correvon^[44]		V	red (claret)	12.5	4.0	1.5
Marie Boisselot^[45]		E	white	20.0	4.0	1.0
Markham's Pink^[46]		AD	pink	5.0	4.0	1.5
Mayleen^[47]		M	pink (pale)	7.0	12.0	2.5
Minuet^[48]		V	white/pink	5.0	4.0	1.0
Mrs Cholmondeley^[49]		E	blue (lavender)	20.0	2.5	1.0
Mrs George Jackman^[50]		E	white	18.0	2.5	1.0
Nelly Moser^[51]		E	pink	20.0	2.5	1.0
Niobe^[52]		E	red (ruby)	15.0	2.5	1.0
Pamela Jackman^[53]	C. alpina	A	blue (deep)	7.0	2.5	1.5
Pangbourne Pink^[54]		I	pink (mauve)	5.0	1.0	0.5
Paul Farges^[55]		Va	white	4.5	8.0	2.5
Pauline^[56]		Ad	blue		2.5	1.5
'Evisix'^[57]		I	blue (violet)	9.0	1.0	1.0
Pink Flamingo^[58]		A	pink (pale)	4.0	2.5	1.5
Poldice^[59]		V	violet/white		4.0	1.5
Polish Spirit^[60]		L	purple	9.0	4.0	1.0
Praecox^[61]		H	blue (pale)	2.0	4.0	2.5
Prince Charles^[62]		L	blue (violet)	10.0	2.5	1.0
Princess Diana^[63]		Tx	red (magenta)	10.0	4.0	1.0
Purpurea Plena Elegans^[64]		VD	purple/pink	5.0	2.5	1.0
Remembrance^[65]		LL	pink (deep)	12.0	2.5	1.5
Richard Pennell^[66]		E	purple	20.0	2.5	1.0
Roko-Kolla^[67]		LL	white	15.0	2.5	1.0
Sunset^[68]		E	red (magenta)	12.0	2.5	1.0
Tetrarose^[69]	C. montana var. rubens	M	pink (mauve)	7.5	8.0	2.5
The President^[70]		E	blue	18.0	2.5	1.0
Venosa Violacea^[71]		V	purple/white	10.0	2.5	1.0
Walenburg^[72]		V	purple/white		3.0	1.0
Warszawska Nike^[73]		EL	purple	18.0	2.5	1.0
Wesselton^[74]	C. macropetala	E	blue (pale)		2.5	1.5
White Columbine^[75]		A	white	5.0	2.5	1.5
Will Goodwin^[76]		EL	pale violet	15.0	2.5	1.0
Wisley Cream^[77]	C. cirrhosa		yellow (pale)	8.0	4.0	1.0
'Evipo001'^[78]		Vt	blue/red	13.0	4.0	1.5

Notes and References

