laboratory experiment carried out to protect potato tubers from the potato tuber moth (PTM) infestation during storage. At the length of evaluation the effectiveness of four plant oils: orange oil, Colocynth oil, Marjoram oil and chilli oil & four plant powder: Ginger, Cinnamon, Thyme and Rosemary and an insecticide Match 5% SC (Lufenuron) against P. operculella. The inspection focused on certain biological aspects such as larval penetration, pupation and adult emergence. The results indicated that, the selected oils were arranged descending based on larval penetrations as following: Marjoram oil < chilli oil < orange oil < Colocynth oil, while the selected powdered as Ginger < Cinnamon