Hi everyone,
I am interested in growing some black locust (Robinia pseudoacacia) in my area, but I am wondering if it poses any risk for spreading fire. My land is located in a Pine/Eucalyptus/Acacia forest in coastal Portugal- which has been known to have forest fires due to the invasive Eucalyptus here. I just want to take precautions. Thanks for the advice!

In general, leafy deciduous trees that are not resinous (of which black locust is one such) are not nearly as flammable as others....for instance conifers and eucalypts, as you mention. So planting them around, or replacing flammable species with them, should help with fire danger. That said, anything will burn if the heat is intense enough, and it is always important to maintain clear space on the ground and between trees; especially near buildings.

Thanks for the great response! I'll make sure to keep an eye on the spacing/ overgrowth in the area.