Rhododendron ponticum is an ecologically damaging exotic weed in the British Isles, which spreads predominantly by seed. They have simple, simple leaves. Rhododendron ponticum, Morar. Add to Cart Add to wish list. Foliage Description: Leaves lanceolate, recurved, up to 7" long with thick white to tawny indumentum. A number of insects either target rhododendrons or will opportunistically attack them. infected by Phytophthora kernoviae. Accessed: 2020 May 16. In ideal conditions R. ponticum can form dense stands which can inhibit the regeneration of native species and alter plant and animal communities. The genus Rhododendron is part of the heather family (Ericaceae). Produces terminal trusses of 10 to 15 purple, funnel-shaped flowers in spring. Retrieved from "https://species.wikimedia.org/w/index.php?title=Rhododendron_ponticum_subsp._ponticum&oldid=6229304" So, based on all information available to me, it appears that album is the only valid R. ponticum cultivar name. Shaw M.W., 1984, Rhododendron ponticum – ecological reasons for the success of an alien species in Britain and features that may assist in its control. Definition of RHODODENDRON PONTICUM in the Definitions.net dictionary. Rhododendron. variegatum has variegated foliage, and R. ponticum var. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. The vast majority of Rhododendron species are native to the eastern Himalaya and southeast Tibet, along with the islands of Java, Sumatra, Borneo, New Guinea, and the Philippines. It produces abundant seed and also suckers, forming dense thickets. ponticum: of Pontus, NE Turkey. England demonstrated that the invasion of Rhododendron ponticum has detrimental effects on the fruiting of larger fungi. Reason For Introduction Ornamental. Reversion to the non-variegated form does occur.-10° F, late, 2/3/? datasets have provided data to the NBN Atlas for this species.. Browse the list of datasets and find organisations you can join if you are interested in participating in a survey for species like Rhododendron ponticum L. Aspects of Applied Biology. Truss holds 6-20 flowers. Rhododendron ponticum belongs to the Flowering Plants group. Die Rhododendren (Singular laut Duden: der oder das Rhododendron, von griechisch ῥόδον = rhodon für „Rose“ und δένδρον = dendron für „Baum“) sind eine Pflanzengattung innerhalb der Familie der Heidekrautgewächse (Ericaceae). “Rhododendron ponticum was first brought to Britain, probably from Spain or Portugal, around 1763 for botanical gardens and used on big estates as cover for game birds. Tracheophyta › Magnoliopsida › Ericaceae › Rhododendron › Rhododendron ponticum. USDA, ARS, Germplasm Resources Information Network. It was introduced as a rootstock species for less hardy Rhododendron … Fossil records suggest that R. ponticumwas once widespread in Europe including western Ireland (Jessen, 1948) but that extreme cold and dry lowland conditions probably result… But the shrub has spread out of control with huge damage to many native woodlands, heaths and other wild places like the Snowdonia national park. Shepherd R.C.H., 2004, Pretty but poisonous. Rhododendron ponticum, native to southern Europe and south west Asia was introduced into the UK in the 18th Century. Being popular shrubs in many landscapes, the topic of how to trim a rhododendron bush, including wild varieties like mountain laurel, is a frequently asked question.. Pruning Rhododendron Guide This particular Rhododendron is a close relative to laurel species, and thus behaves like laurel. NM6792: Rhododendron ponticum, Morar taken 10 days ago, near to Morar, Highland, Great Britain. But the shrub has spread out of control with huge damage to many native woodlands, heaths and other wild places like the Snowdonia national park. Rhododendron ponticum is a highly invasive species affecting woodland in the UK.It is also a host to two particularly significant diseases affecting our woodlands - Phytophthora ramorum and Phytophthora kernoviae.To control their spread, the eradication of rhododendron, usually by cutting and removal, is an accepted management practice. Other invasive shrubs include Rhododendron ponticum, cherry laurel and snowberry. Rhododendron ponticum L.. Synonyms: R. lancifolium Moench; R. speciosum Salisb. Many species of this Native Woodland Scheme Information Note No. 0-600 m (Eel Crags, Cumberland). “Rhododendron ponticum was first brought to Britain, probably from Spain or Portugal, around 1763 for botanical gardens and used on big estates as cover for game birds. datasets have provided data to the NBN Atlas Scotland for this species.. Browse the