Resources by Alex Niemiera
Title | Available As | Summary | Date | ID | Author |
---|---|---|---|---|---|
American Beautyberry (Callicarpa americana) | The primary and sole attribute of beautyberry, a large loosely branched shrub, is the showy display of magenta fruits in the fall. |
Mar 7, 2024 | 2901-1033NP | ||
American Yellowwood (Cladrastis kentukea (prior name C. lutea)) | This vase-shaped medium tree has smooth bark and showy white flowers in the spring. It is also quite drought and alkaline soil tolerant. |
Mar 7, 2024 | 2901-1034NP | ||
Evergreen Azalea (Rhododendron species) | There are hundreds of evergreen azalea cultivars which vary in hardiness, size, form, flower color, time of flowering, and foliage. The primary attractive feature of azaleas is the very attractive and showy flower display in spring. |
Mar 7, 2024 | 2901-1035NP | ||
Beautybush (Kolkwitzia amabilis) | There are hundreds of evergreen azalea cultivars which vary in hardiness, size, form, flower color, time of flowering, and foliage. The primary attractive feature of azaleas is the very attractive and showy flower display in spring. |
Mar 7, 2024 | 2901-1036NP | ||
Cherrylaurel (Prunus laurocerasus `Otto Luyken') | The species (Prunus laurocerasus) is generally not sold in the U.S. Cultivars of cherrylaurel are low-growing with handsome glossy foliage and white flowers in spring. This species tolerates shade and is used as a border, hedge, and in mass. |
Mar 7, 2024 | 2901-1038NP | ||
Cotoneaster | Leaves are small and glossy green. Showy small, white/pink, spring flowers are followed by red or black fruit which cover branches in the fall. The fruit display can be quite showy. |
Mar 7, 2024 | 2901-1039NP | ||
Crapemyrtle (Lagerstroemia indica) | Glossy, dark green foliage turns yellow, orange, and red in fall. Flowers may be white, pink, red, or purple. Exfoliating bark is ornamental. |
Mar 7, 2024 | 2901-1040NP | ||
Doublefile Viburnum (Viburnum plicatum var. tomentosum) | Doublefile viburnum is a large wide spreading shrub with a horizontal branching habit and a spectacular flower display in spring. |
Mar 7, 2024 | 2901-1041NP | ||
Drooping Leucothoe (Leucothoe fontanesiana) | Drooping leucothoe is a beautiful and graceful evergreen medium-sized shrub with lustrous, dark green foliage. White bell-shaped flowers bloom in the spring. Its arching branches give it a fountain-like effect. This plant is not suitable for sunny or dry locations. |
Mar 7, 2024 | 2901-1042NP | ||
European White Birch (Betula pendula) | European white birch is a small/medium fast-growing tree with showy white bark and pendulous branch tips (especially when bearing seed). Small, glossy-green summer foliage turns yellow in fall exposing ornamental white bark. This species is considered to be short lived due its susceptibility to pests. |
Mar 7, 2024 | 2901-1043NP | ||
Flowering Quince | Flowering quince is a large fast-growing shrub whose main merit is showy flowers (red, orange, white, pink depending on cultivar) in early spring. Uses of this species include hedge, shrub border, or mass plantings. Plants have thorns and therefore need careful placement. |
Mar 7, 2024 | 2901-1044NP | ||
Fraser Photinia, Red Tip | Red tip is a large evergreen shrub. Newly emerging foliage is red and quite showy for a few weeks after which it changes to glossy, dark green. Clusters of white flowers occur in late spring. |
Mar 7, 2024 | 2901-1045NP | ||
Ginkgo, Maidenhair Tree | Ginkgo is a large shade tree that is tolerant of adverse growing conditions and has a bright yellow fall foliage color. One should only plant male trees since female trees bear fruit that smell like vomit. |
Mar 7, 2024 | 2901-1046NP | ||
Goldenraintree | Goldenraintree is a medium tree with showy yellow flowers in early summer. Flowers are followed by bladder-like fruits that start out light green, turn yellow, and then brown. Fall color can be fair to good depending on the individual tree. This species is quite tolerant of adverse conditions. |
Mar 7, 2024 | 2901-1047NP | ||
Green Ash | This large fast-growing tree is very tolerant of adverse conditions. Its fall foliage color is a yellow. |
Mar 7, 2024 | 2901-1048NP | ||
Japanese Maple | Japanese maple is a small tree (usually less than 25 feet tall) with a fine texture and year round appeal. The combination of its showy spring, summer and fall foliage, smooth bark, and interesting form make is suitable for specimen tree status. |
Mar 7, 2024 | 2901-1049NP | ||
Japanese Barberry | This medium to large shrub has purple foliage throughout the growing season. Japanese barberry has thorns which may be an advantage (deer proof, pedestrian traffic control) or a liability (injury to pedestrians). |
