Archive for the ‘Garden Problems’ Category

European vs Asian Pears

  Growing pears in the Southeastern U.S. is both challenging and rewarding. Both the European (Pyrus communis) and Asian (P. pyrifera) pears are susceptible to fireblight (Erwinia amylovora), a bacterial disease with no satisfactory cure. Two popular European pear varieties, ‘Bartlett’ and ‘Bosc’, are highly susceptible to fireblight. Varieties found to be fire blight resistant are: ‘Warren’, […]

Growing Elderberries in the Garden

Elderberry (Sambucus canadensis) is native to eastern North America, commonly found growing in open fields, thickets, fence rows, and along roadsides. Elderberry has pinnate leaves with toothed leaflets. Large flat clusters of small white flowers are evident by early summer, followed by large clusters of round purple-black fruit in late summer and fall. The fruits are […]

Autumn Colors Conclude with Callery Pears

  Callery pear (Pyrus calleryana) has been declining in planting popularity. But its scarlet red leaf color is both sensational and reliable every autumn in the Southern Appalachian region (USDA zones 6 and 7).  Most people identify the tree by its cultivar name, e.g. ‘Bradford’, Aristocrat®, ‘Cleveland Select’, ‘Redspire’ pear. There are many other cultivars. Callery pears are tough reliable medium sized trees which […]

European Beech Prefers Cool Climes

European Beech (Fagus sylvatica) is native to the cool temperate regions of Europe. In the U.S. it is more at home in the Northeast, Upper Midwest,  and Northwest regions (USDA Hardiness  Zones 4 to 7) where summers are cool. European beech grows in full sun and moist, well-drained soils, ranging from mildly acidic to low basic. The tree suffers in […]

For Lovers and Tree Huggers – American Beech

  Mighty as an oak pretty much describes American beech (Fagus grandifolia) as well.  Enjoy all four seasons of American beech: spring/summer dark green leaves, dark tan colored fall foliage, long pointed winter buds, and bluish gray bark. It is a large 50-70 foot woodland tree and tolerates incredible amounts of shade. Slow growing beeches are long-lived and best planted on […]

Making A Case for Mugo Pine

Mugo pine (Pinus mugo) is a slow growing needle evergreen shrub of variable heights ranging from 5 feet to 20 feet and more. Mature height depends on the cultivar planted and environmental conditions on site. Mugo pine is native over many hundreds of miles of alpine climes across Europe. It is winter hardy in USDA zones […]

‘Snow Flurry’ Zone 6 Hardy Camellia

‘Snow Flurry’ camellia is a broadleaf evergreen shrub with good plant vigor. It was one of the first zone 6 cold hardy camellias hybridized by Dr. William Ackerman and released by the U.S. National Arboretum in 1986.   Snow Flurry grows into a 4 feet tall by 6 feet wide shrub over a 10 year […]

Irrigate Evergreens This Winter

Fall slowdown in the garden brings many of us back indoors to prepare for the winter holidays ahead. A number of serious canker diseases attack evergreens in the fall and winter if soil moisture is not plentiful. These diseases include botryosphaeria, cytospora, phomopsis, and seiridium cankers. Each organism is capable of causing branch dieback or […]

Natural Evergreen Needle Drop in Autumn

Some needle loss on evergreens in the fall is natural. As night time temperatures cool, needles in the interior of many evergreen trees or shrubs regularly turn brown (or golden yellow) and drop off. Needle loss is most obvious on pines (Pinus spp.) and arborvitae (Thuja spp.) in the Southern Appalachian region (USDA zones 6 and 7). The […]

Virginia Creeper – A Question of Place

Autumn foliage color is upon us in the Southern Appalachian region (USDA zones 6 and 7). On a weekend drive through the Smoky Mountains, vivid red Virginia creeper (Parthenocissus quinquefolia) foliage draped highway fences and tree branches. Virginia creeper foliage peaks 2 to 3 weeks ahead of most woodland trees and shrubs. Lots of gardeners […]