list of datasets and find organisations you can join if you are interested in participating in a survey for species like Rhododendron ponticum L. baeticum, an endangered species present in limited and vulnerable populations as a Tertiary relict in the southern Iberian Peninsula, was attained. Height: 3 feet in 10 years. Missouri Botanical Garden. $15.99 shipping. Deadly parts: The entire plant. Alien Bloom.jpg 800 × 533; 50 KB. Taking over the moorland behind the Cross and village, A path still gets through to the 80m summit in the background. Scientific name Source Rhododendron ponticum subsp. Cultivated as an ornamental and ground-cover plant, and widely naturalized in Britain, Ireland, Belgium, Netherlands Evergreen. Rounded. Section: Ponticum. Habit. I investigated how inbreeding and outcrossing affect seed production and germination in a wild population of this species in Ireland. Caution: Rhododendron ponticum is an invasive plant. Actually, in the United Kingdom, rhododendrons grow so prolifically they consider them invasive. They are native to Bulgaria, Russia, Spain, Georgia, Lebanon, Portugal, and Turkey. Rhododendron ponticum arrived from Gibraltar in 1763 and gradually crept north to be planted in parks, gardens and, particularly damaging, shooting estates … Pollination of invasive Rhododendron ponticum (Ericaceae) in Ireland. Price: $25.00. The rhododendron is a plant hated in the UK by almost anyone, who deals with nature conservation, and for a good reason. More sizes. Bloom Time: Late Midseason. Life Cycle Comments Plant Habit: Usually dense and rounded shrub. album, a form with white flowers, R. ponticum var. Странджанската зеленика е висок вечнозелен храст със силно разклонено стъбло. Thought to be spread by water-splashing, its effects on rhododendrons are often not very severe, causing limited stem die-back. Rhododendrons are another genus of flowering plants introduced to Britain by the Victorians in the late 18 th Century. 5: 231-242. An evergreen, perennial shrub, R. Reproductive biology of the invasive exotic shrub, Rhododendron ponticum L. (Ericaceae). Today, hundreds of sun-loving, cold hardy cultivars available in nurseries have Catawba rosebay (Rhododendron catawbiense) in their parentage. cheiranthifolium a compact variety with narrow and wavy leaves, R. ponticum var. Members of the genus Rhododendron support the following specialized bee: Andrena (Andrena) cornelli. Cotoneaster microphyllus, Fagus sylvatica, but it is only Rhododendron ponticum which has had any serious impact on the native communities. Rhododendron ponticum often simply called rhododendron, is an evergreen shrub that has been widely cultivated as an attractive ornamental species. Decide what tool you need for your rhododendron size. Rhododendron ponticum is a large evergreen shrub which grows up to 8 m tall and is tolerant of a wide range of conditions and soil types (Maguire et al., 2008). Flowering. Rhododendron luteum, the yellow azalea or honeysuckle azalea, is a species of flowering plant in the heath family Ericaceae, native to southeastern Europe and southwest Asia. The showiest of all spring flowering plants, rhododendrons will produce a wealth of beautiful colourful blooms. Phonetic Spelling roh-do-DEN-dron IN-dih-kum This plant has low severity poison characteristics. $35.99 $ 35. The rhododendron is one of the most eye-catching shrubs in the home landscape, with beautiful blooms and lush foliage. This plant is native to the Black Sea Region and the Iberian Peninsula. An evergreen shrub naturalised on heathy and rocky hillsides, rocky stream banks and ravines, and as an understorey in woodland on acid soils. Rhododendron ponticum, called common rhododendron or pontic rhododendron, is a species of rhododendron. roseum (or R. ponticum 'Roseum') either. General information about Rhododendron ponticum (RHOPO) Black Sea, Caucasus. Rhododendron ponticum. 0 more photos VIEW GALLERY. It can grow quite tall with specimens regularly attaining 8 m. R. ponticum occurs in its wild habitats in isolated parts of Spain and Portugal and in larger populations in the mountains of E. Turkey, Georgia and adjoining countries. A number of insects either target rhododendrons or will opportunistically attack them. Rhododendron ponticum ~ by Lewis T here are many hundreds of species of Rhododendron, many of which produce impressive floral displays. Rhododendron ponticum 'Variegatum' Write a review. It is native to southern Europe and Asia. Description It is a dense, suckering shrub or small tree growing to 5 m tall, rarely 8 m. The leaves are evergreen , 618cm long and 25cm