Mar 7, 2024 | 2901-1050NP | ||
Japanese Camillia (Camellia japonica) | Beeches, both the American and European species, are large stately and noble trees. They have a smooth sensuous dark gray bark that is exceptionally attractive. Unfortunately, this feature often beckons graffiti practitioners to denigrate trees by carving their initials on trunks. |
Mar 6, 2024 | 2901-1051NP | ||
Japanese Holly (Ilex crenata) | There are numerous cultivars of Japanese holly. Many are compact, mounded forms with small, spineless, dark-green leaves and black fruit. They are primarily used in mass for borders, backgrounds, and foundation plants. |
Mar 6, 2024 | 2901-1052NP | ||
Japanese Pagodatree, Sophora | Japanese pagodatree is a medium/large shade tree with showy flowers in summer. Green seed pods, somewhat ornamental, hang on tree until late in the fall. Flower petals can be messy if tree is used near a house, road, or pathway. |
Mar 6, 2024 | 2901-1053NP | ||
Leatherleaf Viburnum (Viburnum rhytidophyllum) | This large shrub has dark green leaves that are large, slender, and wrinkled. This species has showy white flowers in late spring. Clusters of red to black berries form (inconsistently) in late summer. |
Mar 6, 2024 | 2901-1054NP | ||
Littleleaf Linden (Tilia cordata) | This medium tree has wonderfully fragrant flowers in June and is tolerant of adverse conditions. |
Mar 6, 2024 | 2901-1055NP | ||
Live Oak (Quercus virginiana) | A massive and majestic shade tree with evergreen foliage that is bright olive-green when new and changes to a glossy, dark green when mature. |
Mar 6, 2024 | 2901-1056NP | ||
London Planetree (Platanus x acerifolia) | London planetree is a medium/large species that is very tolerant of adverse conditions. It has ornamental which bark flakes off, exposing tan, greenish and creamy white colors. |
Mar 6, 2024 | 2901-1057NP | ||
Nandina, Heavenly Bamboo (Nandina domestica) | Heavenly bamboo is a medium-large upright shrub. In late spring it bears showy white flowers and in the late fall/winter it has attractive reddish foliage (sun) and large clusters of red berries. This species can tolerate full sun or full shade and is drought tolerant. There are several dwarf cultivars that are suitable for small spaces. |
Mar 6, 2024 | 2901-1058NP | ||
Norway Maple (Acer platanoides) | The Virginia Department of Conservation and Resources and the Virginia Native Plant Society have ranked Norway maple as a “moderately invasive species” in the mountain, piedmont, and coastal areas of Virginia. |
Mar 6, 2024 | 2901-1059 | ||
Old Fashioned Weigela (Weigela florida) | Old fashioned weigela is a large shrub with a coarse texture and showy spring flowers. This plant is best suited for a shrub border. There are several new cultivars which are improved versions (dwarf, foliage and flower characteristics) compared to the species. |
Mar 6, 2024 | 2901-1060 | ||
Oregon Grape Holly (Mahonia) (Mahonia aquifolium) | Oregon grape holly is a slow-growing, medium to large evergreen shrub with lustrous foliage and bright yellow flowers in spring which are followed by robin egg blue fruit in summer. |
Mar 5, 2024 | 2901-1061 | ||
Pin Oak (Quercus palustris) | In about the first thirty years, the branching habit of the native pin oak is truly unique. The upper branches are ascending, the middle ones horizontal, and the lower ones drooping. |
Mar 5, 2024 | 2901-1062 | ||
Privet (Ligustrum species) | Small, green, summer foliage. When unpruned, pyramidal clusters of small white flowers produce black berries. |
Mar 7, 2024 | 2901-1063 | ||
Red Maple (Acer rubrum) | Red maple is a fast-growing medium/large shade tree species with a spectacular fall foliage color. It has showy red flowers in the spring. There are many cultivars of this species that vary in form, tolerance of wet conditions, and fall color. |
Mar 7, 2024 | 2901-1064 | ||
Evergreen Rhododendron (Rhododendron species) | Oct 17, 2018 | 2901-1065 | |||
Rose-of-Sharon, Shrub Althea (Hibiscus syriacus) | Rose-of- Sharon is a large shrub with showy, relatively large single or double flowers, that bloom in summer. Flower colors include white, red, purple, violet, and blue. |
Mar 7, 2024 | 2901-1066 | ||
Scarlet Firethorn, Pyracantha (Pyracantha coccinea) | Pyracantha is a large, fast-growing shrub has showy white blooms in spring and a spectacular display of orange/red fruit in the fall. This plant requires pruning since unpruned plants are very rangy looking. |
Mar 7, 2024 | 2901-1067 | ||
Smokebush, Smoketree (Cotinus coggygria) | Smokebush is a small tree or large shrub depending on how one prunes the plant. Leaves of the species are green. Depending on cultivar; leaves can be purple or yellow during the growing season. |
