English Ivy

References

Adams, D.W.  2004.  Restoring American gardens.  Timber Press, Inc., Portland, Oregon, USA.

Allen, L.  2000.  Decking the halls.  Willow Creek Press, Minocqua, Wisconsin, USA.

Encyclopedia Britannica 2009.  <URL: http://www.britannica.com/EBchecked/topic/188041/English-      ivy>.  Accessed 28 March 2009.

Fell, D.  2007.  Encyclopedia of hardy plants.  Firefly Books Ltd., Buffalo, New York, USA.

Garden guides 2009.  <URL: http://www.gardenguides.com/plants/plant.assymbol=HEHE>.             Accessed 2 April 2009.

Global invasive species database 2005.  <URL:      http://www.issg.org/database/species/ecology.asp?si=469&fr=1&sts=sss&lang=EN>.        Accessed 7 April 2009.

Invasive.org 2009.  <URL: http://www.invasive.org/species/subject.cfm?sub=3027>.  Accessed 6       April 2009.

Kennedy, C.  2007.  A Family Christmas.  Hyperion, New York, New York, USA.

McDonald, E.  1995.  The 400 Best Garden Plants.  New York, New York, USA.

PCA 2006.  <URL: http://www.nps.gov/plants/alien/fact/hehe1.htm>.  Accessed 2 April 2009.

SE-EPPC 2003.  <URL: http://www.invasive.org/eastern/eppc/HEHE.html>.  Accessed 6 April 2009.

Taxonomy 2009.  <URL: http://danmarkltd.tripod.com/taxonomy/id1.html>.  Accessed 5 April      2009.

UCMP 2009.  <URL: http://www.ucmp.berkeley.edu/anthophyta/asterids/apiales.html>.  Accessed      5 2009.

USDA 2009. <URL: http://plants.usda.gov/java/profile?symbol=HEHE>.  Accessed 5 April 2009.