broad. a species of Rhododendron native to the Iberian Peninsula in southwest Europe and the Caucasus region in northern West Asia. Flowers are lavender purple. Species. Rhododendron Rhododendron. if you can get rid of this species, I'd recommend doing so. Above ground Rhododendron Ponticum Rhododendron Ponticum is a large evergreen shrub in appearance with dark oval long leaves between 6cm-20cm. Many species of this Native Woodland Scheme Information Note No. USDA Zone? ponticum, with a number of varieties recorded, R. ponticum var. Rhododendron ponticum is by far the worst host for it. Control Methods for Rhododendron ponticum. an attractive, blooming specimen in many landscapes and is fairly low maintenance when planted properly. Southern Indian Azalea is a small semi-evergreen shrub that grows up to 6' and is dense and spreading. Rhododendron ponticum L. Rhododendron ponticum L. is an accepted name This name is the accepted name of a species in the genus Rhododendron (family Ericaceae). ex Dum.Cours. There are two subspecies of Rhododendron ponticum, subsp. In the case of stipitate hydnums, removal of R. ponticum encouraged new fruiting not seen for many years (Watling 2005). Positive identification of a rhododendron from a picture is, as has been suggested, difficult. Rhododendron ponticumcan grow up to ten meters in height and can have a substantial amount of growth laterally. Rhododendron ponticum is by far the worst host for it. Rhododendron ponticum is the only rhododendron in NZ to sucker (i.e., sets down roots from its branches). More Information: Rhododendron ponticum. Flower colours. Differing forms of diterpenes occur in the leaves, flowers and nectar of Rhododendrons of each species, with some species not producing any at all, however Rhododendron ponticum … Before Rhododendron ponticum became invasive, it gained additional genetic material from introgression with, among others, Rhododendron catawbiense from the eastern USA, which is a much hardier species. Rhododendron ponticum (Pontic Rhododendron) is a species of shrub in the family Ericaceae. if you can get rid of this species, I'd recommend doing so. Herb Spady's Rhododendron Species Dictionary makes no mention of R. ponticum var. Rhododendron ponticum Rhododendron ponticum, commonly referred to simply as Rhododendron, is an evergreen shrub with beautiful purple or pink flowers.However, its beauty may be deceiving. Scientific Name: Rhododendron L. (Ericaceae) ponticum L. Related Plants 'Aunt Martha' 'Aureo Variegatum' 'Bud Flanagan' 'Dan's Early Purple' 'Frank Galsworth' 'Graziella' 'Lemon Ice' 'Michael Waterer' 'Silver Edge' 'Variegatum' Nursery Availability Call us at 1 315 4971058. ponticum L. : Royal Botanic Garden Edinburgh (2001) The genus Rhododendron comprises various groups of which we specialise in the following:. 25,99 € Verfügbar . This project was designed to devise methods to tackle the impact of Rhododendron ponticum long, 1 to 2 1 ⁄ 2 in. Rhododendron ponticum, called common rhododendron or pontic rhododendron, is a species of rhododendron.It is native to southern Europe and Asia.It is the state flower of Kashmir.It has become an Invasive species in North America.It is a dense,suckering, shrub or small Tree that usually grows to 5 meters tall,or rarely 8 meters. Insects. It is not native to Britain, but was first introduced in the late 18th Century. This allowed the invasive population of rhododendron in Britain and Ireland to become better adapted to the environment (e.g. View gallery. Pontische Alpenrose in German Pontische rododendron in Dutch ‘Blue Peter’ (a cross of Rhododendron ponticum) flowers are held in a tight dome (truss) and are lavender-blue with a dark purple blotch. Rhododendron bainbridgeanum 毛萼杜鵑; Rhododendron esetulosum 喙尖杜鵑; Rhododendron hirtipes 硬毛杜鵑; Rhododendron martinanum; Rhododendron selense 多變杜鵑. Predominant Flower Color: Purple, Lavender. Rhododendron ponticum is native to countries in the western and eastern Mediterranean such as Spain, Portugal and Turkey and also occurs eastwards through Asia into China. The flowers are 3.55cm diameter, violetpurple, often with small greenishyellow spots or streaks. Странджанска зеленика (Rhododendron ponticum) е растение с естествено разпространение в Югоизточна Европа и Северозападна Азия.. Описание. Rhododendron ponticum, called common rhododendron or pontic rhododendron, is a species of Rhododendron native to the Iberian Peninsula in southwest Europe and the Caucasus region in northern West Asia. Origin. Often maligned because of one unruly family member, namely the species ponticum, rhododendron is a