List of Award of Garden Merit maples

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The maples belong to the genus Acer, an important group of mainly deciduous trees and shrubs in the family Sapindaceae, which are widely cultivated throughout the temperate northern hemisphere. Some, such as Acer griseum, have ornamental bark; but most are valued in cultivation for their brilliant autumn foliage in shades of yellow, orange and red. A vast number of cultivars have been developed for garden use. The palmate maple Acer palmatum alone has thousands of cultivars, many of which originate in Japan where the plant is especially prized for its compact size and elegant domed shape. Many maple species lend themselves to bonsai treatment. [1]

All tolerate a range of growing conditions, but prefer a partially shaded, sheltered position in soil that is well-drained but also retains moisture. Most are reasonably hardy down to −20 °C (−4 °F) or so. The following is a selected list of cultivars which in the UK have gained the Royal Horticultural Society's Award of Garden Merit (confirmed 2018). [2]

SpeciesCultivar nameYearRefAutumn colourHeightSpreadImage
A. campestre 1993 [3] yellow/red12m8m Acer campestre 008.jpg
A. cappadocicum 'Aureum'1993 [4] yellow12m8m
A. cappadocicum'Rubrum'1993 [5] yellow12m8m
A. davidii 'George Forrest'1993 [6] yellow12m8m
A. × freemanii Autumn Blaze='Jeffersred'2012 [7] orange/red12m8m Autumn Blaze Maple Foliage.jpg
A. griseum 1993 [8] orange/red12m8m Acer griseum JPG01c.jpg
A. japonicum 'Aconitifolium'1993 [9] red8m8m Acer japonicum 'Aconitifolium' JPG1b.jpg
A. japonicum'Vitifolium'1993 [10] red8m8m Acer japonicum 'Vitifolium' JPG1Fub.jpg
A. micranthum 2012 [11] orange8m4m Acer micranthum foliage.JPG
A. negundo 'Winter Lightning'2012 [12] yellow10m8m
A. negundo var. violaceum2012 [13] purple12m8m
A. palmatum 'Beni-maiko'1993 [14] yellow/orange/red1.5m1.5m
A. palmatum'Beni-tsukasa'1993 [15] orange2.5m2.5m
A. palmatum'Bloodgood'1993 [16] red4m4m Acer palmatum Bloodgood 13zz.jpg
A. palmatum'Burgundy Lace'1993 [17] purple4m4m
A. palmatum'Chitose-yama'1993 [18] red2.5m2.5m
A. palmatum'Crimson Queen'1993 [19] red/purple2.5m2.5m Acer palmatum Crimson Queen 0zz.jpg
A. palmatum'Elegans'2012 [20] yellow/orange/red2.5m2.5m
A. palmatum'Garnet'1993 [21] red/purple1.5m2.5m Acer palmatum 'Dissectum Garnet' 01 by Line1.jpg
A. palmatum'Inaba-shidare'1993 [22] red/purple2.5m2.5m Acer palmatum 'Inaba Shidare' IMG 2740.jpg
A. palmatum'Katsura'2002 [23] orange4m4m Acer palmatum katsura002.jpg
A. palmatum'Orange Dream'2012 [24] orange/yellow4m4m
A. palmatum'Orangeola'2012 [25] orange/red4m2.5m
A. palmatum'Ornatum'2012 [26] red3m1.5m Real Jardin Botanico Juan Carlos I (RPS 07-06-2014) Acer Palmatum Ornatum.png
A. palmatum'Osakazuki'1993 [27] red/pink4m4m Acer palmatum 'Osakazuki' JPG1c.jpg
A. palmatum'Red Pygmy'1993 [28] red/purple1.5m1.5m Acer Palmatum 'Red Pygmy'.jpg
A. palmatum'Sango-kaku'1993 [29] yellow/red6m4m
A. palmatum'Seiryu'1993 [30] yellow/orange/red4m4m Acer palmatum.JPG
A. palmatum'Shin-deshojo'2012 [31] red/orange2.5m2.5m
A. palmatum'Shish geshira'2012 [32] orange4m2.5m
A. palmatum'Trompenburg'2002 [33] orange/red4m4m
A. palmatum'Villa Taranto'2012 [34] yellow4m2.5m
A. platanoides 'Crimson King'1993 [35] purple/crimson12m8m Acer platanoides Crimson King 0zz.jpg
A. platanoidesPrinceton Gold='Prigo'2012 [36] yellow12m8m
A. pseudoplatanus 'Brilliantissimum'1993 [37] pink/green/cream8m8m
A. rubrum 'October Glory'1993 [38] red12m8m 'Acer rubrum' "October Glory" Beale Arboretum - West Lodge Park - Hadley Wood - Enfield London.jpg
A. rubrumRed Sunset='Franksred'2012 [39] red12m8m Acer rubrum Red Sunset 9zz.jpg
A. shirasawanum 'Aureum'1993 [40] yellow8m8m Acer shirasawanum 'Aureum' J2.JPG
A. tegmentosum 2012 [41] yellow12m8m Acer tegmentosum bark.jpg
A. triflorum 2002 [42] orange12m8m Acer triflorum fall leaves.jpg

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Acer platanoides, commonly known as the Norway maple, is a species of maple native to eastern and central Europe and western Asia, from Spain east to Russia, north to southern Scandinavia and southeast to northern Iran. It was introduced to North America in the mid-1700s as a shade tree. It is a member of the family Sapindaceae.

