A chi-square test was performed in terms of MBTI personality types and horticultural preferences, where the MBTI personality types were obtained from the predicted results from the typical expressions of the Korean Psychological Testing Institute’s self-speculation MBTI preference indicator. The analysis results were organized into two types: intuition type and sensing type. The results suggest that the intuition type preferred the herbs with fragrances, while the sensing type showed their preference towards flowering plants. Also, there were significant differences between the intuitive and sensing types with respect to ‘five senses that are the most stimulating in the horticultural process’, ‘plant characteristics’ and ‘interesting horticultural activities’, which imply that different types have different choices. In the comparison between thinking type and feeling type, the thinking type showed their interest in the overall shape of the plant, while the feeling type showed their first interest in the flowers of the plants. The result showed that thinking type and feeling type had a significant difference in terms of ‘degree of preferences in horticultural activities’, ‘initially interested plant tissues’, ‘five senses that are the most stimulating in the horticultural process’ and ‘effects of horticultural activities’. Regarding the judging type and perceiving type in their choices of plant characteristics, the judging type preferred flower plants, while perceiving type preferred herbs with fragrances. The results of self-speculation MBTI personality test showed significant differences according to the personality types, regarding the most interested plant tissue and plant characteristics, which leads to a difference in their choices.