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Tag Archives: Trees
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
2020 Invasive Plant Factsheet: Autumn Olive (Elaeagnus umbellata)
Autumn Olive’s high seed production, as well as its adverse affect on the nitrogen cycle, now threaten native plant communities in many national parks in Virginia. Continue reading
2020 Invasive Plant Factsheet: Norway Maple (Acer platanoides)
Extensively planted in urban areas and still widely sold in nurseries, it has become invasive along the east coast as far south as Tennessee and North Carolina and also in the Pacific Northwest. Continue reading
2020 Invasive Plant Factsheet: Sawtooth Oak (Quercus acutissima)
Its rapid growth allows it to outcompete native oaks, and the dispersal by animals of its numerous acorns has caused it to become a problem species in forests along the east coast. Alexandria lists it invasive and Arlington designates is as a threat. Continue reading