Japanese barberry (Berberis thunbergii) is a very popular landscape shrub. Japanese barberry is indigenous to Eastern Europe and Asia and is commonly planted in USDA hardiness zones 4-8. There is justified concern over the invasive nature of Japanese barberry. A number of states have declared most barberry species (Berberis spp.) to be invasive and have […]
Archive for the ‘Invasive plant’ Category
Efforts To Solve Japanese Barberry Invasive Problem
Posted by Hugh on March 11th, 2012
Posted in acidic soil, Barberry (Berberis), Disease resistant, Drought tolerant, Heat Tolerance, Invasive plant, Southern Appalachian Region, Spring flowering, Trees & Shrubs 
Comments Off on Efforts To Solve Japanese Barberry Invasive ProblemTrifoliate Orange –The Barbed Wire of the Plant World
Posted by Hugh on December 12th, 2011
Trifoliate orange (Poncirus trifoliata) is a hardy citrus native to China. T-orange is hardy to -15° F. This strong growing large shrub or small tree can reach 15 to 20 feet in height. Its foliage is deciduous and compound, compared to citrus trees with single simple evergreen leaves. T-orange prefers full day or partial (minimum of 6 hours) […]
Panicled Raintree Promises Showy Lantern Pods
Posted by Hugh on July 15th, 2011
Chinese flametree (Koelreuteria bipinnata) is also called bougainvillea raintree. This rare tree, available primarily from internet nursery commerce, deserves to be planted more. It has performed well in the Southern Appalachian region (USDA zones 6-b and 7) and is questionably hardy further north. Flametree is less popular in Southeastern landscapes than goldenrain tree (K.paniculata). Low branching […]
Posted in Chinese flametree, Invasive plant, Regional, Southern Appalachian Region, Summer flowering, Trees & Shrubs Comments Off on Panicled Raintree Promises Showy Lantern PodsIs Paulownia Invasive?
Posted by Hugh on May 24th, 2011
Paulownia or Empress tree (Paulownia tomentosa) is a medium to large 30-50 foot tree. It is extremely fast growing, brittle wooded tree, as much as 4 feet per year. Across the Southern Appalachian region (USDA zones 6 and 7), the large pale violet flowers of paulownia are easily visible in May, perched on branch tips. Its […]
Posted in Invasive plant, Paulownia (Empress tree), Southern Appalachian Region, Spring flowering Comments Off on Is Paulownia Invasive?
