This paper is to design and discuss on homogenous atmospheric cold plasma streaming by utilizing the combination of corona gas discharge on sharp edge electrode, and dielectric barrier discharge (DBD) technique. To elucidate on the cold plasma-mediated surface modification of organic cells or biomaterials. And demonstrate that the non-aggressive cold plasma can apply on organic materials without causing thermal and electrical damages. Using the needle tip with a small radius of curvature, this work utilized the twin tips with the sharp edge that can concentrate electric field around the edge of tips, allowing micro-discharge plasma at low power consumption (about 4.8 W). Finite element simulation is used to elucidate on fringe field developed at the sharp edge of tips, showing a high electric field (about 5x104) giving energetic electrons producing the plasma. Our design structure shows a uniform atmospheric-air cold plasma up to hundreds of square centimeters which is suitable for large-scale surface treatment applications for agriculture products and other organic materials. Specifically, the transformation of the hydrophobic to the hydrophilic surface of sunflower seeds. The water uptake was also performed by using water droplet to observe the rate of imbibition of the treated and untreated samples. The result shows significant improvement of seed’s water absorption, and the decreasing of contact angle about 70% right after the plasma operation, indicating that the plasma treatment has a great potential to enhance the growth of agriculture products, and the wettability of the materials. Besides, the temperature of processed organic materials was measured during plasma operation and found to be close to the room temperature and the designed large-scale atmospheric cold plasmas also provide by-product formation such as ozone (O3) and our cold plasma becomes an alternative method of surface treatment for the organic and biomaterials.