Mar 7, 2024 | 2901-1068 | ||
Southern Magnolia (Magnolia grandiflora) | This is a magnificent large evergreen tree with very large, wonderfully fragrant white flowers in late spring and early summer. There are many cultivars with variations in tree shape and size, flower, and foliage characteristics. |
Mar 7, 2024 | 2901-1069 | ||
Southern Waxmyrtle (Myrica cerifera) | Southern waxmyrtle is a large evergreen shrub or small tree depending on how one prunes it. This species tolerates wet and dry soils and females have a somewhat showy display of gray berries in the fall/winter. |
Mar 7, 2024 | 2901-1070 | ||
Sugar Maple (Acer saccharum) | Sugar maple is a medium/large shade tree with a no less than spectacular fall foliage display. There are many cultivars; cultivar characteristics include growth rate, form, and fall foliage color. |
Mar 7, 2024 | 2901-1071 | ||
Sweetgum (Liquidambar styraciflua) | Pyramidal in youth, round to oval at maturity Sweetgum is a medium/large tree with very showy fall foliage colors. It tolerates moist to dry soils. A notable disadvantage is the mess created by the fallen spiny fruit (gum balls). |
Mar 7, 2024 | 2901-1072 | ||
Thornless Common Honeylocust (Gleditsia triacanthos var. inermis) | Thornless honeylocust is a large tree that tolerates both wet and dry soils. One should select a cultivar for fruitlessness and pest resistance. |
Mar 7, 2024 | 2901-1073 | ||
Tuliptree (Liriodendron tulipifera) | Tuliptree is a very tall, large tree with a straight trunk. It bears beautiful tulip-shaped flowers in May but generally go unnoticed since they high in the tree. |
Mar 7, 2024 | 2901-1074 | ||
Vanhoutte Spirea (Spiraea x vanhouttei) | Vase-shaped with arching branches Vanhoutte spirea is a large shrub with graceful arching branches. Its main claim to fame is it abundant and showy display of white flowers in spring. This species is best used in a shrub border or in mass. |
Mar 7, 2024 | 2901-1075 | ||
White Oak (Quercus alba) | White oak is a magnificent large spreading tree. This species is somewhat slow growing but is well worth the wait. Do not plant this tree in an area that is apt to be subjected to soil compaction. |
Mar 7, 2024 | 2901-1076 | ||
Winterberry (Ilex verticillata) | Winterberry is a large shrub and somewhat informal in character. There are cultivars that are shorter and have a more formal appearance. This native wetland species has very showy bright red fruit (on female plants) in early autumn that persist till February. |
Mar 7, 2024 | 2901-1077 | ||
Wintercreeper Euonymus (Eunymus fortunei) | Wintercreeper euonymus is a low-growing evergreen ground cover that will climb when it encounters a vertical surface. There are several cultivars which vary in foliage color and height. |
Mar 7, 2024 | 2901-1078 | ||
Yaupon Holly Cultivars (Ilex vomitoria) | This and several other similar cultivars are used in landscapes as border plants or in mass. This species is very tolerant of most adverse landscape conditions. Some female cultivars have stems laden with very showy persistent red fruit. This species is suited to warmer areas of Virginia (zone 7 and higher). |
Mar 7, 2024 | 2901-1079 | ||
Austrian Pine, Pinus nigra | Austrian pine is a medium to large pine tree that is quite dense in its youth (about first 20 years). As most other pines, with age this species loses its lower branches and assumes a flat-topped irregular form. |
Mar 7, 2024 | 3010-1462 | ||
Bigleaf Hydrangea, Hydrangea macrophylla | Bigleaf hydrangea is a very popular flowering shrub. Flowers are mostly produced in June and July but newer cultivars (that flower on new growth) flower through the summer. Depending on the particular cultivar, bigleaf hydrangeas bear one of two types of flowers. |
Mar 7, 2024 | 3010-1463 | ||
Bradford Callery Pear (and other cultivars) Pyrus calleryana ‘Bradford’ | Bradford callery pear is a medium size fast-growing tree that has an exceptionally showy flower show (March/April), has handsome glossy leaves that turn a brilliant red-orange in fall, has a symmetrical oval to round shape with a neat branching pattern, is resistant to fire blight, and is remarkably tolerant of drought, heat, pollution, and poor soils. |
Mar 7, 2024 | 3010-1464 | ||
Canadian Hemlock, Tsuga canadensis | Canadian hemlock is a large very beautiful and graceful conifer native to moist forests and stream banks of the Appalachian Mountains. Unlike most other conifers, it is shade tolerant but will tolerate full sun. |
Mar 7, 2024 | 3010-1465 | ||
