Traditional palm frond roof support on eucalypt poles (5yr old) rural Cuba 2007 The fast and staight growth of the eucalyptus exceed any local native species so are widely planted and used throughout Latin America. (Also they are not subject to the lyctid borer that is so problematic in Australia)
In the Earth Steward scenario, exotic species that were typically introducted for industrial uses will provide important. new renewable resources once industrial materials are unavailable and/or expensive. Fast grown forest species such as eucalyptus than can be used as round poles with minimal processing will replace sawn timber for most uses.