Tree of heaven (Ailanthus altissima) is one of the most aggressive trees on planet Earth (USDA hardiness zones 4 to 8). This large tree, indigenous to China, was introduced in North America in 1748 and brought to New York City in 1820 as a street tree and a food source for silkworm caterpillars. The tree […]
Archive for the ‘winter hardiness’ Category
Tree Of Heaven Grows Almost Everywhere (Unfortunately)
Posted by Hugh on January 30th, 2015
Posted in acidic soil, Aggressive grower, alkaline soil, Deer resistant, Disease resistant, Drought tolerant, Heat Tolerance, Invasive species, Large Shade trees, Southern Appalachian Region, Summer flowering, Tree of Heaven (Ailanthus), Trees & Shrubs, winter hardiness 
Comments Off on Tree Of Heaven Grows Almost Everywhere (Unfortunately)Winter Blooming Flowering Apricot
Posted by Hugh on January 28th, 2015
Flowering apricot (Prunus mume) is native to southeastern Asia(USDA hardiness zones 6-8). It is primarily grown for its mid to late winter bloom of pink flowers. This small 15-20 feet tall tree grows in average well-drained, acidic soils in full sun to partial shade. Avoid planting in heavy or wet soils. Most abundant flowering occurs in full sun. In the […]
Posted in acidic soil, Attracting birds, Bee Favorite, compact tree, Disease prone, Drought tolerant, Edible fruits, Flowering, Flw. apricot (Prunus mume), Fragrant, Harvest Time, Heat Tolerance, Planting tips, Pruning, Purchasing Plants, Rabbit/deer Protection, Soil drainage, Southern Appalachian Region, Spring flowering, Summer heat tolerant, Trees & Shrubs, Winter flowering, winter flowering tree, winter hardiness, Winter Protection Comments Off on Winter Blooming Flowering ApricotSycamore Maple Performs In Cooler Regions
Posted by Hugh on January 21st, 2015
Sycamore maple, aka planetree maple (Acer pseudoplatanus) is indigenous to northern and central Europe where it is a popular landscape tree. Very commonly planted in the northeastern U.S. in the early 20th century, this large 50-60 foot tree is rarely found today (USDA zones 4 and 7). A mature specimen in Jonesborough, Tennessee (zone 6) is over […]
Posted in acidic soil, alkaline soil, Disease resistant, Drought tolerant, Invasive species, Large Shade trees, Maples (Acer), Propagation (Seed), Purchasing Plants, Soil drainage, Southern Appalachian Region, Spring flowering, Trees & Shrubs, Winter bark, winter hardiness Comments Off on Sycamore Maple Performs In Cooler RegionsTake A Second Look At Canadian Hemlock
Posted by Hugh on January 18th, 2015
Canadian hemlock (Tsuga canadensis) is a native evergreen species which is available in many forms: prostrate, globose, weeping, fastigiate and variegated (USDA Hardiness Zones 3-7). Its tremendous versatility as a hedging tree or shrub in planting sites is also a great reason to continue to include hemlock in the landscape. Hemlock may […]
Posted in Attracting birds, compact shrub, container shrub, DWARF CONIFERS, Evergreen, Hemlock (Tsuga), Insect (Pest) Problems, Native Plant, Planting tips, Privacy Screen, Propagation (Cuttings), Propagation(grafting), Purchasing Plants, Southern Appalachian Region, Summer heat tolerant, Trees & Shrubs, Wildlife attractant, Winter Garden Interest, winter hardiness Comments Off on Take A Second Look At Canadian HemlockMt. Cuba Center Evaluates Heuchera (Coralbells) Cultivars
Posted by Hugh on January 16th, 2015
Over the past quarter century, gardeners have enjoyed the wonderful heuchera revolution (USDA hardiness zones 4-9). A great many hybrid cultivars have been introduced with more arriving every spring. Unfortunately, the flood of new cultivars has given us a huge number of poor selections. As I talk with […]
Posted in acidic soil, compost, Deer resistant, Disease resistant, Evergreen, Ground cover, Heuchera (coralbells), mulching, Native Plant, Perennials, Propagation (dividing), Southern Appalachian Region, Spring flowering, Summer heat tolerant, watering tips, Winter Garden Interest, winter hardiness Comments Off on Mt. Cuba Center Evaluates Heuchera (Coralbells) CultivarsBlue Atlas Cedar Becoming Very Popular In Urban Landscape
