Tag Archives: Trees

Invasive Plant Factsheet: Norway Maple (Acer platanoides)

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

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Invasive Plant Factsheet: Sawtooth Oak (Quercus acutissima)

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

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Invasive Plant Factsheet: Japanese Maple (Acer palmatum)

2020 Invasive Plant Factsheet: Japanese Maple (Acer palmatum)
Due to its prolific seeding, this tree can escape from cultivation and spread into forests and along roadsides and streams. It is listed as a problem plant by the Mid-Atlantic Exotic Pest Plant Council and is reported as invasive in nearby Rock Creek National Park. Continue reading

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Small Trees Make Big Canopies

Our Free Tree project stems from concerns that our region’s tree canopy is shrinking fast as our largest trees fall victim to age, redevelopment, poor pruning practices around power lines, prolonged periods of drought, and record-high flash rainfalls. Many people seek to replant, but the instinct to plant a larger tree can lead to disappointing results, since larger nursery trees need extensive root trimming to be portable enough to sell, and their new owners often fail to give them enough water in their first year to survive. Continue reading

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