A pot experiment was conducted during 2012 and 2013 seasons in the Experimental Field of the Medicinal and Aromatic Plants Department at Dokky, Giza, to investigate the effect of aqueous extracts of powdered dried henna ( Lawsonia inermis) and camphor (Eucalyptus camaldulensis) leaves separately on Lavender ( Lavandula dentata) root rot disease, vegetative growth, volatile oil percentage, volatile oil component analysis (GLC). The results were summarized as follow: in all cuts in the two seasons, treatment inoculated with the tested fungus alone all plants died (control). The plants sprayed with Lawsonia inermis aqueous extract at high concentration (100g/L) had a highest significant antimicrobial activity against root rot disease, Lawsonia inermis aqueous extract showed good inhibitory effect against the tested fungus. As for vegetative growth and volatile oil percentage the application of Lawsonia inermis aqueous extract at (100g/L) significantly increased plant height, number of branches , herb fresh and dry weights and volatile oil percentage in most cases in both seasons. Followed by the application of Eucalyptus camaldulensis aqueous extract at (100g/L). The lowest values were recorded when the plants were treated with Eucalyptus camaldulensis aqueous extract at (50g/L) in the first and second seasons. Regarding GLC analysis, the highest percentage of 1,8-Cineol (the main component of the volatile oil) was produced with Lawsonia inermis aqueous extract at (100g/L).