Variety Height Characteristics Shiny Dark Green Leaves with Creamy White Margins

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Variety Height Characteristics Shiny dark green leaves with creamy white margins. Argenteo- Bright red berries in winter. Ilex aquifolium 15-20’ marginatus Requires a male pollinator for berries to set. Use Gold Coast to pollinate. Very dense, compact growth habit. Dark green leaves are edged in bright Ilex aquifolium Gold Coast 4-6’ yellow. Male form with no berries, but will pollinate other hollies. Ilex aquifolium Hedgehog 15-20’ Great for containers or Ilex aquifolium Myrtifolia 6-8’ smaller gardens. Very slow growing. This extremely vigorous growing holly is great for Nellie R. Ilex aquifolium 12-18’ hedging. Female species- Stevens requires male to produce berries. An evergreen shrub with abundant red berries for Ilex cornuta Dazzler 8-10' winter! Spines on the margins of the foliage. Great for Christmas greenery. Valued for its delicate, narrow, twisted leaves and heavy crop of bright red fruit Ilex cornuta Needlepoint 8-10’ that lasts through winter. Performs well as a lush screen, border, accent or foundation plant. The hardies of all hollies. Bright red berries stand out Ilex meserveae Blue Girl 6-7’ against blue-green foliage. Makes a great hedge. Great as a background Ilex meserveae Blue Prince 12-15’ plant or hedge. Good pollinator for female hollies. Variety Height Characteristics Compact, pyramidal form. Dark green leaves with Ilex meserveae Castle Spire 8-10’ bright red berries. Use Castle Wall to pollinate. Great compact, pyramidal form. Great in place of Yew Ilex meserveae Castle Wall 5-8’ hedging. Use to pollinate Castle Spire. Dark green foliage and dark Ilex meserveae Dragon Lady 10-15’ purple stems. Large red berries in winter. New growth has a pinkish- orange variegation. As the Osmanthus Goshiki 3-4’ shrub matures the heterophylla variegation in leaves turns creamy yellow. Foliage is dark purple in Osmanthus young plants. Mature foliage Purpurea 10-15’ heterophylla is a purple-toned deep green. Slow growing with densely Osmanthus set leaves edged in creamy Variegata 8-10’ heterophylla white. Great for shady areas. Beautifully variegated green Osmanthus Aureo- 4-5’ and yellow foliage. Very heterophyllus marginatus slow growing. .

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Ilex Aquifolium
Ilex aquifolium Ilex aquifolium (holly, common holly, English holly, European holly, or occasionally Christmas holly), is a species of holly native to western and southern Europe, northwest Africa, and southwest Asia. It is regarded as the type species of the genus Ilex, which by association is also called "holly". It is an evergreen tree or shrub found, for example, in shady areas of forests of oak and in beech hedges. In the British Isles it is one of very few native evergreen trees. It has a great capacity to adapt to different conditions and is a pioneer species that repopulates the margins of forests or clearcuts. I. aquifolium can exceed 10 m in height, but is often found at much smaller heights, typically 2–3 m (6.6–9.8 ft) tall and broad, with a straight trunk and pyramidal crown, branching from the base. It grows slowly and does not usually fully mature due to cutting or fire. It can live 500 years, but usually does not reach 100. Ilex aquifolium is the species of holly long associated with Christmas, and previously the Roman festival of Saturnalia. Its glossy green prickly leaves and bright red berries (produced only by the female plant) are represented in wreaths, garlands and cards wherever Christmas is celebrated. It is a subject of music and folklore, especially in the British tradition. It is also a popular ornamental shrub or hedge, with numerous cultivars in a range of colours. Description Ilex aquifolium grows to 10–25 m (33–82 ft) tall with a woody stem as wide as 40–80 cm (16– 31 in), rarely 100 cm (39 in) or more, in diameter.
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English Holly Ilex Aquifolium L
English holly Ilex aquifolium L. Synonyms: none Other common names: none Family: Aquifoliaceae Invasiveness Rank: 67 The invasiveness rank is calculated based on a species’ ecological impacts, biological attributes, distribution, and response to control measures. The ranks are scaled from 0 to 100, with 0 representing a plant that poses no threat to native ecosystems and 100 representing a plant that poses a major threat to native ecosystems. Description English holly is a small, evergreen shrub or tree with numerous, short, erect to spreading branches. It commonly grows 2 to 5 m tall, but it can grow up to 17 m tall in its native range. Young twigs are green and develop grey bark with age. Leaves are alternate, petiolated, ovate to oblong, entire or lobed, leathery, and 2.5 to 6 cm long with glossy, dark green upper surfaces and spine-like teeth. Male and female flowers are usually found on separate plants. Flowers are 6 mm in diameter, white, and borne in few-flowered, axillary clusters. Fruits are 7 to 12 mm in diameter, red, smooth, and clustered with 2 to 8 single-seeded nutlets each. Nutlets are convex and ridged (DiTomaso and Healy Fruit and foliage of Ilex aquifolium L. Photo by F. Vincentz. 2007, eFloras 2008, Klinkenberg 2010). Ecological Impact Impact on community composition, structure, and interactions: English holly invades undisturbed forests in the Pacific Northwest (Polster 2004, King County 2010, Klinkenberg 2010), and it has escaped cultivation and become invasive in moist, coastal forests in California (DiTomaso and Healy 2007). This species is considered one of the ten most invasive garden plants for sale in Tasmania.
