The undertaken research examines the impact of green attitude, green customer value (e.g., environmental image and perceived value), and green marketing mix (e.g., product, packaging, price, promotion, and place) on green purchasing intention. The research has integrated fundamental theoretical approaches of customers’ purchasing such as attitude-behavior context (ABC) theory, signaling theory, and theory of planned behavior (TPB) in the modified conceptual framework. Additionally, this research has also incorporated the green psychological benefits (e.g., nature experience, self-expressive, and warm glow) as mediating construct. The modified conceptual framework also unified green marketing (e.g., environmental advertising and green word of mouth) as moderator to investigate further the connotation between attitude, green customer value, green marketing mix, and green purchase intention. The survey method is used to collect data with a sample size of 896 customers that are well-versed with eco-friendly green products and services from the different urban centers of the USA. The data is analyzed through a structural equation modeling (SEM)–based multivariate approach by using SPSS 26, AMOS 26, and conditional process modeling software. The findings have demonstrated a positive and significant impact of green customer value, green marketing mix, and attitude on the green purchase intention of US customers. The study has further concluded that the green psychological benefits (mediator) and green advertising (moderator) have a significant influence on a relationship between attitude, green customer value (environmental image and perceived value), green marketing mix, and green purchasing intention. The results of this research can be helpful for researchers and academicians to get insight into theoretical approaches to green purchasing, and it can also be helpful for marketers to devise green marketing strategies to gain optimal competitive advantage in the long run.