Carolina Silverbell, Halesia carolina (formerly H. tetraptera) | Carolina sIlverbell is a medium sized tree with a very showy display of bell- shaped white flowers in April. Brown four-winged fruits are persistent into the fall that are considered aesthetically pleasing by some; at the least they are interesting and an aid in plant identification. |
Mar 7, 2024 | 3010-1466 | ||
Cedars, Cedrus spp. | True cedars, the genus Cedrus, are large exceptionally beautiful conifers. In youth they are conical trees but mature into grand picturesque specimens. There are three cedar (Cedrus) species in the landscape trade. |
Mar 7, 2024 | 3010-1467 | ||
Chastetree, Monk’s Pepper Tree, Vitex agnus-castus | Chastetree is a large fast-growing shrub or small tree that produces showy pale violet flowers in June/July through September. This species is quite drought tolerant. |
Mar 7, 2024 | 3010-1468 | ||
Chinese Juniper, Juniperus chinensis | Chinese juniper, the species, is a medium/large tree, however, only cultivars, ranging from small trees/large shrubs to low-growing shrubs are sold at garden centers. |
Mar 7, 2024 | 3010-1469 | ||
Colorado Spruce, Picea pungens var. glauca | Colorado spruce is usually a dense conical conifer. Within the species there is a botanical variety called the Glauca Group (var. glauca). The foliage of seedlings from plants in the Glauca Group can vary from green to bright powder blue. |
Mar 7, 2024 | 3010-1470 | ||
Common Periwinkle, Lesser Periwinkle, Vinca minor | Common Periwinkle is an attractive low-growing broad leaved evergreen ground
cover. The plant produces 1-inch blue-violet flowers in early spring that are noticeable upon close inspection. Plants do best in light shade but will tolerate full sun and full shade; full sun plantings often show leaf discoloration. |
Mar 7, 2024 | 3010-1471 | ||
Cornelian Cherry Dogwood, Cornus mas | Cornelian cherry dogwood is a multi-stem large shrub or small tree depending on how one prunes it. In either case, its main showy characteristic is in February/March at which time it produces numerous small yellow flowers which collectively are quite showy. |
Mar 7, 2024 | 3010-1472 | ||
Creeping Juniper, Juniperus horizontalis | Creeping juniper, a conifer, is a ground cover species represented by numerous cultivars (more than 60) that vary in height, form, foliage color, and the presence of juniper “berries” (on females). |
Mar 7, 2024 | 3010-1473 | ||
Dawn Redwood, Metasequoia glyptostroboides | Dawn redwood is a fast-growing large deciduous conifer with a distinctly conical form. This species is quite majestic; its feather-like foliage confers a fine texture. Fall foliage color is variable but a pleasant brown-orange color is typical. |
Mar 7, 2024 | 3010-1474 | ||
Dwarf Alberta Spruce, Picea glauca ‘Conica’ | Dwarf Alberta Spruce is quite common in the garden center trade. It is a slow- growing densely compact conical conifer with a formal look due to its dense symmetrical form. |
Mar 7, 2024 | 3010-1475 | ||
Eastern Arborvitae, American Arborvitae, White Cedar, Thuja occidentalis | Eastern arborvitae is a conical conifer that has a stately appearance and useful as a specimen plant (used alone as a focal point), as a border planting, or anywhere a conical evergreen is appropriate. |
Mar 7, 2024 | 3010-1476 | ||
Eastern Redcedar, Juniperus virginiana | Eastern redcedar is widely distributed throughout the eastern US. It is a pioneer species in that is quickly populates farm fields and other open areas (seeds spread in bird droppings). Its common place presence throughout makes it suffer the stigma of being too familiar. |
Mar 7, 2024 | 3010-1477 | ||
English Ivy, Hedera helix | English ivy is an attractive evergreen ground cover and vine that grows in full sun or full shade. While very attractive due to its lustrous green foliage and numerous foliage variations found in the cultivars, and being very tolerant of adverse conditions, this species has been documented as an invasive species. |
Mar 7, 2024 | 3010-1478NP | ||
European Cranberrybush Viburnum (Guelder Rose), Viburnum opulus | Nov 6, 2023 | 3010-1479NP | |||
European Hornbeam, Carpinus betulus | Nov 6, 2023 | 3010-1480NP | |||
European Larch, Larix decidua | Nov 6, 2023 | 3010-1481NP | |||
Evergreen Hollies, (Ilex spp.) | Nov 6, 2023 | 3010-1482NP | |||
Flowering Crabapple | Nov 6, 2023 | 3010-1483NP | |||
Flowering Dogwood, Cornus florida | Nov 6, 2023 | 3010-1484NP | |||
Franklinia | Nov 6, 2023 | 3010-1485NP | |||
Garden Sumacs, Rhus spp. | Nov 6, 2023 | 3010-1486NP | |||
Giant Arborviatae, Western Arborvitae | Nov 6, 2023 | 3010-1487NP | |||
Glossy Abelia | May 1, 2023 | 3010-1488NP | |||
Heaths (several species of Erica) and Heathers (Calluna vulgaris) | Nov 6, 2023 | 3010-1489NP | |||