1. Web site: RHS AGM Listing Oct 2016 (Ornamentals). Royal Horticultural Society. 7 January 2017.
2. Book: RHS A-Z encyclopedia of garden plants. 2008. Dorling Kindersley. United Kingdom. 978-1405332965. 1136.
3. Web site: RHS. Clematis 'Abundance'. 12 February 2020.
4. Web site: RHS. Clematis 'Alionushka'. 12 February 2020.
5. Web site: RHS. Clematis Anna Louise = 'Evithree'. 12 February 2020.
6. Web site: RHS. Clematis 'Apple Blossom'. 12 February 2020.
7. Web site: RHS. Clematis 'Arabella'. 12 February 2020.
8. Web site: RHS. Clematis Arctic Queen = 'Evitwo'. 12 February 2020.
9. Web site: RHS. Clematis 'Ballet Skirt'. 12 February 2020.
10. Web site: RHS. Clematis 'Bill MacKenzie'. 12 February 2020.
11. Web site: RHS. Clematis 'Blekitny Aniol'. 12 February 2020.
12. Web site: RHS. Clematis 'Broughton Star'. 12 February 2020.
13. Web site: Clematis heracleifolia 'Cassandra' . RHS. 12 February 2020.
14. Web site: RHS. Clematis montana var. grandiflora. 12 February 2020.
15. Web site: RHS. Clematis rehderiana. 12 February 2020.
16. Web site: RHS. Clematis × durandii. 12 February 2020.
17. Web site: RHS. Clematis 'Comtesse de Bouchaud'. 12 February 2020.
18. Web site: RHS. Clematis 'Constance'. 12 February 2020.
19. Web site: RHS. Clematis 'Daniel Deronda'. 12 February 2020.
20. Web site: RHS. Clematis 'Elizabeth'. 12 February 2020.
21. Web site: RHS. Clematis 'Ernest Markham'. 12 February 2020.
22. Web site: RHS. Clematis 'Étoile violette'. 12 February 2020.
23. Web site: RHS. Clematis 'Foxy'. 12 February 2020.
24. Web site: RHS. Clematis 'Frances Rivis'. 12 February 2020.
25. Web site: RHS. Clematis 'Frankie'. 12 February 2020.
26. Web site: RHS. Clematis cirrhosa var. purpurascens 'Freckles'. 12 February 2020.
27. Web site: RHS. Clematis 'Freda'. 12 February 2020.
28. Web site: RHS. Clematis 'Fujimusume'. 12 February 2020.
29. Web site: RHS. Clematis 'Gillian Blades'. 6 January 2017.
30. Web site: RHS. Clematis 'Gipsy Queen'. 12 February 2020.
31. Web site: RHS. Clematis Golden Tiara = 'Kugotia'. 12 February 2020 .
32. Web site: RHS. Clematis 'Hagelby Pink'. 9 July 2013.
33. Web site: RHS. Clematis Happy Birthday = 'Zohapbi' . 12 February 2020.
34. Web site: RHS. Clematis 'Helsingborg'. 12 February 2020.
35. Web site: RHS. Clematis 'Huldine'. 12 February 2020.
36. Web site: RHS. Clematis 'Jackmanii'. 12 February 2020.
37. Web site: RHS. Clematis 'Jacqueline du Pré'. 12 February 2020.
38. Web site: RHS. Clematis × cartmanii 'Joe'. 12 February 2020.
39. Web site: RHS. Clematis 'Ken Donson'. 12 February 2020.
40. Web site: RHS. Clematis 'Kermesina'. 12 February 2020.
41. Web site: RHS. Clematis macropetala 'Lagoon'. 12 February 2020.
42. Web site: RHS. Clematis 'Lambton Park'. 12 February 2020 .
43. Web site: RHS. Clematis 'Lasurstern'. 12 February 2020.
44. Web site: RHS. Clematis 'Madame Julia Correvon'. 12 February 2020.
45. Web site: RHS. Clematis 'Marie Boisselot'. 12 February 2020.
46. Web site: RHS. Clematis 'Markham's Pink'. 12 February 2020.
47. Web site: RHS. Clematis 'Mayleen'. 12 February 2020.
48. Web site: RHS. Clematis 'Minuet'. 12 February 2020.
49. Web site: RHS. Clematis 'Mrs Cholmondeley'. 12 February 2020.
50. Web site: RHS. Clematis 'Mrs George Jackman'. 12 February 2020.
51. Web site: RHS. Clematis 'Nelly Moser'. 12 February 2020.
52. Web site: RHS. Clematis 'Niobe'. 12 February 2020.
53. Web site: RHS. Clematis alpina 'Pamela Jackman'. 12 February 2020.
54. Web site: RHS. Clematis 'Pangbourne Pink'. 12 February 2020.
55. Web site: RHS. Clematis 'Paul Farges'. 12 February 2020.
56. Web site: RHS. Clematis 'Pauline'. 7 January 2017.
57. Web site: RHS. Clematis Petit Faucon = 'Evisix'. 12 February 2020.
58. Web site: RHS. Clematis 'Pink Flamingo'. 12 February 2020.
59. Web site: RHS. Clematis 'Poldice'. 12 February 2020.
60. Web site: RHS. Clematis 'Polish Spirit'. 12 February 2020.
61. Web site: RHS. Clematis 'Praecox'. 12 February 2020.
62. Web site: RHS. Clematis 'Prince Charles'. 12 February 2020 .
63. Web site: RHS. Clematis 'Princess Diana'. 12 February 2020.
64. Web site: RHS. Clematis 'Purpurea Plena Elegans'. 12 February 2020 .
65. Web site: RHS. Clematis 'Remembrance'. 7 January 2017.
66. Web site: RHS. Clematis 'Richard Pennell'. 12 February 2020.
67. Web site: RHS. Clematis 'Roko-Kolla'. 12 February 2020.
68. Web site: RHS. Clematis 'Sunset'. 12 February 2020.
69. Web site: RHS. Clematis montana var. rubens 'Tetrarose'. 12 February 2020.
70. Web site: RHS. Clematis 'The President'. 12 February 2020.
71. Web site: RHS. Clematis 'Venosa Violacea'. 12 February 2020.
72. Web site: RHS. Clematis 'Walenburg'. 7 January 2017.
73. Web site: Clematis 'Warszawska Nike' . RHS. 12 February 2020.
74. Web site: Clematis macropetala 'Wesselton' . RHS. 12 February 2020.
75. Web site: Clematis 'White Columbine'. RHS. 12 February 2020.
76. Web site: Clematis 'Will Goodwin' . RHS. 12 February 2020 .
77. Web site: Clematis cirrhosa 'Wisley Cream'. RHS. 12 February 2020.
78. Web site: Clematis 'Wisley = 'Evipo001' . RHS. 12 February 2020 .