truly magnificent genus at their best during this time of the year. It is hardy to zone (UK) 7. Rhododendron azaleoides hort. Media in category "Rhododendron ponticum" The following 70 files are in this category, out of 70 total. It is in leaf all year, in flower from May to June. It regenerates from seed freely and can form dense thickets. R. ponticum is difficult to eradicate, as its roots can make new shoots. Meaning of RHODODENDRON PONTICUM. ©Ryan Somma. Some non-native honeysuckles are invasive, and you even need to be careful with what roses you plant – Rosa rugosa is among the worst invasives we should not let out of our gardens. Dimensions: Height: 3 ft. 0 in. Apidologie 38 ,1–9. The record derives from WCSP (in review) (data supplied on 2012-03-23) which reports it as an accepted name with original publication details: Sp. Sow Right Seeds - Long Island Improved Brussel Sprout Seed for Planting - Non-GMO Heirloom Packet with Instructions to Plant a Home Vegetable Garden. For example, By forming extensive, single-species stands it effectively excludes native … Width: 2 ft. 0 in. Rhododendron ponticum in Ireland [43] and the United Kingdom) are invasive as introduced plants, spreading in woodland areas replacing the natural understory. NBN Atlas Scotland. There are over a thousand varieties of rhododendron. ed. Year naturalised. However, those that spread so voraciously are hybrids with the rhododendron ponticum. An aggressive invader, it damages habitats, poisons livestock and wild game, eradicates local flora and leave entire swathes of countryside barren. Flower/Truss Description: Campanulate, pale to deep lilac-pink to purple, usually spotted greenish yellow. Rhododendron ponticum. The lateral growth essentially allows the plant to 'jump' over obstacles where the roots cannot grow. buds Diseases . Rhododendron ponticum – super competitor. 3b). Thought to be spread by water-splashing, its effects on rhododendrons are often not very severe, causing limited stem die-back. Large-Flowered Evergreen Hybrid Rhododendrons are the drama queens of Spring and early Summer, producing stunning displays of showy flowers in big trusses against a backdrop of bold … It became especially popular on country estates, providing ornamental value as well as cover for game birds. Rhododendron ponticum is a severely invasive alien plant species in north-western Europe. Phytophthora (webpage) Phytophthora Symptom ID Guide (webpage) WSU Sudden Oak Death (webpage) Sudden Oak Death Education Program (webpage) Rhododendron … Excellent for use as a flowering hedge, screen or specimen. Rhododendron ponticum may never leave the British Isles now, and we may have to accept it as part of our native flora. Violet/Purple. Hand saws and pruning shears are helpful for smaller, less established branches, or when you are cutting less of the rhododendron. It has become an Invasive species in North America. Description: This species was first introduced to parks, gardens, and demesnes in Britain and Ireland in the 1700’s. It has been widely distributed as an ornamental species due to its attractive flowers, and can subsequently Photo by: Hans Eiberg. Rhododendron ponticum est la fleur symbole de la région du Jammu-et-Cachemire en Inde. Rhododendron ponticum is an established non-native invasive species within the UK, threatening a variety of natural and semi-natural habitats and the associated flora and fauna. It is a dense,suckering, shrub or small Tree that usually grows to 5 meters tall,or rarely 8 meters. There have, however, also been many outbreaks in gardens, amenity areas and woodland, frequently associated with infected Rhododendron ponticum. Rhododendron ponticum Name Synonyms Azalea gandavensis K.Koch Rhododendron azaleoides hort. Plants in this family can form mycorrhizae. Ethnopharmacological relevance: Rhododendron ponticum L. (Ericaceae) is used for the treatment of inflammatory diseases and to alleviate rheumatic pain and against toothache in Turkish traditional medicine. Rhododendron ponticum was intentionally introduced into Ireland from the 1760s onwards (Higgins, 2008). Size: see below. Some species (e.g. Rhododendron is a large evergreen shrub (growing up to 8m tall) that was introduced to Ireland as an ornamental plant in the 18th Century from Asia and north-west China. Rhododendron ponticum is an evergreen Shrub growing to 5 m (16ft 5in). 