Japanese Garden Juniper | Nov 6, 2023 | 3010-1490NP | |||
Japanese Pachysandra, Japanese Spurge | Nov 6, 2023 | 3010-1491NP | |||
Japanese Pieris | Nov 6, 2023 | 3010-1492NP | |||
Lilacs | Nov 6, 2023 | 3010-1493NP | |||
Mountain-Laurel | Nov 6, 2023 | 3010-1494NP | |||
Mugo Pine, Pinus mugo | Main Features: Generally only dwarf forms of mugo pine are sold at garden centers; the species (non-dwarf) is a multi-stem medium to large tree. Dwarf forms vary in their growth rate from 1 to 8 inches per year, and in their form (mounded to upright oval). Hence, cultivar selection is important to match the cultivar to the available garden/landscape space. |
Feb 1, 2024 | 3010-1495NP | ||
Oriental Arborvitae, Thuja orientalis (also known as Platycladus orientalis) | Foliage: Flat scale-like foliage without a sweet fragrance when crushed; branches are held in a flat vertical plane; evergreen Height: About 20 feet Spread: About 15 feet |
Feb 1, 2024 | 3010-1496NP | ||
Red Twig Dogwoods, Tatarian Dogwood (Cornus alba) and Redosier Dogwood (Cornus sericea) | There are two species of dogwoods that have showy red stems in the winter, Tatarian dogwood (Cornus alba) and redosier dogwood (C. sericea). Both are deciduous medium to large shrubs and have similar flowering and fruit characteristics, as well as cultural aspects. Thus, the general information (Summary, Plant Needs, Functions, and Care) will be presented for both species). Each species has several cultivars that vary in stem color and foliage variegation; cultivar information will be presented for each species in the Additional Information section. |
Feb 1, 2024 | 3010-1497NP | ||
Shore Juniper | Nov 6, 2023 | 3010-1498NP | |||
White Fringetree, Old-man’s-beard | Nov 6, 2023 | 3010-1499NP | |||
Yews, Taxus spp. | Nov 6, 2023 | 3010-1500NP | |||
Yuccas, Yucca spp. | Nov 6, 2023 | 3010-1501NP | |||
Container and Raised-Bed Gardening | Nov 5, 2018 | 426-020 | |||
Jardinería en macetas y camas elevadas (Container and Raised Bed Gardening) | La jardinería en macetas le permite tener y disfrutar de muchas plantas ornamentales y cuando no puede cultivarlas directamente en la tierra. Puede utilizar plantas cultivadas en macetas en entradas, patios, terrazas, azoteas, jardines, interiores o en cualquier lugar donde necesite añadir un componente vivo para mejorar el atractivo de una zona. Cada maceta plantada tendrá su propia personalidad; puede crear un paisaje en cada maceta. Pueden ser impresionantes o sutiles, grandes o pequeñas. Las plantas y las macetas ofrecen combinaciones ilimitadas de tamaño, color, forma y textura que pueden dar a su entorno interior y exterior un aspecto más agradable desde el punto de vista estético. |
Nov 6, 2023 | 426-020s (SPES-428P) | ||
Invasive Plants -- A Horticultural Perspective | Apr 28, 2009 | 426-080 | |||
The Effect of Landscape Plants on Perceived Home Value | The value of an attractive landscape to a home’s perceived value has often been stated at 15 percent. Is this figure reliable, and what landscape features do contribute to the value of a home? How does a landscape contractor convince his/her client to spend a significant portion of a home’s construction budget on landscaping, and is this a wise investment? How can a homeowner feel justified by spending thousands of dollars to landscape a newly constructed house? Or, will thousands of dollars worth of landscaping, significantly increase the “curb appeal” of a home for sale? To answer these questions, researchers conducted a seven-state survey of attendees at consumer home and garden shows to determine consumer perspective on how plant size, type, and design sophistication in a landscape affect the perceived value of a home (Behe et al., 2005). |
Nov 6, 2023 | 426-087 | ||
Indoor Plant Culture | Select only those plants that appear to be free of pests. Check the undersides of the foliage and the junction of leaf and stem for signs of insects or disease. Select plants that look sturdy, clean, and well-potted. Choose plants with healthy foliage. Avoid plants with yellow or chlorotic leaves, brown leaf margins, wilted foliage, spots or blotches, or spindly growth. In addition, avoid those with torn leaves. Plants that have new flower and leaf buds along with young growth are usually of superior quality. |
Nov 6, 2023 | 426-100 | ||
Planning the Vegetable Garden | How much time will you be able to devote to
your garden on a regular basis? The answer to this
question will dictate the size of your garden. You
must remember that, once planted, the garden will
have to be weeded once a week, irrigated during
droughts, and vegetables harvested when ripe.
