> Further, there's some debate whether eucalyptus in California is beneficial or an invasive weed and whether attempts to introduce the pests' predators are a g

> Further, there's some debate whether eucalyptus in California is beneficial or an invasive weed and whether attempts to introduce the pests' predators are a good idea or not. Like pines, eucalypts drop toxic leaves, so all the other plants die. AFAIK, only Koalas can eat their leaves. The toxin is eucalyptus oil. Another strategy eucalypts have for eliminating the competition is exacerbating bushfires. Eucalyptus oil is highly flammable; and unlike pines, eucalypts are fire resistant.