3 As an invasive species, Rhododendron ponticum Er zijn Rhododendrons met een opvallende bonte bladkleur met geel-groene bladeren, maar de meeste hebben groene bladeren. Rhododendron Graziella 25-30cm - Rhododendron ponticum . It is an introduced species, spreading in woodland areas and replacing the natural understory. Homonyms Rhododendron ponticum L. Common names Pontian rhododendron in English Pontian rhododendron in language. Qty. isolated pink purple rhododendron on white background - rhododendron stock pictures, royalty-free photos & images. Rhododendron ponticum was first brought to Britain, probably from Spain or Portugal, around 1763 for botanical gardens and used on big estates as … Rhododendron Species: ponticum Family: Ericaceae Life Cycle: Woody Country Or Region Of Origin: Bulgaria, Lebanon, Caucasus Wildlife Value: Members of the genus Rhododendron support the following specialized bee: Andrena (Andrena) cornelli. Stout, J.C. (2007b). Altering ecosystem processes in a similar way to R. maximum via non-additive decomposition may be a driver behind the success of the related Rhododendron ponticum L. Following its introduction to Britain from Spain in 1763 as an ornamental shrub, R. ponticum has become a highly damaging invader of native habitats (Cross, 1975). Ecology . … It is naturalized in Ireland, the U.K. and much of western Europe as well as in parts of New Zealand. - 5 ft. 0 in. Older and more established rhododendrons may need a chainsaw to cut through the large woody branches, especially toward the middle of the plant. Characteristics: About PLANTS Characteristics Conservation Plant Characteristics Data Definitions. It is native through Asia into China, and also occurs in Spain, Portugal and Turkey. Rhododendron ponticum in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. 2 562 1762 The Plant List link: Rhododendron ponticum L. (Source: KewGarden WCSP) Tropicos link: Rhododendron ponticum L. Photos Plants . Its main and most continuous natural distribution is in the region of the Black Sea, although it is also native in parts of Portugal and southern Spain. Rhododendron ponticum has become invasive in Ireland and the United Kingdom. Case reports. It was introduced to the United Kingdom and subsequently Ireland in the eighteenth century as an ornamental species and as game cover . Rhododendron Cat Album - White, Slight Pink Blooms - Grows Seven Feet Tall (8" to 12" Wide Plant- Typically Two Gallon) 5.0 out of 5 stars 2. Wildform Rhododendron Variegatum 50-60cm - Rhododendron ponticum Variegatum . Variety or Cultivar 'Variegatum' _ 'Variegatum' is a vigorous, dense, evergreen shrub bearing elliptic to lance-shaped, glossy, dark green leaves with narrow, creamy-white margins and clusters of broadly funnel-shaped, lilac flowers in spring. De ‘Knaphill’ Azalea’s zijn bladverliezend. Rhododendron × superponticum Cullen (2011) Formula hybridae: Rhododendron catawbiense Michx. It has been widely disturbed as an ornamental plant of gardens and parks (Dehnen-Schmutz et al ., 2004). This List of Rhododendron species includes species of the genus Rhododendron, which is in the plant family Ericaceae.Depending on the source, there are anywhere from 800 to over 1,100 wild species. Since then, this plant has grown uncontrollably and is now a common sight throughout western parts of the British Isles in areas such as … Aim of the study: To evaluate the anti-inflammatory and antinociceptive effects of Rhododendron ponticum leaves using in vivo models, and isolation and chemical characterization of … Rhododendron 'Variegatum' Rhododendron ponticum. Authors Katharina Dehnen-Schmutz 1 , Charles Perrings, Mark Williamson. In Meyler's Side Effects of Drugs (Sixteenth Edition), 2016. Broadleaf evergreen shrub, possibly 4-5 ft high in 10 years. Details R. ponticum is a densely branched evergreen shrub with tough, leathery, dark green, oval leaves. 01957. stems with adventitious roots Flowers . Rhododendron ponticum 黑海杜鵑; Rhododendron smirnowii; Rhododendron ungernii; 漏斗杜鵑亞組 subsection Selensia. Rhododendron ponticum is readily recognised by its distinctive attractive flowers and large dark green coloured, oval leaves. R.ponticum was first introduced to the UK via Gibraltar in 1763 and by 1893 it was being sold on London markets as a flowering pot plant. Published on the internet. An evergreen shrub or small tree, attaining a height of 25 ft in the wild; branchlets soon glabrous. Azalea & Rhododendron Azalea & Rhododendron zijn meest groenblijvende planten die uitbundig bloeien en zijn beschikbaar in vele kleuren. Rhododendron ponticum; seed bank. Symptom Guide: Rhododendron species Phytophthora (fy-toff-thor-uh) Phytophthora species are microscopic organisms that cause disease in Rhododendron plants. Several cytokinin:IAA ratios and a range of zeatin concentrations were evaluated for their effect on shoot multiplication from apical shoots and nodal segments. Woody, evergreen or deciduous shrub in the Ericaceae family. Controlling Rhododendron ponticum in the British Isles: an economic analysis J Environ Manage. Rhododendrons zijn er in dwergvormen en hybride-vormen die hoger worden. × Rhododendron maximum L. × Rhododendron ponticum L. and/or Rhododendron macrophyllum G.Don References [ edit ] Indeed most outbreaks in gardens seem to be traced back to infection on R. ponticum. Whole Plant Traits: Plant Type: Poisonous Shrub What does RHODODENDRON PONTICUM mean? R. ponticum is difficult to eradicate, as its roots can make new shoots. SE Europe, Asia minor. 