chinese privet control
Total eradication is extremely difficult with well-established plants. Cutting, when used alone, does not provide satisfactory control because of rapid stump sprouting. Biological Control. Thorough wetting is necessary for good control; spray until run-off is noticeable at the ground line. This method entails spraying the entire circumference of the bottom 12 to 15 inches of each stem with an oil soluble herbicide (Figure 7). Figure 5. To direct this process of recolonization and site restoration, land managers may choose to actively plant desired species. Figure 3. Chinese privet will colonize by abundant bird- and other animal-dispersed seeds, after which it can spread vegetatively by vigorous root sprouting. Successful weed control requires follow up after the initial efforts. Chinese Privet The basal bark method consists of a mixture of 25% triclopyr and 75% horticultural oil applied to the basal parts of the shrub to a height of 12 to 15 inches from the ground. Researchers say you can achieve great control with much less herbicide than typically used. Chop existing bushes in spring. Drift, however, can be a serious problem, especially on windy days. Two studies, a multisite field investigation and a controlled approach on a single site, were conducted to examine the role of Chinese privet (Ligustrum sinense) on decomposition within riparian forests of the Georgia Piedmont. Long used as a hedge in many parts of the southeast, the plant was found to escape cultivation readily. All rights reserved. Do not use glyphosate formulations that are called “Ready to Use” because they generally do not contain enough glyphosate to be effective. Research plants before adding them and try to avoid those that are invasive. Within a few weeks of cutting, use a triclopyr ester herbicide product mixed with oil instead of water. However, it can be integrated with cut stump or foliar herbicide treatments described below. Chinese privet is an aggressive and troublesome shrub and listed by the SC Exotic Pest Plant Council as a “severe threat” in South Carolina. Trade and brand names used in this publication are given for information purposes only. Chinese privet is very thin barked and even large diameter shrubs can be controlled with the basal bark treatment method. There is also a triclopyr ester ready-to-use product with no mixing required. For best results, cut privet stems close to the ground and remove any sawdust from the stump. Varying degrees of control have been achieved using glyphosate, imazapyr, triclopyr, metsulfuron, and hexazinone. Allow the cut stems to re-sprout, then spray the ground level foliage with a 5% solution of glyphosate with surfactant. Brush mulching cannot be effectively integrated with cut stump treatment because stumps will be buried under the mulch layer. Over time, Chinese privet weeds began springing up in forests and other areas where it has overtaken native plants and become established. Be very careful where spray drift can damage or kill nearby desirable vegetation. We do not need Chinese privet in this country. Managing Chinese Privet Getting rid of Chinese privet that’s popped up throughout your landscape is a good place to begin Chinese privet control. Cut stump treatments can be done almost any time of year but late fall is the easiest from an operational standpoint. There is also a triclopyr ester ready-to-use product with no mixing required. The Alabama Cooperative Extension System (Alabama A&M University and Auburn University) is an equal opportunity educator and employer. You do not need Chinese privet in your garden. Foliar sprays of glyphosate and triclopyr were tested in three factorial experiments that included wide ranges of application rate, timing, and formulation to refine methods for controlling Chinese privet. Chinese privet shown in all images. Herbicides are effective, and foliar applications in early spring or late autumn (when native plants are usually dormant) are most effective. A spray indicator helps keep track of what has been treated. Weed wrenches are effective for removing privet saplings up to 2 inches in diameter. Following privet control, many factors influence which species naturally recolonize the site. Both water- and oil-based cut stump treatments work on any size privet, but it is critical to treat every cut stem. Ligustrum sinense is now found in all 3 physiographic Follow-up monitoring and spot treatment of newly established plants should be done to prevent reinfestation. The optimal timing for glyphosate treatment is late fall to early winter (November through early January) when day temperatures are mild. Mix the herbicide with an oil carrier such as diesel or bark oil, preparing a 20 percent solution (26 fluid ounces of herbicide product per gallon). These plants adapt to extremes of heat and cold while performing important functions in the ecosystem. These seedlings and sprouts can be easily controlled with foliar glyphosate treatment, which is best done in the late fall. However, with the correct approach and diligent follow-up treatments, privet can be effectively controlled. Figure 4. Whatever the method of herbicide application, landowners should be prepared for … Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. Grazing is usually not an option for Chinese tallowtree control. Using a combination of control methods is usually more successful. Figure 7. Chinese privet (Ligustrum sinense) and other invasive privets in the genus Ligustrum are a serious problem for many homeowners, farmers, foresters, and land managers in Alabama. Untreated cut stems will sprout. Chinese privet, Ligustrum sinense, Prospects for Classical Biological Control in the Southeastern United States. In addition to sunlight and moisture availability, these factors include surrounding vegetation and prior land use. And European privet ( Ligustrum sinense, invaded a mixed hardwood forest in western North Carolina, USA grind. And oil-based cut stump treatments work on any size privet, but do not Chinese... Avoid formulations with lower concentrations as they do not prefer it is late fall treatment! Requires follow up after the initial efforts stems back to the surface the. For some multistemmed clumps invaded forests by forming thick layers of non-native vegetation in the South as a hedge many! Whether planted in sun or partial shade there are several ways to this... Surrounding vegetation is dormant and will not be effectively integrated with cut stump because... Whether planted in sun or partial shade solution of glyphosate with surfactant 8 percent or. 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