Posted by Hugh on January 10th, 2015
Blue Atlas cedar (Cedrus atlantica ) hails from the Atlas Mountains in northern Morocco and Algeria (USDA hardiness zone 6). The cultivar ‘Glauca’ has been the popular choice because of its blue green foliage. Blue Atlas grows to 40-60 feet in height, but individuals over 70 feet are hard to find. Mature forms, those 50 […]
Posted in acidic soil, Atlas cedar (Cedrus), Disease resistant, Disease resistant, Drought tolerant, Evergreens, Heat Tolerance, Large Shade trees, Planting tips, Privacy Screen, Purchasing Plants, Soil drainage, Southern Appalachian Region, Staking, Summer heat tolerant, Trees & Shrubs, watering tips, Winter bark, winter hardiness Comments Off on Blue Atlas Cedar Becoming Very Popular In Urban LandscapeMany Shapes and Sizes Of Cryptomerias
Posted by Hugh on January 7th, 2015
Japanese cedar, aka cryptomeria, (Cryptomeria japonica) is the national tree of Japan and is also indigenous to China (USDA hardiness zones 5 to 8). Cryptomeria cultivars vary greatly from very dwarf to rounded shrubs to large tree forms. Needle-like foliage may be dark green, medium green, golden or contorted leaves. Cryptomerias tolerate hot humid summers and […]
Posted in acidic soil, Cryptomeria (Japanese cedar), Deer resistant, Drought tolerant, DWARF CONIFERS, Evergreen, Landscape ideas, Privacy Screen, Propagation (Cuttings), Pruning, Southern Appalachian Region, Summer heat tolerant, Trees & Shrubs, watering tips, winter hardiness, Winter Protection Comments Off on Many Shapes and Sizes Of CryptomeriasDetermining A Plant’s Cold Hardiness
Posted by Hugh on December 21st, 2014
On-line nursery catalogs and plant labels at garden centers list the hardiness of the trees, shrubs, vines, and perennials that they sell. Many years ago the U.S. Department of Agriculture (USDA) developed the hardiness rating scale based on geographic location from northern Canada to southern Mexico. Most U.S. gardeners live within Zones 3 to 11. Don’t know […]
Posted in Environmental issues, Landscape ideas, Perennials, Purchasing Plants, Southern Appalachian Region, Trees & Shrubs, Tropical Plants (non-hardy), winter hardiness, winter injury, Winter Protection Comments Off on Determining A Plant’s Cold HardinessNew Christmas Roses (Hellebores) Greatly Improved
Posted by Hugh on December 18th, 2014
Christmas roses (Helleborus niger) is a winter flowering perennial. It is native to central and southern Europe (USDA hardiness zones 4-8) and is not as winter hardy as lenten rose (Helleborus x orientalis). Christmas rose tends to flower 1 to 4 weeks earlier, around the Christmas holidays in southern climes (zones 7-8). New selections of H. niger are better […]
Posted in acidic soil, alkaline soil, Container garden, Deer resistant, Disease resistant, Disease resistant, Evergreen, Fertilizing plants, Hellebores, Perennials, Planting tips, Poisonous or toxic, Pruning, Purchasing Plants, Slugs, Slugs, Snails, Soil drainage, Spring flowering, Summer heat tolerant, watering tips, Winter flowering, winter hardiness Comments Off on New Christmas Roses (Hellebores) Greatly ImprovedNellie R. Stevens Holly
Posted by Hugh on December 16th, 2014
Hollies and the winter season work well together. Female hollies with bright red fruits (yellow-fruited forms also) contrast with their glossy evergreen foliage. ‘Nellie R. Stevens’ holly (NRS), a female form, is a cross between English (Ilex aquifolium) and Chinese (I. cornuta) hollies. NRS is the popular holly choice in Southern landscapes (USDA hardiness zones 6 to 9). Hollies are dioecious, […]
Posted in acidic soil, Bee Favorite, Disease resistant, Drought tolerant, Evergreen, Green Privacy Screen, Ilex (hollies), Landscape ideas, mulching, plant nutrition, Planting tips, Propagation (Cuttings), Pruning, Soil drainage, Southern Appalachian Region, Summer heat tolerant, Trees & Shrubs, watering evergreens, Winter Garden Interest, winter hardiness Comments Off on Nellie R. Stevens Holly
