`  ::Since the tallest Coast Redwood is about  and the ``World's Largest Blue Gum Eucalyptus`` on Mattole Road, Petrolia, CA measures nearly  high,  feet around, and has a spread of , the coast redwood is more than two times the height of the eucalyptus.  I am also not finding ``reliable sources`` for the height of the Petrolia tree, the best I could find was a Road Side America tip which suggests asking at the Petrolia Store for details of the tree.  Also I find in Spain a much taller Blue Gum Eucalyptus with a height of  in Río Landro, Viveiro, measured in 2010 as referenced by Monumental Trees.com.   ::On the U.S. Forest Service Eucalyptus globulus Labill. Bluegum Eucalyptus webpage, but referencing a magazine article ``The trees that captured California.`` Sunset August 1956:44-49, I find the following quotation about the Berkeley eucalyptus trees: The tallest stand in California is one planted in 1877 on the University of California campus at Berkeley; it contains trees that have been more than 61 m (200 ft) tall since 1956. ::At present the Berkeley, California grove is stated to be ... the tallest stand of hardwood trees in North America and the tallest stand of this type of eucalyptus in the world. This comes from The University of California, Berkeley, ``Strawberry Creek Tour 8. Eucalyptus Grove``. ::I hope this answers your question, again welcome to wikipedia!    `