Norway spruce (Picea abies) is a large pyramidal evergreen conifer. It is native to the mountains of northern and central Europe where it often matures to 100 feet or more in height. In the cool temperate areas of the U.S. and Canada, Norway spruce is widely planted, typically reaching 50 to 80 feet tall at maturity (USDA hardiness […]
Archive for the ‘Evergreen’ Category
Stylish Boulevard Cypress
A twist here…a turn there, that’s the unique growth of Boulevard Cypress (Chamaecyparis pisifera ‘Boulevard’). It is a popular medium-sized evergreen shrub for home and commercial landscapes (USDA hardiness zones 5-9). Boulevard cypress exhibits a twisted pyramidal form with soft, silvery blue foliage that also grows in a slightly twisted manner. The fine, […]
‘PeeDee Ingot’ Liriope Brightens Dark Areas
If you live in the Southeastern U.S., another variety of liriope probably will not impress you. Here we call it “monkeygrass”. PeeDee Ingot liriope (Liriope muscari ‘PeeDee Ingot’) is no ordinary ground cover (USDA hardiness zones 6-10). ‘Peedee Ingot’ liriope is named after the Peedee River in South […]
Growing Zone 6 Hardy Camellias 101
Drs. William L. Ackerman with the USDA (deceased) developed bred a series of interspecific crosses between C. oleifera and C. sasanqua, C. hiemalis, or C. vernalis selections. Many, not all, are identified as the Winter series because they bloom in the fall into very early winter. Dr. Clifford […]
Take A Second Look At Canadian Hemlock
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 […]
Mt. Cuba Center Evaluates Heuchera (Coralbells) Cultivars
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 […]
Many Shapes and Sizes Of Cryptomerias
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 […]
New Christmas Roses (Hellebores) Greatly Improved
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 […]
Nellie R. Stevens Holly
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, […]