I was gently reminded today that just because something is natural does not mean it is healthy.  Decided to slice up some timber that I’d rescued from being burnt, which turned out to be Greenheart. The excellent online Wood Database gives us a full description of the timber:

Greenheart

The website also has a section on toxicity; Greenheart is one of the most potent (which might be why I had trouble breathing and felt generally pretty poor!);

Greenheart sensitizer, wheezing, severe throat irritation, splinters go septic, cardiac and intestinal disorders

The chart lists many species: http://www.wood-database.com/wood-articles/wood-allergies-and-toxicity/

So, a few words of wisdom; check what you’re cutting before you inhale plumes of dust! Saying that, I reckon the patio will look pretty good:

patio