<i>Acer rubrum</i> Maple tree native in North America

Acer rubrum, the red maple, also known as swamp maple, water maple, or soft maple, is one of the most common and widespread deciduous trees of eastern and central North America. The U.S. Forest Service recognizes it as the most abundant native tree in eastern North America. The red maple ranges from southeastern Manitoba around the Lake of the Woods on the border with Ontario and Minnesota, east to Newfoundland, south to Florida, and southwest to East Texas. Many of its features, especially its leaves, are quite variable in form. At maturity, it often attains a height around 30 m (100 ft). Its flowers, petioles, twigs, and seeds are all red to varying degrees. Among these features, however, it is best known for its brilliant deep scarlet foliage in autumn.

<i>Acer campestre</i> Species of flowering plant in the lychee family Sapindaceae

Acer campestre, known as the field maple, is a flowering plant species in the family Sapindaceae. It is native to much of continental Europe, Britain, southwest Asia from Turkey to the Caucasus, and north Africa in the Atlas Mountains. It has been widely planted, and is introduced outside its native range in Europe and areas of USA and Western Australia with suitable climate.

<i>Acer negundo</i> Species of tree commonly known as boxelder maple

Acer negundo, the box elder, boxelder maple, Manitoba maple or ash-leaved maple, is a species of maple native to North America. It is a fast-growing, short-lived tree with opposite, compound leaves. It is sometimes considered a weedy or invasive species, and has been introduced to and naturalized throughout much of the world, including in South America, Australia, New Zealand, South Africa, much of Europe, and parts of Asia.

<span class="mw-page-title-main">University of Delaware Botanic Gardens</span> Botanical Gardens at University of Delaware, Delaware, United States

The University of Delaware Botanic Gardens are botanical gardens and an arboretum located on the campus of the University of Delaware, in Newark, Delaware, United States. The gardens are open to the public without charge.

<i>Acer griseum</i> Species of maple

Acer griseum, the paperbark maple or blood-bark maple, is a species of flowering plant in the family Sapindaceae, native to central China. Acer griseum is found in the Chinese provinces of Gansu, Henan, Hubei, Hunan, Shaanxi, Shanxi and Sichuan, at altitudes of 1,500–2,000 m (4,921–6,562 ft).

<i>Rheum palmatum</i> Species of flowering plant

Rheum palmatum is a species of flowering plant in the knotweed family Polygonaceae. It is commonly called Chinese rhubarb, ornamental rhubarb, Turkey rhubarb or East Indian rhubarb.

<i>Acer cappadocicum</i> Species of maple

Acer cappadocicum, the Cappadocian maple, is a maple native to Asia, from central Turkey east along the Caucasus, the Himalayas, to southwestern China.

<span class="mw-page-title-main">Maple</span> Genus of flowering plants

Acer is a genus of trees and shrubs commonly known as maples. The genus is placed in the soapberry family, Sapindaceae, along with lychee and horse chestnut. There are approximately 132 species, most of which are native to Asia, with a number also appearing in Europe, northern Africa, and North America. Only one species, Acer laurinum, extends to the Southern Hemisphere. The type species of the genus is the sycamore maple, Acer pseudoplatanus, the most common maple species in Europe. Maples usually have easily recognizable palmate leaves and distinctive winged fruits. The closest relatives of the maples are the horse chestnuts. Maple syrup is made from the sap of some maple species. It is one of the most common genera of trees in Asia. Many maple species are grown in gardens where they are valued for their autumn colour.

<i>Acer shirasawanum</i> Species of maple

Acer shirasawanum, the Shirasawa maple or fullmoon maple, is a species of maple native to Japan, on central and southern Honshū, Shikoku, and Kyūshū.

<i>Acer japonicum</i> Species of maple

Acer japonicum, fullmoon maple, or downy Japanese-maple, is a species of maple native to Japan, on Honshū, Hokkaidō, Kyūshū, and also southern Korea.

<i>Escallonia</i> Genus of shrubs

Escallonia is a genus of shrubs and trees in the family Escalloniaceae. They are native to North and South America.

<i>Hesperantha coccinea</i> Species of flowering plant

Hesperantha coccinea, the river lily, or crimson flag lily, is a species of flowering plant in the iris family Iridaceae, native to Southern Africa and Zimbabwe.

<i>Acer truncatum</i> Species of maple

Acer truncatum, the Shantung maple, Shandong maple, or purpleblow maple, is a maple native to northern China, in the provinces of Gansu, Hebei, Henan, Jiangsu, Jilin, Liaoning, Inner Mongolia, Shaanxi, Shandong, Shanxi, and to Korea.

