In Galicia we have several native species from Australia and some classified as pests. Regarding the eucalyptus species, due to the fact that they are used for timber, renewal occurs every 25 years. The first wave of plantings was e. globulus, the second of e.nitens and now others are beginning to be seen. In general, the plantations occur in the coastal zone while in the interior the pine occupies a larger area.Are you anywhere near the stringybark (e. obliqua) gum trees in Galicia?