This systematic review research has two objectives: (a) to identify Green Marketing (GM) practices related to the key variables of consumer purchasing behavior, and (b) to present a model for the generation of sustainable value by companies based on the results found. The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) statement process was followed and Scopus and Web of Science (WoS) sources were used for the document search. A total of 248 documents were found (Scopus = 110; WoS = 138), and the final selection was 34 papers. The GM practices found were placed in five categories: (a) Green products and services; (b) Green business image; (c) Green advertising; (d) Green purchasing experience; (e) Green marketing mix. The key variables of purchasing behavior that were found are: Environmental awareness, Green satisfaction, Green attitude, Green purchasing intention, Green purchasing preference, Word of mouth, Perceived value, Green experiential value, Responsible consumption, Green engagement, Green trust, Green loyalty, and Green purchasing decision. Finally, a sustainable value generation model called “Green consumption cycle for sustainable value” was presented.