Category Archives: Invasive Plants

Invasive Plant Factsheet: Japanese Barberry (Berberis thunbergii)

2020 Invasive Plant Factsheet:
Japanese Barberry (Berberis thunbergii) was originally promoted for use in hedgerows. It is still widely used for that purpose due to its resistance to deer browsing. As early as 1910, it was observed to be escaping from cultivation, and it now poses a threat to forests and parkland from New England to North Carolina. Continue reading

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Invasive Plant Factsheet: Chinese & Siberian Elms (Ulmus parviflora & U. pumila)

2020 Invasive Plant Factsheet: Chinese & Siberian Elms (Ulmus parviflora & U. pumila) 
These trees are classified as invasive in 25 states, including Virginia, and are locally prolific. Their quickly developing fruits can be dispersed by wind away from landscape plantings, and grasslands and stream banks are vulnerable to infestation. Continue reading

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Invasive Plant Factsheet: Privets (Ligustrum japonicum & L. sinense)

2020 Invasive Plant Factsheet:
Privets (Ligustrum japonicum & L. sinense) disrupt native plant communities in the understory of forests throughout the southeastern U. S., including Virginia. Both Arlington County and Alexandria list these species as invasive. Continue reading

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Invasive Plant Factsheet: Nandina (Nandina domestica)

2020 Invasive Plant Factsheet: Nandina (Nandina domestica)
This popular evergreen shrub was originally introduced to the U.S. from Asia in 1804 and is still widely available in the nursery trade. Unfortunately, its colorful berries are one of the means of its escape from gardens, and both Alexandria and Arlington list it as invasive. Continue reading

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