Archive for the ‘Invasive species’ Category

Amur Cork Tree

Amur corktree (Phellodendron amurense) is native to Northern China, Korea and Japan (USDA hardiness zones 4-9). Amur corktree is a fast growing, upright branched tree that makes an excellent yard or shade tree. Corktree grows in a wide range soils, and tolerates soil pH between 5.0 to 8.2. It does best in moist, well-drained soils, […]

Uniquely Different Chinese Flame Tree

Chinese flame tree, aka bougainvillea goldenrain tree (K. bipinnata), is another tree option in U.S. southern landscapes (USDA hardiness zones 7-10). It is closely related to the more widely planted goldenrain tree (Koelruteria paniculata). This fast growing tree develops into a nice 20-40 feet tall medium-size tree with an irregular canopy. Chinese flame tree is highly drought tolerant (after one year established). […]

Tree Diversity Important In Urban Parks And Streets

              In recent years urban tree diversity has become a buzz topic. The threat of losing entire street plantings to a deadly exotic disease or pest has to often become the reality. Nearly a century ago, urban tree-lined thoroughfares were laid bare by losses of American elms (Ulmus americana) and […]

What You Should Know About Herbicides

              By definition a weed is any plant that you don’t want in your garden. Herbicides are vegetation killers and  classified as a pesticide that kills weeds. When used incorrectly, herbicides may injure good plants as well. Always read and understand the package directions before using. In a lawn or garden, you may be trying […]

All About Thistles

                Some weeds are very nasty and on top of my list are the dreadful thistles. Learn the lifecycles of those in your region and the proper method to eliminate them. Canada thistle (Cirsium arvense) is a perennial species found in many areas of the eastern U.S. Other thistles in my region are bull and […]

Getting Rid Of Poison Ivy

              Poison ivy (Toxicodendron radicans) is a woody perennial vine or small shrub that is grows wild in fields, woodlands, and home landscapes. As a vine, poison ivy has 3-leaf (trifoliate) compound leaves; leaf margins may be entire or tri-lobed. It is frequently misidentified as Virginia creeper (Parthenocissus quinquefolia), which has compound […]

Less Invasive Rose Of Sharons (Altheas)

            In several states rose of Sharon or altheas (Hibiscus syriacus) are classified as exotic (non-native) invasive shrubs (USDA hardiness zones 5-8). Their seedlings are invading U.S. woodlands. Plant breeders are now developing less invasive cultivars. The double-flowered altheas produce far fewer fertile seeds; stamens and pollen sacs are mostly embedded within the flower petals. Azurri Blue Satin® is […]

Positive Facts About Tree Of Heaven

Tree of heaven (Ailanthus altissima) is a hated tree and tagged noxious and invasive across the U.S. (USDA hardiness zones 4 to 8). This aggressive species is indigenous to China and seems almost without limits as to where it takes root across the U.S. It has numerous nicknames, including “trash can tree”. It is the […]

Tree Of Heaven Grows Almost Everywhere (Unfortunately)

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 […]

Sycamore Maple Performs In Cooler Regions

              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 […]