Plants are an important element of landscape architecture. The ability of plant landscape planning and design is the core ability for landscape architecture major. As an important starting point to cultivate this comprehensive ability, it is very important to improve the teaching and learning quality of planting design course. Based on the spatial color organization method proposed in the previous stage, this paper optimized a set of complete plant landscape planning and design procedures, including prophase analysis, planting scheme planning, planting layout planning, spatial color organization method application and planting design, and illustrated the procedures step-by-step through the planting redesign of Guangzhou children’s park as a case. We focus on the selection of the key and non-key design areas and plant landscape points, lines and planes in the planting layout planning diagram, and the planting design process of plant landscape points, lines and planes based on the spatial color organization method, so that students can fully understand the whole process including planting layout, spatial organization and sight analysis, plant organization and species selection in red, yellow and blue layers, and planting design. The optimized planning and design procedure enabled students to effectively understand and master the complete logic system and operation steps of plant landscape planning and design, thus building a bridge between theoretical cognition and practical application, and effectively improving the teaching quality of the planting design course. We believe that this set of optimization procedure for plant landscape planning and design based on the spatial color organization method of plants has strong advantages not only in students’ understanding, mastery and application, but also in teachers’ teaching, demonstration and evaluation, which is worthy of promotion and application in the planting design teaching of landscape architecture at home and abroad.