Depending on the type of vegetables, you may also
need to undertake pest control measures. |
Nov 4, 2020 | 426-312 (HORT-209P) | ||
Intensive Gardening Methods | Nov 6, 2023 | 426-335 | |||
Métodos de huerta intensiva (Intensive Gardening Methods) | El objetivo de la jardinería intensiva es cosechar la mayor cantidad posible de productos en un espacio limitado. Las huertas más tradicionales constan de largas hileras de hortalizas muy separadas entre sí. Gran parte de la superficie de la huerta está ocupada por el espacio entre las hileras. Una huerta intensiva minimiza el espacio desperdiciado. La práctica de la huerta intensiva no es solo para los que tienen un espacio limitado en el jardín; más bien, una huerta intensiva concentra sus esfuerzos de trabajo para crear un entorno ideal para las plantas, lo que brinda mejores rendimientos. |
Nov 6, 2023 | 426-335s (SPES-427P) | ||
Selecting Landscape Plants: Boxwoods | Aug 2, 2023 | 426-603 (HORT-290P) | |||
Selecting Landscape Plants: Groundcovers | Landscapes are composed of plants that form ceilings, walls, and floors spaces. Groundcovers serve as attractive carpets of foliage that cloak and beautify our landscape “floors” (fig. 1). A groundcover is a low-growing plant species — 3 feet tall or shorter — that spreads to form a relatively dense layer of vegetation. In covering bare soil, groundcovers reduce soil erosion and provide habitat for insects and other animals, along with a host of other positive environmental effects. |
Nov 6, 2023 | 426-609 (HORT-31P) | ||
Shrubs: Functions, Planting, and Maintenance | What is a shrub? A shrub is generally considered a multi-stem woody plant that is less than 15 feet tall. Of course, this and other plant size categories are definitions contrived by humans to categorize nature. What is the difference between a large shrub and a small tree? In many cases, there is none. A shrub does not become a tree just because it grows higher than 15 feet. Classifying plants into ground cover, shrub, and tree designations are aids to allow us to conveniently classify and describe plants, albeit with a significant amount of ambiguity. |
Nov 6, 2023 | 426-701 | ||
Planting Trees | Jun 24, 2022 | 426-702 (HORT-248NP) | |||
Using Compost in Your Landscape | Mar 13, 2021 | 426-704 (SPES-304P) | |||
Creating a Water-Wise Landscape | Feb 2, 2021 | 426-713 (HORT-200P) | |||
Diagnosing Plant Problems | Something is wrong with your plant. What’s the cause? You can begin to determine the cause of the problem by taking on the role of Sherlock Holmes – be a keen observer and ask many questions. Diagnosing plant problems is often a difficult task. There can be many different causes for a given symptom, not all of them related to insects or diseases. The health of a plant may be affected by soil nutrition and texture, weather conditions, quantity of light, other environmental and cultural conditions, and animals, including humans. Complicating this scenario is the fact that any two of the above factors can interact to give rise to a problem. For example, a prolonged period of drought may weaken plants so that they are more susceptible to pests; this is typically observed with boxwoods. |
Nov 6, 2023 | 426-714 | ||
Problem-free Shrubs for Virginia Landscapes | The most effective form of plant disease control in the landscape is prevention. Disease prevention can be as simple as choosing the right plant for the right place at planting time. This fact sheet was developed as a guide to shrubs that generally experience few problems in Virginia landscapes. Using these species for new plantings should help you avoid troublesome disease and insect problems in your landscape. |
Jun 27, 2022 | 450-236 (PPWS-69P) | ||
Arbustos ideales para los paisajes de Virginia (Problem-free Shrubs for Virginia Landscapes) | La forma más eficaz de controlar las enfermedades de los cultivos en nuestro jardín es la prevención. La prevención de enfermedades puede ser tan sencilla como elegir el cultivo adecuado para el lugar adecuado al momento de cultivar. Esta hoja informativa fue desarrollada como una guía de los arbustos que generalmente experimentan pocos problemas en los paisajes de Virginia. El uso de estas especies para las nuevas plantaciones debería ayudarle a evitar problemas de enfermedades e insectos en su jardín. |
Aug 7, 2023 | 450-236s (SPES-429s) | ||
Problem-free Trees for Virginia Landscapes | Many of the tree species commonly planted in Virginia landscapes suffer from disease problems. Although some diseases can be cured, most must be controlled on a preventative basis. The best option for new plantings is to choose species that have a low risk of developing disease.
