This study aims to explore marketing factors affecting buying orchid decision of consumers in the Northern Part of Thailand, namely, from Chiang Mai, Chiang Rai, Tak, and Pitsanulok. Data collection was done during October 1st 2016 to September 30th 2017. Samples were randomly selected by dividing to 120 samples from each province. Data analysis was frequency, and percentage and then translated into 5 levels starting from least agreed to most agreed. Results show that the majority of respondents were consumers with the age of 35-44 years old, female, self-employed, 20,001-30,000 baht per month income. In addition, they resides at home and married. Analyzing on there level of marketing mix factors; it is found that all four marketing mix, namely, place, price, products and promotion were in ‘strongly agreed’; they prefer sympodial orchids in the species of Monopodial. They normally make the purchase from orchid market near fresh market or at orchid market. They don’t have regular shops. The satisfactory level is high after they have made the purchase. The result of the study is in accordance with the previous studies by others.