NOVELTY - Tea tree Fertilizer comprises tea cake, biogas residue, sawdust, decomposing inoculant and is prepared by (a) adding the above-mentioned materials in reactor to obtain stack and carrying out high temperature fermentation by adding water; and (b) carrying out low temperature fermentation by mixing the stack obtained in step (a) with decomposing inoculant to obtain stack and fermenting the stack by adding water to obtain product.    USE - As tea tree organic fertilizer for reducing soil-borne diseases and morbidity, conditioning soil, activating beneficial microorganisms in soil and enhancing symbiotic relationship between each other, increasing air permeability, reducing water loss and evaporation rate, and improving soil fertility and porosity.    ADVANTAGE - The fertilizer is non-toxic, and hence is environmentally-friendly and safe to human and livestock.    DETAILED DESCRIPTION - Tea tree fertilizer comprises 60-70 pts. wt. tea cake, 20-30 pts. wt. biogas residue, 10-15 pts. wt. sawdust, 0.2-0.5 pts. wt. decomposing inoculant and is prepared by (a) adding 20-30 pts. wt. biogas residue, 10-15 pts. wt. sawdust, 0.1-0.3 pts. wt. decomposing inoculant and 60-70 pts. wt. tea cake in a reactor having 3-10 m length and 2-2.5 m width and stacking and carrying out high temperature fermentation of the above-mentioned materials in a fermentation reactor, where the height of stack is 1-1.5 m, the stack has 50-60% moisture content, fermentation is performed at 55-70 degrees C for 7-10 days by adding water, and the stack is turned when temperature is more than 70 degrees C; and (b) carrying out low temperature fermentation after high temperature fermentation by mixing the stack obtained from step (a) with 0.1-0.2 pts. wt. decomposing inoculant, where the stack has 45-55% moisture content, and fermenting the stack at 50 degrees C for 10-20 days by adding water, where the stack is turned when temperature is less than 50 degrees C to obtain product having 30% moisture content.