![]() ![]() ![]() If not, read on anyway! Who knows what you’ll learn?īeing native to tropical and subtropical places such as India, Thailand, Sri Lanka, and Papua New Guinea, cashew tree might be difficult to grow, depending on your Hardiness Zone. If that weren’t bad enough, the seed coat of cashew drupes contains a toxic oil that is acidic enough to burn your skin. If you are still interested in growing your own cashews, read on. Just under the bark, these plants have resin canals filled with the stuff. That’s because they are all in the same family! The sap of all cashew family plants, called urushiol, is something to be reckoned with as it can be highly toxic. They contain the same chemical found in poison ivy, poison oak, and poison sumac. Watch out, though - some of them might try to hurt you!ĭid you know that raw cashews are poisonous? They are. Cashew family taxonomy includes dozens of genera, most of which are not edible. Not too long ago, pistachio plants were brought into the cashew fold, but there are still discussions about this in scientific corners. Like many other families, there is heated debate about who belongs and who does not. The cashew family also includes mastic trees ( Pistacia lentiscus ) and varnish trees ( Toxicodendron vernicifluum ), which are the trees that give us varnish, lacquer, and useful oils. typhina ) are used to make a drink called “sumac-ade”. Here, in North American, smooth sumac ( Rhus glabra ) and stag horn sumac ( R. ![]()
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