<i>Acer lobelii</i> Species of maple

Acer lobelii, known as Lobel's maple or L'Obel's maple is a rare maple tree native to southern Italy and the western Balkans. Synonyms include Acer platanoides subsp. lobelii and Acer cappadocicum Gled. subsp. lobelii (Ten.) De Jong.

<i>Farfugium japonicum</i> Species of flowering plant

Farfugium japonicum is a species of flowering plant in the family Asteraceae, also known as leopard plant, green leopard plant or tractor seat plant. It is native to streams and seashores of Japan, where it is called tsuwabuki (石蕗).

<i>Cercidiphyllum japonicum</i> Species of tree

Cercidiphyllum japonicum, known as the Katsura, is a species of flowering tree in the family Cercidiphyllaceae native to China and Japan. It is sometimes called caramel tree for the light caramel smell it emits during leaf fall.

<i>Acer palmatum</i> Species of maple

Acer palmatum, commonly known as Japanese maple, palmate maple, or smooth Japanese maple (Korean: danpungnamu, 단풍나무, Japanese: irohamomiji, イロハモミジ, or momiji,, is a species of woody plant native to Korea, Japan, China, eastern Mongolia, and southeast Russia. Many different cultivars of this maple have been selected and they are grown worldwide for their large variety of attractive forms, leaf shapes, and spectacular colors.

References

  1. ↑ Brickell, Christopher, ed. (2008). The Royal Horticultural Society A-Z Encyclopedia of Garden Plants. United Kingdom: Dorling Kindersley. p. 64. ISBN   9781405332965.
  2. ↑ "AGM Plants - Ornamental" (PDF). www.rhs.org. Royal Horticultural Society. November 2018. p. 1. Retrieved 18 February 2019.
  3. ↑ "Acer campestre". www.rhs.org. RHS. Retrieved 24 September 2019.
  4. ↑ "Acer cappadocicum 'Aureum'". www.rhs.org. RHS. Retrieved 24 September 2019.
  5. ↑ "Acer cappadocicum 'Rubrum'". www.rhs.org. RHS. Retrieved 24 September 2019.
  6. ↑ "Acer davidii 'George Forrest'". www.rhs.org. RHS. Retrieved 24 September 2019.
  7. ↑ "Acer × freemanii 'Jeffersred'". www.rhs.org. RHS. Retrieved 24 September 2019.
  8. ↑ "Acer griseum". www.rhs.org. RHS. Retrieved 24 September 2019.
  9. ↑ "Acer japonicum 'Aconitifolium'". www.rhs.org. RHS. Retrieved 24 September 2019.
  10. ↑ "Acer japonicum 'Vitifolium'". www.rhs.org. RHS. Retrieved 24 September 2019.
  11. ↑ "Acer micranthum". www.rhs.org. RHS. Retrieved 24 September 2019.
  12. ↑ "Acer negundo 'Winter Lightning'". www.rhs.org. RHS. Retrieved 24 September 2019.
  13. ↑ "Acer negundo var. violaceum". www.rhs.org. RHS. Retrieved 24 September 2019.
  14. ↑ "Acer palmatum 'Beni-maiko'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  15. ↑ "Acer palmatum 'Beni-tsukasa'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  16. ↑ "Acer palmatum 'Bloodgood'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  17. ↑ "Acer palmatum 'Burgundy Lace'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  18. ↑ "Acer palmatum 'Chitose-yama'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  19. ↑ "Acer palmatum 'Crimson Queen'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  20. ↑ "Acer palmatum 'Elegans'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  21. ↑ "Acer palmatum 'Garnet'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  22. ↑ "Acer palmatum 'Inaba-shidare'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  23. ↑ "Acer palmatum 'Katsura'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  24. ↑ "Acer palmatum 'Orange Dream'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  25. ↑ "Acer palmatum 'Orangeola'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  26. ↑ "Acer palmatum 'Ornatum'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  27. ↑ "Acer palmatum 'Osakazuki' (d)". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  28. ↑ "Acer palmatum 'Red Pygmy'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  29. ↑ "Acer palmatum 'Sango-kaku'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  30. ↑ "Acer palmatum 'Seiryu'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  31. ↑ "Acer palmatum 'Shin-deshojo'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  32. ↑ "Acer palmatum 'Shish geshira'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  33. ↑ "Acer palmatum 'Trompenburg'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  34. ↑ "Acer palmatum 'Villa Taranto'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  35. ↑ "Acer platanoides 'Crimson King'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  36. ↑ "Acer platanoidesPrinceton Gold='Prigo' (PBR)". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  37. ↑ "Acer pseudoplatanus 'Brilliantissimum'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  38. ↑ "Acer rubrum 'October Glory'". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  39. ↑ "Acer rubrum Red Sunset ('Franksred')". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  40. ↑ "Acer shirasawanum 'Aureum' (d)". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  41. ↑ "Acer tegmentosum". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
  42. ↑ "Acer triflorum". Royal Horticultural Society. 2017. Retrieved 24 September 2019.
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