Traffic in plants and plant seeds

[Paul Cherubini]

Today over 90% of the 40 largest overwintering sites for the monarch
butterfly (a butterfly native to North America) along the California
coast occur in ornamental/agricultural plantings of exotic eucalyptus
trees. 

Good thing for the monarch that plant bigotry was not in vogue in the
late 1800's when these trees were imported from Australia.

Paul Cherubini, El Dorado, California
paulcher at concentric.net