Lin spent three years to improve the quality of the soil he uses, continually experimenting, until he finally discovered that cow dung mixed with rice husks and coconut husks, after half a year of composting, gave him the most balanced nutrient composition, and his germination rate rose from 50 % to 90 %.
林應樹花了 3 年時間改良介質、不斷實驗，最後發現以牛糞混入稻殼、椰殼，經過半年發酵後的介質，營養成分最均衡，種子發芽率也從 5 成提高到 9 成。