2004 Apr;70(4):323-32. doi: 10.1016/j.jenvman.2003.12.009. Family: Ericaceae (er-ek-AY-see-ee) Genus: Rhododendron (roh-do-DEN-dron) Species: ponticum (PON-ti-kum) Cultivar: Variegatum » View all varieties of Azaleas and Rhododendrons. Originating in the Mediterranean, they were a popular addition to the parkland surrounding stately homes, providing exotic ornamental value as well as cover for game birds such as pheasants. The woody stems are solid and spread horizontally outwards creating foliage covered, dense growth. Rhododendron control is a key element in nature conservation in many areas. Rhododendron ponticum 'Variegatum' is: Evergreen. In vitro propagation of Rhododendron ponticum L. subsp. It is the state flower of Kashmir. Rhododendron contains potentially toxic chemicals, phenols and diterpenes, which occur in large quantities in its tissues. baeticum and subsp. In Europe, it occurs from southern Poland and Austria south through the Balkans and … Botanical Journal … Rhododendron ponticum has the ability to produce toxic chemicals making it a poisonous plant. Rhododendron (Rhododendron ponticum) Why we grow it: Give them moisture and shade, and rhododendron shrubs offer showy red, white, pink, or purple flower clusters in spring and thick, glossy leaves that thrive into the winter. pontic rhododendron (rhododendron ponticum) in bloom, boekesteyn, graveland, netherlands - rhododendron stock pictures, royalty-free photos & images. This cultivar is less demanding than Kurume azaleas (Rhododendron ponticum) Wildlife Value: Nectar from flowers attracts hummingbirds and bees. Sie ist mit über 1000 Arten eine vergleichsweise große Gattung. Rhododendron ponticum. Click on a CPC link below to view Conservation Plant Characteristics, or click on a name to view its Plant Profile with more information. Low maintenance and easy to grow. Narrow, leathery, green leaves on a dense, spreading habit topped by large trusses of spring flowers in lovely shades of lavender-purple. Leaves are smaller and narrow than R. ponticum and have a thin creamy white edge. 99. Its main and most continuous natural distribution is in the region of the Black Sea, although it is also native in parts of Portugal and southern Spain. Description. Rhododendron ponticum is an evergreen, ornamental plant introduced to the UK by the Victorians in the late 18th Century. 3 As an invasive species, Rhododendron ponticum It is invasive and needs controlling, however it is also beautiful in its own right. These very disjunct populations are probably the result of climate change following the last Ice Age. Rhododendron ponticum, Rubus fruticosus and Veronica chamaedrys were the only species which showed an affiliation with dense R. ponticum plots, and birch (Betula pendula) was the only species which showed an affiliation with cleared plots (Fig. Cold Hardiness Temp: -10°F ( -23°C) Elepidote (E) or Lepidote (L): E. Sub Genus: Hymenanthes. But there are only around fifteen varieties that are popularly grown. October, November, December. - 4 ft. 0 in. The genus Rhododendron is part of the heather family (Ericaceae). Hundreds of thousands of euros are spent each year in the battle to eradicate the highly invasive and destructive Rhododendron ponticum in Killarney National Park. The devastation brought about by Rhododendron ponticum has been touched upon in numerous… The Arboretum’s ironclad rhododendrons are examples. 1958. Accessed: 2020 May 16. Conservation Plant Characteristics 2239 records returned . The genus Rhododendron is the largest in the Ericaceae family with 1200 species. They belong to the plant family known as the Ericaceae, which includes the azaleas, heathers, cranberries, and blueberries. lancifolium compact with narrow leaves, R. ponticum var. It is now thoroughly naturalized in suitable habitats throughout the British Isles, and is a major forest weed.
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