Storage experiments were conducted at El-Barmon , Horticulture Research Institute during 2003 and 2004 In order to study the effect of different storage treatments , i.e anise , mint , fennel , eucalyptus oils (individuals or paris) / ambient temperature added to cold storage treatment on storability and bioconstituents of tubers (saved from summer harvesting) of two potato cvs (Diamant and spunta ) during 9 months storage period . The results could be summarized as follows :- 1 – Diamant and spunta cvs were significantly differed in their effect on sprouting , weight loss and damage percentages as well as sprout length . Tubers of Diamant cv were of significant lower values also those were of  higher carbohydrate , starch , non reducing sugars and total phenols content . 2 – The most superior storage treatments which completely (100%) suppressed sprouting and damage incidence and greatly reduced weight loss percentage were of mint oil and anise + mint oils . 3 – Treated tubers of both cvs with all essential oils / ambient temperature storage and those that kept on cold (4^oC) were significantly maintained better storability and greatly preserved their bioconstituents compared with untreated ones . The most superior ones , which completely (100 %) suppressed sprouting and damage percentage and greatly reduced weight loss percentage , were mint oil and anise + mint oil treated tubers of both cvs (with no significant differences among them ) . Also , 4^oC stored tubers and fennel oil treated tubers of Diamant were the following superior treatments .