Listed below, in alphabetical order, are some choices of problem-free trees for Virginia landscapes. |
Jun 29, 2022 | 450-237 (PPWS-70P) | ||
Goldenchain tree, Laburnum × watereri | Goldenchain tree is a small tree that is primarily noted for its very showy pendulous flowers (16 inches plus in May). This species is best grown in zones 5 to 7 and generally requires afternoon shade. Plants in full sun are often stressed and succumb to pest problems. ‘Vossii’ is a long-flowered cultivar. |
Feb 1, 2024 | HORT-10NP | ||
Hinoki Falsecypress, Chamaecyparis obtusa | Hinoki falsecypress is a medium to large conifer. There are numerous cultivars that are more popular and prevalent in the nursery trade than the species. However, the species is a very beautiful conifer and well worth the hunt in garden centers or mail order nurseries. In my opinion, the hinoki falsecypress (species, not a cultivar) is more desirable than the sawara falsecypress (Chamaecyparis pisifera species, not a cultivar) since hinoki falsecypress foliage is denser and brighter green, and the bark is a brighter red-brown color. Cultivars vary in size (growth rate), foliage size and color, and form. |
Feb 1, 2024 | HORT-11NP | ||
Japanese Cryptomeria, Cryptomeria japonica | Japanese cryptomeria is a handsome medium to large conifer with a conical to narrow conical form. This species is fast growing and is relatively popular in the trade. If lower limbs are removed, one can observe a beautiful orange-brown bark (on most trees). The foliage tends to turn brownish on the south side of the plant in winter due to desiccation; however, foliage will turn green in spring. Japanese cryptomeria does have a few disease problems, although these are not considered a major issue at this point in time. |
Feb 1, 2024 | HORT-12NP | ||
Japanese Stewartia, Stewartia pseudocamellia | Japanese stewartia is a strikingly beautiful small tree. It has very showy white flowers with gold-colored stamens in June; bright maroon-red fall foliage color; and with age develops bark with a patchwork of brown, orange-brown, and cream colors. Bark characteristics vary from tree to tree and some trees have lustrous bark. |
Feb 1, 2024 | HORT-13NP | ||
Japanese Zelkova, Zelkova serrata | Japanese zelkova is a medium to large shade tree with a distinct vase shape. This species is quite drought and heat tolerant; its use as a street tree species is testimony to its toughness. Fall foliage colors range from fair to quite good (orange to bronze-red to maroon) and will vary from tree to tree (seedling-grown trees) or from cultivar to cultivar. |
Feb 1, 2024 | HORT-14NP | ||
Katsuratree, Cercidiphyllum japonicum | Katsuratree is a magnificent medium to large shade tree. Its accolade-deserving qualities are its form, beautiful foliage, and bark. Seedling-grown trees have a variable form ranging from upright oval to pyramidal to wide spreading. This species has a tendency to develop major branches near ground level, and if one has ample space, such low slung trunks give the lower portion of the tree a majestic “octopus-like” appearance. |
Feb 1, 2024 | HORT-15NP | ||
Kousa Dogwood, Cornus kousa | Oct 1, 2018 | HORT-16NP | |||
Lacebark Pine, Pinus bungeana | Lacebark pine is a medium (sometimes large) conifer species that has strikingly beautiful bark. Bark is a camouflage-like patchwork of greens, silvery-white, creams, browns, and red-browns. There is a great amount of tree to tree variation in bark color; patchwork of colors begins to appear on approximately 2 inch diameter branches. |
Mar 5, 2024 | HORT-17NP | ||
Leyland Cypress, Cupressocyparis leylandii | Leyland cypress is a fast-growing conifer that is one of the most popular landscape conifers in the eastern U.S. In addition to its vigor, this species is relatively drought tolerant and can be pruned into a hedge. |
Mar 5, 2024 | HORT-18NP | ||
Mimosa (Silk-tree or Albizia), Albizia julibrissin | Mimosa is a fast-growing small tree with very attractive pink pin cushion-like flowers in summer. This species has tropical-like foliage (bipinnately compound foliage with very small leaflets) that confers a very fine texture to the tree. |
Mar 5, 2024 | HORT-19NP | ||
Norway Spruce, Picea abies | Norway spruce is a medium to large conical conifer. When young (first 10 years or so), the plant is stiffly conical. With age, the secondary branches hang from the primary horizontal branches. |
Mar 5, 2024 | HORT-20NP | ||
Paperbark Maple, Acer griseum | Paperbark maple is a small tree with exceptionally beautiful peeling cinnamon-colored bark. Most branches, those that have a diameter about one-half inch and larger, will have peeling (exfoliating) orange-brown bark. |
Mar 7, 2024 | HORT-21NP | ||
Red Buckeye, Aesculus pavia | Red buckeye is typically a multi-trunk small tree (large shrub). Its claim to fame is the red flowers that cover the plant in April/May. Flower stalks (panicles) are about 8 inches long with 2 inch long red tubular flowers. Flowers are pollinated by ruby-throated hummingbirds. |
Mar 6, 2024 | HORT-22NP | ||
River Birch, Betula nigra | River birch is a fast-growing shade tree species. As the common name implies, river birch trees tolerate wet soils and are a very suitable species for portions of the landscape that characteristically have moist soil, such as low areas or in poorly drained soils. |
Mar 5, 2024 | HORT-23NP | ||
