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| − | Azalea (from Greek azaleas, dry: Linnaeus believed them to grow in dry locations). Ericaceae. See
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| − | Rhododendron.
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| − | The genus Azalea seems botanically inseparable from Rhododendron; there are no characters by which the two genera can be clearly separated, though if one looks only at the American species and those generally in cultivation, the differences seem to be clear enough, but if one takes into consideration the whole genus, particularly as it is represented in Asia, where it reaches its greatest development, one finds many species that have the characters of these two groups combined in various ways and render a natural and clear separation impossible.
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| − | Most of the species retain the same specific or varietal name under Rhododendron, except the following:
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| − | A. alba. Sweet-Rhododendron rosmarinifolium.—A. balsaminaeflora, Carr.-R. indicum var. rosiflorum.—A. californica, Buckl.-> R. occidentale.—-A. Danielsiana Paxt. R. indicum var. macranthum.—A. ledifolia, Hook.-R. rosmarinifolium.—A. liliiflora, Poir.-R. rosmarinifolium.—A. lutea. Linn.-R. calendulaceum.— A. mollis, Blume-R. sinense.—A. mollis, Miq.-R. japonicum.— A. mucronata, Blume-- R. rosmarinifolium.—A. pontica. Linn. - R. luteum.—A. procumbens, Linn.-Loiseleuria procurabens.— A. punicea, Sweet-R. rosmarinifolium.—A. reficulata, Koch-R. rhombicum.—A. Rollisonii. Hort.-R. indicum var. rosiflorum. —A. Sieboldii, Miq.—R. indicum.—A. speciosa, Willd.—R. calendulaceum.—A. squamata, Lindl.-K. Farrerae.
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| − | {{Taxobox
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| − | | name = ''Azalea''
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| − | | image = azalea.750pix.jpg
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| − | | image_caption = ''Rhododendron'' 'Hinodegiri'
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| − | | regnum = [[Plantae]]
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| − | | divisio = [[Flowering plant|Magnoliophyta]]
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| − | | classis = [[Magnoliopsida]]
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| − | | ordo = [[Ericales]]
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| − | | familia = [[Ericaceae]]
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| − | | genus = ''[[Rhododendron]]''
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| − | | subgenus = ''[[Pentanthera]]'' <br> and <br> ''[[Tsutsuji]]''
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| − | | subdivision_ranks = Species
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| − | | subdivision =
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| − | ''see text''
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| − | ----
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| − | Source: The [[Rhododendron]] page, and some research.
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| − | }}
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| − | '''Azaleas''' are flowering [[shrub]]s making up part of the genus ''[[Rhododendron]]''. Originally azaleas were classed as a different genus of [[plant]], but now they are recognised as two of the eight sub-genera of rhododendrons - subgenus ''[[Pentanthera]]'' (deciduous), and subgenus ''Tsutsuji'' (evergreen).
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| − | ==Differences==
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| − | [[Image:Azalee2.jpg|thumb|left|A bush of azaleas.]]
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| − | One major difference between azaleas and the rest
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| − | of the rhododendron genus is their size. Another is their [[flower]] growth; rhododendrons grow their flowers in stripers, while most azaleas have terminal [[bloom]]s (one flower per flower [[Plant stem|stem]]). However, they have so many stems that during the flowering season they are a solid mass of [[colour]]. Azaleas are recognised by these flowers blooming all at once, in a showy display for a month or two in [[spring (season)|spring]]. The exception to this rule is a small group of azaleas which grow their flowers in tight terminal clusters.
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| − | [[Image:whiteazalea.jpg|left|thumb|An azalea flower close up]]
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| − | The [[Satsuki azalea]] group, derived from ''Rhododendron indicum'' and related species, are very popular.
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| − | A [[Korean wine#Flower wines|traditional alcoholic beverage]] made from azalea blossoms, called ''Tugyonju'' (literally "azalea wine"), is produced in Korea.<ref>[http://www.skynews.co.kr/skynews_main/ENGLISH/window_on_korea/wok_028.htm Korean tradition]</ref>
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| − | Also, azaleas are the most common toxic plant that dogs ingest.{{fact|date=October 2008}}
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| − | ==Cultivation==
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| − | Plant enthusiasts have created azaleas for hundreds of years. This human genetic modification has produced over 10,000 different [[cultivar]]s which are propagated by cuttings. Azalea [[seed]]s can also be collected and [[germination|germinated]].
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| − | Azaleas grow best in well-drained soil or in plant pots in a cool, shady position. They are easily damaged by excessive soil moisture and grow best in acidic soil (4.5 - 6.0 pH).<ref>[http://hgic.clemson.edu/factsheets/hgic1059.htm Clemson University Factsheet]</ref> [[Fertilizer]] is optional, although some species do need regular [[pruning]].
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| − | Several commercial nurseries in [[Semmes, Alabama]], a suburb of Mobile, are major national suppliers of azaleas in the U.S.
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| − | ==Disease==
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| − | Azalea leaf gall can be particularly destructive to azalea leaves during the early spring. Hand picking infected leaves is the recommended method of control. Information on azalea leaf gall can be found on [[Cornell University]]'s Plant Disease Diagnostic Clinic web site. [http://plantclinic.cornell.edu/factsheets/azaleagall/azaleagall.htm Azalea Leaf Gall Fact Sheet]
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| − | [[Image:Azaleas JH.jpg|thumb|right|Fifty year old Azalea]]
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| − | [[Image:redazalea.jpg|right|thumb|A close up of a red azalea flower]]
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| − | ==See also==
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| − | * [[Rhododendron]]
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| − | * [[List of azalea diseases]]
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| − | * [[List of plants poisonous to equines]]
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| − | ==References==
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| − | {{reflist|2}}
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| − | == External links ==
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| − | *[http://en.wikipedia.org/wiki/Azalea Wikipedia Azalea article]
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| − | *[http://www.azaleas.org/ Azalea Society of America]
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| − | *[http://www.usna.usda.gov/Gardens/collections/azalea.html Azalea Collection of the U.S. National Arboretum]
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| − | *[http://www.rhododendron.org/ American Rhododendron Society]
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| − | *[http://www.rhodo.citymax.com/page/page/38017.htm Rhododendron Society of Vancouver, British Columbia, Canada]
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| − | *[http://www.victoriarhodo.ca/ Rhododendron Society of Victoria, British Columbia, Canada]
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| − | *[http://www.rhodoniagara.org/ Rhododendron Society of Niagara, Ontario, Canada]
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| − | *[http://www.encoreazalea.com Encore Azalea]
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