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Rutgers Gardens Holly Collection Accession List
Area Plant Species names, hybrid formulas, and cultivar names Common name Accession # Area #1 (American Holly Collection) 1 1 Ilex opaca 'Judge Brown' × Ilex opaca 'David' Hybrid American Holly 0200-R Ilex opaca 'Old Heavy Berry' × Ilex opaca 'Silica King' 1 2 *REMOVED Hybrid American Holly 0201-R 1 3 Ilex opaca 'Boyce Thompson Xanthocarpa' Yellow-fruited American Holly 0092-1945*A 1 4 Ilex opaca 'Jersey Delight' American Holly 0202-R Ilex opaca 'Old Heavy Berry' × Ilex opaca 1 5 'Point Pleasant #4' Hybrid American Holly 0203-R 1 6 Ilex R-5, T-47 × Ilex opaca 'Point Pleasant #5' Hybrid Holly 0204-R 1 7 Ilex 'Nellie R. Stevens' Hybrid Holly 0175-1960 1 8 Ilex opaca 'Hedgeholly' American Holly 0121-1949*A 1 9 Ilex opaca 'Portia Orton' Hybrid American Holly 0205-R 1 10 Ilex opaca Cardinal™ × Ilex opaca R-38, T-18 Hybrid American Holly 0206-R 1 11 Ilex opaca 'Clark's Valley #2' American Holly 0075-1950 1 12 Ilex opaca 'Mae' American Holly 0007-1954 1 13 Ilex opaca 'Farage' *REMOVED American Holly 0028-1946*G 1 14 Ilex opaca 'Manig' *REMOVED American Holly 0032-1946*I 1 15 Ilex aquifolium 'Ex. Herb Kale' English Holly 0207-R 1 16 Ilex opaca 'Jersey Knight' American Holly 0050-1965*A 1 17 Ilex opaca 'Griscom' American Holly 0033-1947*F 1 18 Ilex opaca 'Andorra' American Holly 0021-1950 1 19 Ilex opaca 'Reeve West' American Holly 0045-1947 1 20 Ilex opaca 'Clark' American Holly 0026-1946 1 21 Ilex opaca 'Judge Brown' × Ilex R-36, T-15 Hybrid Holly 0208-R 1 22 Ilex opaca 'Allen' American Holly 0031-1947 1 23 Ilex opaca 'Wheeler #4' American Holly
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Residential Architectural Review Committee Recommended Plant List Plant Materials The following plant materials are intended to guide tree and shrub ADDITIONS to residential landscapes at Issaquah Highlands. Lot sizes, shade, wind and other factors place size and growth constraints on plants, especially trees, which are suitable for addition to existing landscapes. Other plant materials may be considered that have these characteristics and similar maintenance requirements. Additional species and varieties may be selected if authorized by the Issaquah Highlands Architectural Review Committee. This list is not exhaustive but does cover most of the “good doers” for Issaquah Highlands. Our microclimate is colder and harsher than those closer to Puget Sound. Plants not listed should be used with caution if their performance has not been observed at Issaquah Highlands. * Drought-tolerant plant ** Requires well-drained soil DECIDUOUS TREES: Small • Acer circinatum – Vine Maple • Acer griseum – Paperbark Maple • *Acer ginnala – Amur Maple • Oxydendrum arboreum – Sourwood • Acer palmation – Japanese Maple • *Prunus cerasifera var. – Purple Leaf Plum varieties • Amelanchier var. – Serviceberry varieties • Styrax japonicus – Japanese Snowbell • Cornus species, esp. kousa Medium • Acer rufinerve – Redvein Maple • Cornus florida (flowering dogwood) • *Acer pseudoplatanus – Sycamore Maple • Acer palmatum (Japanese maple, many) • • *Carpinus betulus – European Hornbeam Stewartia species (several) • *Parrotia persica – Persian Parrotia Columnar Narrow
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Selecting Hedgerow Species
