Myagrum Perfoliaum By postpest Aug 18, 1952 Myagrum Perfoliaum Myagrum Perfoliaum is considered a serious weed of broadleaf crops such as: Chickpeas, Canola, Lupins, Faba beans, and Lentils. Sep 20, 1978 Myagrum Perfoliaum Myagrum Perfoliaum thrives on alkaline clay soils.