A mysterious plant appeared in my garden and the beginning of spring. I was unable to identify the new arrival until last week when on the plant hosted a large number of striking black and yellow caterpillars that I could not ignore. As it turned out the plant was worse than the caterpillars which turned out to be the Cinnabar Moth imported from Asia in 1960 to combat the Ragwort plant in Washington State. I thought you gardeners might like the details on this shrub (or weed) that I found so interesting.