Saucer Magnolia, Magnolia ×soulangeana | Saucer magnolia is generally a small (occasionally medium) multi-stem tree that is known for its outstanding flower display in March (February in southern U.S. and April in northern U.S.). Flowers are about 8 inches in diameter; outer sides of petals (actually called tepals; about 9 tepals) are various shades of pink-purple while inner sides of tepals are white. |
Mar 5, 2024 | HORT-24NP | ||
Sawara Falsecypress (Japanese Falsecypress), Chamaecyparis pisifera | Sawara falsecypress is a medium to large conifer. There are numerous cultivars that are more popular and prevalent in the nursery trade than the species. Cultivars vary in size (growth rate), foliage type and color, and form. Many of the cultivars are considered “dwarf” since they do not attain the mature size of the species. |
Mar 5, 2024 | HORT-25NP | ||
Scotch Pine, Pinus sylvestris | Scotch pine is a medium tree. Like most pines, the first 20 or so years of its life it has a conical shape and with maturity it loses its lower limbs and has an irregular flat topped or oval shape. Scotch pine has a relatively showy orange colored bark (with the exception of the lower trunk). It is also relatively drought tolerant, thus it is suitable for landscape sites that tend to be dry. |
Mar 6, 2024 | HORT-26NP | ||
Sourwood, Oxydendrum arboreum | Sourwood is a small slow-growing tree although forest specimens exceed this small status. This species is certainly worthy to be a specimen plant (sufficient attributes to be featured as a focal point). Sourwood has beautiful lustrous foliage in the growing season which turns a bright maroon to pink-red in the fall. |
Mar 6, 2024 | HORT-27NP | ||
Star Magnolia, Magnolia stellata | Star magnolia is a small multi-stem tree that is known for its outstanding flower display in March (February in southern U.S. and April in northern U.S.). Flowers are about 3 to 4 inches in diameter and fragrant; outer sides of petals (actually called tepals; about 12 to 18 tepals) are white or blushed with pink while inner sides of tepals are white. |
Mar 6, 2024 | HORT-28NP | ||
Umbrella-Pine (Japanese Umbrella-Pine), Sciadopitys verticillata | Umbrella-pine is a beautiful slow-growing conical conifer. Its beauty is mostly derived from the unusual texture that is imparted by the glossy dark-green needles that occur in whorls along the stem. |
Mar 6, 2024 | HORT-29NP | ||
Washington Hawthorn, Crataegus phaenopyrum | Washington hawthorn is a small tree (single or multiple trunks) with showy white flowers in June. Trees produce an abundance of persistent glossy bright red fruit (about 0.25 inches in diameter) that result in a spectacular fruit display that persist into winter months. |
Mar 6, 2024 | HORT-30NP | ||
American Hornbeam, Carpinus caroliniana | American hornbeam, also called blue beech, musclewood, water beech, and ironwood, is a small to medium tree. In its youth, and even sometimes at maturity, this species tends be multi-trunked and densely branched. It also tends to develop major branches near ground level which can be a desirable or undesirable characteristic depending on how this species is intended to be used in the landscape. |
Mar 6, 2024 | HORT-5NP | ||
American (Fagus grandifolia) and European (Fagus sylvatica) Beeches | Beeches, both the American and European species, are large stately and noble trees. They have a smooth sensuous dark gray bark that is exceptionally attractive. Unfortunately, this feature often beckons graffiti practitioners to denigrate trees by carving their initials on trunks. |
Mar 6, 2024 | HORT-6NP | ||
Chinese Elm (Lacebark Elm), Ulmus parvifolia | Chinese elm is a medium to large fast-growing shade tree. This species is quite tolerant of drought and poor soil; hence, it has been extensively used in urban situations. There are numerous cultivars; cultivar selection criteria include cold hardiness, form, growth rate, foliage characteristics, and bark showiness. |
Mar 6, 2024 | HORT-7NP | ||
Chinese Pistache, Pistacia chinensis | Chinese pistache is a medium-size shade tree. It is quite tolerant of full sun, hot, and dry conditions (once established). This species has separate male and female plants (dioecious); female plants (if male trees are present) will produce clusters of reddish pea-size fruit that are somewhat attractive. |
Mar 7, 2024 | HORT-8NP | ||
Selecting Plants for Virginia Landscapes: Showy Flowering Shrubs | This publication features small, medium, and large flowering shrubs (five of each category) with photos. All photos are by the author. There are at least eight shrubs from each category noted in a table (without photos) at the end of this publication. All shrubs — featured or in the table — are landscape worthy and are especially suited to landscapes in Virginia and the Mid-Atlantic States. |
Jul 30, 2020 | HORT-84P | ||
Douglasfir, Pseudotsuga menziesii | Douglasfir is a large and stately narrow conical conifer that is native to the Pacific Northwest (P. menziesii var. menziesii) and Rocky Mountains (P. menziesii var. glauca). Trees in native habitats are often taller than 100 feet; however, landscape trees rarely exceed 50 feet. |
Mar 8, 2024 | HORT-9NP | ||
Edible Landscape Species – Trees | Oct 21, 2021 | SPES-316 | |||
Edible Landscape Species – Shrubs, Vines, and Groundcovers | Oct 21, 2021 | SPES-317 | |||
Comparison of Raised Bed Methods, Materials, and Costs | Sep 29, 2022 | SPES-425NP | |||
Arbustos ideales para los paisajes de Virginia (Problem-free Shrubs for Virginia Landscapes) | Dec 5, 2022 | SPES-429P |