Foreign Plants Invade Carlisle.
species from Asia and Europe compete with and conquer our native
North American plants and shrubs. Oriental Bittersweet Celastrus
orbiculatus, pictured here, an ornament on many a Thanksgiving table,
has a deadly choking action on trees and shrubs. Another pretty
invader is Burning Bush Euonymus alatus with brilliant fall color,
sold be every nursery and planted intensively around homes and along
highway corridors. Birds spread its copious seeds. For example,
three shrubs planted around a Hopkinton house have parented more
than 1000 offspring in the neighborhood.
threatens every open space in Carlisle and is the major target of
CCF’s joint control project with our conservation commission.
Introduced 200 years ago as hedges, they are still available from
nurseries. After 10 years Glossy Buckthorn reaches 10 to 15 feet
high as it has on Foss farm. Other invasive species frequently seen
in Carlisle are Purple Loosestrife, Japanese Honeysuckle, Autumn
Olive, and Multiflora Rose. Native plants like high bush Blueberries
and Cattails lose out.
Do WE Care
On a macro scale invasive plants cost the US economy $137 billon
each year in environmental damage, crop losses, control efforts
and public health problems. One hundred million acres are infected
with three million more added each year.
• On a local level we see natural habitats taken over, endangered
species further threatened, and migratory birds decline.
We Can Do
Don’t buy and plant invasives.
• Control and root them out (as our family did with Autumn
more information on invasives, contact New England Wild Flower
Society, 508-877-7630 or WWW.tncweeds.ucdavis.org
For information on alternatives to invasives refer to Cultivation
and Propagation of Native Tress, Vines and Shrubs by William
Cullina, a copy of which has been donated to the Gleason Library
or may be purchased from the New England Wild Flower Society