Field experiment was performed during the 2004-2005 and 2005-2006 seasons at the Floriculture Nursery, Experimental Farm, Faculty of Agriculture, Assiut University to investigate the effects of plant spacing (15 and 30cm) and various fertilizer treatments; cattle manure (15m3/feddan), NPK fertilization [ammonium nitrate (33.5% N) 60, calcium superphosphate (15.5%P2O5) 45, and potassium sulphate(48%K2O) 48kg/feddan] and bio-fertilizers [Biogen (500g) and phosphorein (300g/Kg seeds) were added either individually or in combination].A complete randomized block design in a split-plot arrangement with four replicates was used in this experiment. Plant spacing was randomly distributed in the main plots and fertilizer treatments in the sub plots.Data obtained showed that significant increases were found in branch number, seed production, yields of volatile and fixed oil in seeds in relation to plant spacing of 30cm comparison to that of 15 cm. Moreover, leaf contents of carbohydrates, nitrogen, phos