Selecting Hedgerow Species This fact sheet suggests a wide range of hedging species for both rural and urban areas. Some species are particularly attractive providing shelter, screening, flowers and a haven for wildlife. Species for rural areas . hawthorn (=whitethorn, quickthorn): o most useful hedging plant o tolerates a wide range of soils o tough, fast growing, very stock-proof o excellent for laying and coppicing o avoid planting in shady or exposed places or on top of ditches o plant 2-6 hawthorn/metre (in single or double staggered row) . blackthorn (=sloe): o grows better on heavy soils o slower growing than hawthorn o useful for gapping up (suckers) o early flowering o tolerates exposure . holly: o tolerates most soils except heavy wet clay (difficult to establish unless root-balled) o slow starter but very attractive o if berries are required: plant 10 female and 1 male plant (if planting only one, choose “JC Van Tol” or “Pyramidalis”) o plant in May o will grow in shade and on old hawthorn sites o plant: 2-4 holly/metre . beech (and copper beech): o grows well on drier, exposed, mineral soils o will hold on to its golden leaves over the winter if trimmed regularly o unable to coppice o plant 2-5 plants/m (in a single or double staggered row) o alternative in heavy ground: hornbeam consider also: . hazel: suitable for drier more fertile soils, very good for wildlife, prevents soil erosion, traditionally coppiced . guelder rose: deciduous, lovely flowers, berries and autumn colours, plant 2/m . gorse: grows well in coastal and exposed areas, striking spring flowers, very stock-proof if trimmed regularly .
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Ilex Aquifolium (English Holly) Size/Shape
Ilex aquifolium (English Holly) English holly is a native tree or large shrub to Europe.The plant has female and male form. Leaves are leathery with large shiny edge. The small flowers on the female plants are fragrant but generally inconspicuous.If pollination happens red berries will appear by end of fall and stay on the plants over winter. Birds are attracted to the fruit. Plants are also susceptible to leaf drop, in high pH soils. Landscape Information French Name: Houx commun ﺍﻷﻭﺭﺍﻕ ﺑﻬﺸﻴﺔ ﻣﺎﺋﻴﺔ :Arabic Name Pronounciation: EYE-lex ak-wuh-FO-lee-um Plant Type: Tree Origin: Southeast US Heat Zones: 7, 8, 9, 10 Hardiness Zones: 5, 6, 7, 8, 9 Uses: Screen, Specimen Size/Shape Growth Rate: Slow Tree Shape: Pyramidal, Round Canopy Symmetry: Symmetrical Canopy Density: Dense Canopy Texture: Fine Height at Maturity: 5 to 8 m Spread at Maturity: 5 to 8 meters Time to Ultimate Height: 20 to 50 Years Plant Image Ilex aquifolium (English Holly) Botanical Description Foliage Leaf Arrangement: Alternate Leaf Venation: Pinnate Leaf Persistance: Evergreen Leaf Type: Simple Leaf Blade: 5 - 10 cm Leaf Shape: Ovate Leaf Margins: Entire, Terminal Spine Leaf Textures: Coarse Leaf Scent: No Fragance Color(growing season): Green Color(changing season): Green Flower Flower Image Flower Showiness: False Flower Size Range: 0 - 1.5 Flower Sexuality: Diecious (Monosexual) Flower Scent: Pleasant Flower Color: Green, White Seasons: Spring Trunk Trunk Has Crownshaft: False Trunk Susceptibility to Breakage: Generally resists breakage Number of Trunks: Can be trained
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English Holly (Ilex Aquifolium) in a Semi- Natural Pacific Northwest Forest Author(S): David L
Pictures of an Invasion: English Holly (Ilex aquifolium) in a Semi- Natural Pacific Northwest Forest Author(s): David L. Stokes, Elliott D. Church, David M. Cronkright and Santiago Lopez Source: Northwest Science, 88(2):75-93. 2014. Published By: Northwest Scientific Association DOI: http://dx.doi.org/10.3955/046.088.0204 URL: http://www.bioone.org/doi/full/10.3955/046.088.0204 BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. David L. Stokes1, Elliott D. Church, David M. Cronkright, and Santiago Lopez, University of Washington, Bothell, 18115 Campus Way NE, Box 358530, Bothell, Washington 98011-8246 Pictures of an Invasion: English Holly (Ilex aquifolium) in a Semi-natural Paciﬁc Northwest Forest Abstract English holly (Ilex aquifolium) is an increasingly common invader of west-side Paciﬁc Northwest forests, but little site- scale information exists about the pattern and processes of this invasion.
