OLE is different from lemon eucalyptus essential oil. OLE is an extract of the lemon eucalyptus tree that’s been enriched for PMD, its active ingredient. PMD itself can also be made in a lab.

The more than 700 species of eucalyptus include some that are small enough to be grown indoors. The young, ground, gray-green leaves of eucalyptus are especially attractive and different from the ...

What to grow under eucalyptus? Joy K. writes: I am looking for an 8- to 10-foot shrub or bush that will grow under eucalyptus trees. The neighbor has these trees, which we appreciate for the ...

Peter Ehrlich, Presidio forester, has imported 3 different types of eucalyptus and planted them in a test grove in the Presidio in San Francisco, Calif. on Wednesday May 20, 2009.