[APWG] NEWS: Botanic gardens blamed for spreading plant invaders

[Olivia Kwong]

http://www.newscientist.com/article/mg20928043.700-botanic-gardens-blamed-for-spreading-plant-invaders.html

Botanic gardens blamed for spreading plant invaders
17 March 2011 by Andy Coghlan
Magazine issue 2804

MORE than half of the world's most invasive plant species spread into new 
habitats from botanic gardens, an analysis of historic "alien" escapes has 
concluded. Although most cases analysed happened between the 1800s and the 
mid-1900s, there are reports of more recent releases which merit a 
tightening up of biosecurity, researchers warn.

See the link above for the full article text.