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English Holly (Ilex Aquifolium)
KING COUNTY NOXIOUS WEED ALERT Weed of Concern: English Holly Control Recommended Ilex aquifolium Holly Family Identification Tips • Large, dense, slow-growing evergreen tree or shrub • Can reach 15 to 50 feet tall and up to 15 feet wide • Can grow as either a single tree or a multi-stemmed thicket • Leaves are thick, glossy, dark green and wavy, 1-3 inches long • Leaves usually have sharp spines along the edges, although may be smooth on older branches • Flowers are small, whitish, sweetly scented • Produces red, yellow, or orange berries in the winter Biology It makes a festive holiday decoration, English holly has both male and female plants that are insect-pollinated. but English holly is not welcome in It reproduces mainly by seeds that are contained within the berries; birds natural areas where it crowds out eat the berries and disperse the seeds to new areas. It can also spread native plants. vegetatively through suckering and layering. Branches can form roots when damaged or lying on the ground. Impacts Berries are poisonous to humans and pets. Holly invades forest habitats where dense thickets suppress germination and growth of native trees and shrubs. Leaves produce flammable vapor when heated, causing them to ignite easily. May increase fire risk. Distribution Found throughout King County, from urban landscapes to undisturbed natural areas and native forests. Holly grows in shade or sun in well- drained soil. It’s also grown commercially for decorations and floral arrangements. Introduced from Europe. What You Can Do While there is no legal requirement for removing English holly in King County, the Noxious Weed Control Board recognizes this plant as a weed English holly can grow up to 50 feet of concern and recommends prevention of its spread into natural areas tall and is extremely difficult to remove and forests.
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Review and Propagation of the Holly Slope Laura Sweeney University of Pennsylvania
University of Pennsylvania Masthead Logo ScholarlyCommons Internship Program Reports Education and Visitor Experience 2014 Review and Propagation of the Holly Slope Laura Sweeney University of Pennsylvania Follow this and additional works at: https://repository.upenn.edu/morrisarboretum_internreports Part of the Botany Commons, and the Horticulture Commons Recommended Citation Sweeney, Laura, "Review and Propagation of the Holly Slope" (2014). Internship Program Reports. 32. https://repository.upenn.edu/morrisarboretum_internreports/32 An independent study project report by The aM rtha J. Wallace Endowed Plant Propagation Intern (2013-2014) This paper is posted at ScholarlyCommons. https://repository.upenn.edu/morrisarboretum_internreports/32 For more information, please contact [email protected]. Review and Propagation of the Holly Slope Abstract The purpose of this project was to complete several goals that contribute to a long-term ongoing renovation of the Holly Slope section at the Morris Arboretum. The first of these goals was to perform an assessment to determine if any of the hollies on the slope are rare or unique. This goal was completed by contacting nine other major holly collections to provide lists of their plants. Following the assessment, the next goal was to propagate those hollies with the eventual intention of offering specimens to other gardens and arboreta. The results of this work will contribute directly to future goals for the slope, including determining which holly plants can be removed to reduce crowding in order to revitalize the collection and opening up some areas to interplant the hollies with live oaks (Quercus virginiana). In addition to the previously mentioned efforts, this paper will explore a brief history of hollies and provide some general information on the taxonomy and botanical description of the holly genus, Ilex.
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HOLLY-Genus-Overview.Pdf
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Ilex Aquifolium
Ilex aquifolium Ilex aquifolium in Europe: distribution, habitat, usage and threats N. Guerrero Hue, G. Caudullo, D. de Rigo The European holly (Ilex aquifolium L.) is an evergreen small tree or shrub, with characteristic coriaceous dark green leaves with spines and red berry fruits. Holly grows in Western Europe, Western Balkans and North Turkey up to the Caucasus, preferring Atlantic climates. It adapts to different soil conditions, occurring mainly as understorey vegetation in oak and beech temperate forests. It is widely planted as an ornamental plant and hedge shrub, and is also well known for Christmas decorations. Various fungi of genus Phytophthora cause roots to rot in cultivated hollies. However there are no critical threats for the conservation of this species. The European holly (Ilex aquifolium L.) is a small evergreen tree or shrub 8-10 m in height, which rarely exceeds 20 m1, 2. It Frequency has a dense pyramidal crown and a straight woody stem with < 25% grey bark. The leaves are up to 10 cm long, simple, alternate, 25% - 50% 50% - 75% coriaceous and glabrous. Their upper surface is dark-green and > 75% glossy and the lower surface is yellowish and matt. With an ovate, Chorology Native elliptic or oblong shape, the leaf margin may be undulate with spines, especially in the lower part of the tree. Flowers are small (6 mm in diameter), white and placed in axillary cymes. Holly is normally dioecious and flowers between May and August2, 3. The fruit is a bright red drupe of 7-12 mm size2. Its seeds ripen in late autumn and usually last throughout the winter, when birds, rodents and larger herbivores eat them2-5.
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Plant Morphology Booklet
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